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  1. Senat 20240517 4 Ni 49/22 (EP), 4 Ni 53/22 (EP) Urteil DEU Bundesrepublik Deutschland In der Patentnichtigkeitssache … betreffend das europäische Patent 2 940 685 (DE 60 2013 070 229) hat der
  2. Senat (Nichtigkeitssenat) des Bundespatentgerichts auf die mündliche Verhandlung vom
  3. Januar 2024durch die Richterin Werner M. A. als Vorsitzende und die Richter Schwarz, Dipl.-Ing. Altvater,Dipl.-Ing. Matter undDipl.-Phys. Univ. Dr. Haupt I. Das europäische Patent 2 940 685 wird mit Wirkung für das Hoheitsgebiet der Bundesrepublik Deutschland für nichtig erklärt. II. Die Beklagte trägt die Kosten des Rechtsstreits. III. Das Urteil ist gegen Sicherheitsleistung in Höhe von 120 % des jeweils zu vollstreckenden Betrages vorläufig vollstreckbar. 1 Die Beklagte ist eingetragene Inhaberin des auch mit Wirkung für das Hoheitsgebiet der Bundesrepublik Deutschland in englischer Sprache erteilten Europäischen Patents 2 940 685(Streitpatent), das unter Inanspruchnahme der Priorität der chinesischen Anmeldung CN 201310034240 vom
  4. Januar 2013 am
  5. Juli 2013 als PCT/CN2013/079883 international angemeldet worden ist. Die Anmeldung ist am
  6. August 2014 als WO 2014/117484 A1 und die Erteilung des Streitpatents am
  7. Juni 2020als EP 2 940 685 B1 veröffentlicht worden. 2 Das Deutsche Patent- und Markenamt führt das Streitpatent unter dem Aktenzeichen 60 2013 070 229.2.Es trägt die Bezeichnung 3 „PREDICTION METHOD AND DECODING DEVICE FOR BAND WIDTH EXPANSION BAND SIGNAL” 4 und in der deutschen Übersetzung: 5 „Vorhersageverfahren und Decodierungsvorrichtung für ein 6 Bandbreitenerweiterungs-Bandsignal“. 7 Das Patent umfasst in der erteilten Fassung zehn Patentansprüche, die die Klägerin zu 1 mit ihrer Nichtigkeitsklage vom
  8. April 2022 im Umfang der Patentansprüche 1, 3, 4, 5 (zweite Alternative), 6, 8, 9 und 10 (zweite Alternative) und die Klägerin zu 2 mit ihrer Nichtigkeitsklage vom
  9. Mai 2022 in vollem Umfang angreift. 8 Der das Verfahren zur Vorhersage eines Bandbreiterweiterungs-Frequenzbandsignals betreffende unabhängige Patentanspruch 1 und der die Dekodiervorrichtung betreffende unabhängige Patentanspruch 6 lauten in der erteilten Fassung in der Verfahrenssprache Englisch laut Streitpatentschrift: 9
  10. A method for predicting a bandwidth extension frequency band signal, comprising: 10 demultiplexing

(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal; 11 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; 12 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 13 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highestfrequency bin to which a bit is allocated whenthe highest frequency bin to which a bit is allocated is no less than the preset start frequencybin of the bandwidth extension frequency band; 14 and 15 predicting
(104)the bandwidth extension frequency band signal according to the predictedexcitation signal of the bandwidth extension frequency band and a frequency envelope of thebandwidth extension frequency band; 16 wherein the predicting an excitation signal of the bandwidth extension frequency band accordingto an excitation signal within a predeterminedfrequency band range of the frequency domainsignal and the preset start frequency bin of thebandwidth extension frequency band comprises: 17 making n copies of the excitation signalwithin the predetermined frequency bandrange of the frequency domain signal, andusing the n copies of the excitation signalas an excitation signal between the presetstart frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequencyband, wherein n is an integer or a non-integer greater than 0, and n is equal to a ratioof a quantity of frequency bins between thepreset start frequency bin of the bandwidthextension frequency band and the highestfrequency bin of the bandwidth extensionfrequency band to a quantity of frequencybins within the predetermined frequencyband range of the frequency domain signal; 18 where n is an integer or a non-integer greater than 0; and 19 wherein the predicting the excitation signalof the bandwidth extension frequency bandaccording to the excitation signal within thepredetermined frequency band range of thefrequency domain signal, the preset startfrequency bin of the bandwidth extensionfrequency band, and the highest frequencybin, to which a bit is allocated comprises: 20 making a copy of an excitation signal fromthe mth frequency bin fexc_start+ above astart frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency binfexc_end of the predetermined frequencyband range of the frequency domain signaland n copies of the excitation signal withinthe predetermined frequency band range ofthe frequency domain signal, and using thetwo parts of excitation signals as an excitation signal between the highest frequencybin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, wherein n is 0 or an integeror a non-integer greater than 0, m is a positive integer, and m is equal to a value of aquantity of frequency bins between thehighest frequency bin to which a bit is allocated and the preset start frequency bin ofthe bandwidth extension frequency band. 21 6. A decoding device, comprising: 22 a decoding module
(30), configured to: demul-tiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal; 23 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; 24 a first processing module
(32), configured to: 25 when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 26 a second processing module
(33), configured to: 27 when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 28 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 29 wherein the first processing module
(32)is specifically configured to: make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, wherein n is aninteger or a non-integer greater than 0, and n isequal to a ratio of a quantity of frequency binsbetween the preset start frequency bin of thebandwidth extension frequency band and thehighest frequency bin of the bandwidth extension frequency band to a quantity of frequencybins within the predetermined frequency bandrange of the frequency domain signal; where nis an integer or a non-integer greater than 0; andwherein the second processing module
(33)isspecifically configured to: make a copy of an excitation signal fromthe mth frequencybinfexc_start+ above a start frequency bin fexc_startofthe predetermined frequency band range of thefrequency domain signal to an end frequencybin fexc_end ofthe predeterminedfrequencyband range of the frequency domain signal andn copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and use the two parts ofexcitation signals as an excitation signal between the highest frequency bin, to which a bitis allocated, of the frequency domain signal andthe highest frequency bin of the bandwidth extension frequency band, wherein n is 0 or aninteger or a non-integer greater than 0, m is apositive integer, and m is equal to a value of aquantity of frequency bins between the highestfrequency bin to which a bit is allocated and thepreset start frequency bin of the bandwidth extension frequency band. 30 In deutscher Übersetzung gemäß Streitpatentschrift: 31 1. Verfahren zur Vorhersage eines Bandbreitenerweiterungs-Frequenzbandsignals, umfassend: 32 Entmultiplexen
(100)eines empfangenen Bitstroms und Dekodieren des entmultiplexten Bitstroms, um ein Frequenzdomänensignal zu erhalten; 33 Bestimmen
(101), ob ein höchstes Frequenzbin, dem ein Bit zugeordnet ist, des Frequenzdomänensignals kleiner ist als ein voreingestelltes Anfangs-Frequenzbin eines Bandbreitenerweiterungs-Frequenzbandes; 34 Vorhersagen
(102)eines Erregungssignals des Bandbreitenerweiterungs-Frequenzbandes gemäß einem Erregungssignal in einem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals und dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes, wenn das höchste Frequenzbin, dem ein Bit zugeordnet ist, kleiner ist als das voreingestellte Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes; 35 Vorhersagen
(103)des Erregungssignals des Bandbreitenerweiterungs-Frequenzbandes gemäß einem Erregungssignal in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals, dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes und dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, wenn das höchste Frequenzbin, dem ein Bit zugeordnet ist, nicht kleiner ist als das voreingestellte Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes; und 36 Vorhersagen
(104)des Bandbreitenerweiterungs-Frequenzbandsignals gemäß dem vorhergesagten Erregungssignal des Bandbreitenerweiterungs-Frequenzbandes und einer Frequenzhüllkurve des Bandbreitenerweiterungs-Frequenzbandes; 37 wobei das Vorhersagen eines Erregungssignals des Bandbreitenerweiterungs-Frequenzban-des gemäß einem Erregungssignal in einem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals und dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes umfasst: 38 Erzeugen von n Kopien des Erregungssignals in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals und Verwenden der n Kopien des Erregungssignals als Erregungssignal zwischen dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzban-des und einem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes, wobei n eine ganze Zahl oder eine nicht ganze Zahl größer als 0 ist und n gleich einem Verhältnis einer Menge von Frequenzbins zwischen dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes und dem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes zu einer Menge von Frequenzbins in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals ist; wobei n eine ganze Zahl odereine nicht ganze Zahl größer als 0 ist; und wobei das Vorhersagen des Erregungssignals des Bandbreitenerweiterungs-Frequenzbandes gemäß dem Erregungssignal in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals, dem voreingestellten Anfangs-Frequenzbin desBandbreitenerweiterungs-Frequenzbandes und dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, umfasst: 39 Erzeugen einer Kopie des Erregungssignals von dem m-ten Frequenzbin fexc_start+über einem Anfangs-Frequenzbin fexc_startdes vorbestimmten Frequenzbandbereichs des Frequenzdomänensignals bis zu einemEnd-Frequenzbin fexc_end des vorbestimmten Frequenzbandbereichs des Frequenzdomänensignals und n Kopien des Erregungssignals in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals und Verwenden der beiden Teile der Erregungssignale als Erregungssignal zwischen dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, des Frequenzdomänensignals und dem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes, wobei n 0 oder eine ganze Zahl oder eine nicht ganze Zahl größerals 0 ist, m eine positive ganze Zahl ist und dem gleich einem Wert einer Menge von Frequenzbins zwischen dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, und dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes ist. 40 6. Dekodiervorrichtung, umfassend: 41 ein Dekodiermodul
(30), das dafür ausgelegt ist: 42 einen empfangenen Bitstrom zu entmultiplexenund den entmultiplexten Bitstrom zu dekodieren, um ein Frequenzdomänensignal zu erhalten; 43 ein Bestimmungsmodul
(31), das dafür ausgelegt ist zu bestimmen, ob ein höchstes Frequenzbin, dem ein Bit zugeordnet ist, des Frequenzdomänensignals kleiner ist als ein voreingestelltes Anfangs-Frequenzbin eines Bandbreitenerweiterungs-Frequenzbandes; 44 ein erstes Verarbeitungsmodul
(32), das ausgelegt ist zum: wenn das Bestimmungsmodul
(31)bestimmt, dass das höchste Frequenzbin, dem ein Bit zugeordnet ist, kleiner als das voreingestellte Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes ist, Vorhersagen eines Erregungssignals des Bandbreitenerweiterungs-Frequenzbandes gemäß einem Erregungssignal in einem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals und dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes; 45 ein zweites Verarbeitungsmodul
(33), das ausgelegt ist zum: wenn das Bestimmungsmodul
(31)bestimmt, dass das höchste Frequenzbin, dem ein Bit zugeordnet ist, größer oder gleich dem voreingestellten Anfangs-Frequenzbin desBandbreitenerweiterungs-Frequenzbandes ist, Vorhersagen des Erregungssignals des Bandbreitenerweiterungs-Frequenzbandes gemäß dem Erregungssignal in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals, dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes und dem höchsten Frequenzbin, dem ein Bit zugeordnet ist; und 46 ein Vorhersagemodul
(34), das dafür ausgelegt ist, ein Bandbreitenerweiterungs-Frequenzbandsignal gemäß dem vorhergesagten Erregungssignal des Bandbreitenerweiterungs-Frequenzbandes und einer Frequenzhüllkurve desBandbreitenerweiterungs-Frequenzbandesvorherzusagen; 47 wobei das erste Verarbeitungsmodul
(32)speziell ausgelegt ist zum: Erzeugen von Kopien des Erregungssignals in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals und Verwenden der n Kopien des Erregungssignals als Erregungssignal zwischen dem voreingestellten Anfangs-Frequenzbin desBandbreitenerweiterungs-Frequenzbandes und einem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes, wobei n eine ganze Zahl oder eine nicht ganze Zahl größer als 0 ist und n gleich einem Verhältnis einer Menge von Frequenzbins zwischen dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes und dem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes zu einer Menge von Frequenzbins in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignals ist; wobei n eine ganze Zahl oder eine nicht ganze Zahl größer als 0 ist; und 48 wobei das zweite Verarbeitungsmodul
(33)speziell ausgelegt ist zum: Erzeugen einer Kopie des Erregungssignals von dem m-ten Frequenzbin fexc_start+ über einem Anfangs-Frequenzbin fexc_start des vorbestimmten Frequenzbandbereichs des Frequenzdomänensignals bis zu einem End-Frequenzbin fexc_end des vorbestimmten Frequenzbandbereichs des Frequenzdomänensignals und n Kopien des Erregungssignals in dem vorbestimmten Frequenzbandbereich des Frequenzdomänensignalsund Verwenden der beiden Teile von Erregungssignalen als Erregungssignal zwischen dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, des Frequenzdomänensignals und dem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes, wobei n 0 oder eine ganze Zahl oder eine nicht ganze Zahl größer als 0 ist, m eine positive ganze Zahl ist und m-gleich einem Wert einer Menge von Frequenzbins zwischen dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, und dem voreingestelltenAnfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes ist. 49 Die Patentansprüche 2 bis 5 sind unmittelbar oder mittelbar auf Patentanspruch 1 und die Patentansprüche 7 bis 10 sind unmittelbar oder mittelbar auf Patentanspruch 6 rückbezogen; wegen ihres Wortlauts wird auf die Akte verwiesen. 50 Die Klägerinnen sind der Ansicht, der jeweilige Gegenstand gemäß den Patentansprüchen 1 und 6 sei nicht patentfähig. 51 Die Klägerinnen stützen ihr Vorbringen u. a. auf folgende Dokumente: 52 CHAN MFG10 YAO, S.; CHAN, Ch.-F.: Block-based speech bandwidth extension system with separated envelope energy ratio estimation. In: 13th European Signal Processing Conference, 2005 September 4-8, Antalya, Turkey. January 2008, 4 Seiten CN‘072 MFG16 CN 101471072 B mit englischer Übersetzung als Anlage MFG16a CN‘664 MFG17 CN 101853664 A mit englischer Übersetzung als Anlage MFG17a DEN BRINKER MFG20 / NK10 DEN BRINKER, A. C. et. al.: An Overview of the Coding Standard MPEG-4 Audio Amendments 1 and 2: HE-AAC, SSC, and HE-AAC v
  1. In: EURASIP Journal on Audio, Speech, and Music Processing 2009, Published on: 3 June 2009, S. 1 - 21 DIETZ MFG9 DIETZ, M. et. al.: Spectral Band Replication, a novel approach in audio coding. In: Audio Engineering Society Convention Paper 5553, Presented at the 112th Convention, 2002 May 10-13, Munich. S. 1 - 8 GAO NK3 US 2012/0016667 A1 … MFG25 Technisches Gutachten zu EP 2 940 685 B1,
  2. Januar 2024, … HOEG NK8 Hoeg, W.; Lauterbach, Th.: Digital Audio Broadcasting, Principles and Applications of DAB, DAB+ and DMB, Third Edition, John Wiley and Sons, Ltd., Copyright 2009, ISBN 978-0-470-51037-7, S. v – xi, 107 - 109 KIM MFG12 / NK1 Kim, M.et. al.: High-quality scalable audio codec. In: Proceedings of SPIE, Vol. 6777, 67770E, 10 September 2007, Seiten 67770E-1 – 67770E-11 KORNAGEL MFG7 / NK6 KORNAGEL, U.: Spectral Widening of the Excitation Signal for Telephone-Band Speech Enhancement. In: 7th International Workshop on Acoustic Echo and Noise control, Darmstadt University of Technology, 10.-
  3. September 2001, Proceedings, S. 215-218 LARSEN NK5 Larsen, E.; Aarts, R. M.: Audio Bandwidth Extension. Applications of Psychoacoustics, Signal Processing and Loudspeaker Design. John Wiley & Sons, Ltd., Copyright
  4. ISBN 0-470-85864-8, S. v – xxiii, 1 – 287 LIU MFG14 Liu, Ch.-M. et. al.: Compression Artifacts in Perceptual Audio Coding. In: IEEE Transactions on Audio, Speech, and Language Processing, Vol. 16, No. 4, Mai 2008, S. 681 - 695 MELTZER MFG21 / NK13 MELTZER, S.; MOSER, G.: MPEG-4 HE-AAC v2 – audio coding for today’s digital media world. In: EBU Technical Review – Januar 2006, S. 1 - 12 MPEG-4 MFG8/ NK2 International Standard ISO/IEC 14496-3 Fourth edition 2009-09-1: Information technology – Coding of audio-visual objects – Part 3: Audio. Reference number ISO/IEC 14496-3:2009(E). 1416 Seiten NAGEL NK11 NAGEL, F.; DISCH, S.: A Harmonic Bandwidth Extension Method for Audio Codecs. In: IEEE ICASSP 2009, S. 145 - 148 NEUENDORF MFG11 WO 2012/126893 A1 NK2b Erläuterungen der Klägerin zu 2 zum MPEG-4 Standard, eine Seite NK2c Erläuterungen der Klägerin zu 2 zum MPEG-4 Standard, zwei Seiten NK2d Fraunhofer FDK AAC Codec Library for Android, Copyright 1995 – 2012 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V., Fraunhofer Institute for Integrated Circuits IIS, acht Seiten NK2e Erläuterungen der Klägerin zu 2 zum MPEG-4 Standard: Bestimmung von bs_start_freq in der Fraunhofer-Implementierung des MPEG-4-SBR-Encoderes, fünf Seiten RAMABADRAN NK4 WO 2010/091013 A1 SAMSUNG HLNK10 KR 10-2004-0086879 mit englischsprachiger Übersetzung als Anlage HLNK10a SAMSUNG_1 MFG22 WO 2012/036487 A2 SENG NK7 SENG, Ch. K. et. al.: Low Power Spectral Band Replication Technology for the MPEG-4 Audio Standard. In: IEEE ICICS-PCM 2003, 15-18 December 2003, Singapore, S. 1408 - 1412 TALEB HLNK9 US 2010/0241437 A1 TANG MFG15 Tang, Sh.-H.: Efficient Design of Time/Frequency Grid in HE-AAC Encoder. Masterarbeit, Juni 2006, Institute of Computer Science and Information Engineering National Chiao Tung University, S. i – ix, 1 - 65 TSUJINO MFG24 TSUJINO, K.; KIKUIRI, K.: Low-Complexity Bandwidth Extension in MDCT Domain for Low-Bitrate Speech Coding. ICASSP 2009, S. 4145 - 4148 VARY MFG23 VARY, P.; MARTIN, R.: Digital Speech Transmission. Enhancement, Coding and Error Concealment, John Wiley & Sons, Ltd., England.
  5. ISBN 0-471-56018-9, S. v – xvi, 73 - 117 VOLBERT HLNK13 Volbert, K.: Grundlagen der Informatik – Einführung in Berechenbarkeit und Komplexität, Hochschule für angewandte Wissenschaften Fakultät Informatik und Mathematik, Wintersemester 2010/11, Regensburg, 12./
  6. Januar 2011, 14 Seiten Wolters NK9 Wolters, M. et. al.: A closer look into MPEG-4 High Efficiency AAC. In: Audio Engineering Society, Convention Paper 5871, Presented at the 115th Convention, 2003 October 10-13, New York, NY, USA, S. 1 – 16 53 Die Klägerinnen sind der Ansicht, die Gegenstände nach den Ansprüchen 1 und 6 seien bereits nicht neu, insbesondere aus dem MPEG-4 – Standard, DEN BRINKER, KORNAGEL, KIM, TALEB und SAMSUNG bekannt. Zumindest beruhten die Gegenstände nach den Ansprüchen 1 und 6 nicht auf einer erfinderischen Tätigkeit gegenüber dem verfahrensgegenständlichen Stand der Technik. 54 Die Klägerin zu 1 beantragt, 55 das europäische Patent 2 940 685 mit Wirkung für das Hoheitsgebiet der Bundesrepublik Deutschland im Umfang der Patentansprüche 1, 3, 4, 5 (zweite Alternative), 6, 8, 9 und 10 (zweite Alternative) für nichtig zu erklären. 56 Die Klägerin zu 2 beantragt, 57 das europäische Patent 2 940 685 mit Wirkung für das Hoheitsgebiet der Bundesrepublik Deutschland in vollem Umfang für nichtig zu erklären. 58 Die Beklagte beantragt, 59 die Klagen abzuweisen, 60 hilfsweise, die Klagen abzuweisen, 61 soweit sie sich auch gegen eine der Fassungen des Streitpatents nach den Hilfsanträgen 62 Hilfsantrag 0, eingereicht mit Schriftsatz vom
  7. November 2023, 63 Hilfsanträgen 1 und 2, jeweils eingereicht mit den Widerspruchsbegründungen vom
  8. September 2022 (Verfahren 4 Ni 49/22 (EP)) bzw. vom
  9. Juli 2022 (Verfahren 4 Ni 53/22 (EP)), 64 Hilfsantrag 3.0, eingereicht mit Schriftsatz vom
  10. November 2023, 65 Hilfsantrag „Abhängig 1“, überreicht in der mündlichen Verhandlung am
  11. Januar 2024, 66 Hilfsantrag 3.0‘, überreicht in der mündlichen Verhandlung am
  12. Januar 2024, 67 Hilfsantrag 3.0‘‘, überreicht in der mündlichen Verhandlung am
  13. Januar 2024, 68 Hilfsantrag 3, eingereicht mit den Widerspruchsbegründungen vom
  14. September 2022 (Verfahren 4 Ni 49/22 (EP)) bzw. vom
  15. Juli 2022 (Verfahren 4 Ni 53/22 (EP)) 69 Hilfsantrag 3a vom
  16. Februar 2023, 70 Hilfsanträgen 4 und 5, jeweils eingereicht mit den Widerspruchsbegründungen vom
  17. September 2022 (Verfahren 4 Ni 49/22 (EP)) bzw. vom
  18. Juli 2022 (Verfahren 4 Ni 53/22 (EP)), sowie 71 Hilfsantrag „Abhängig 2“, überreicht in der mündlichen Verhandlung am
  19. Januar 2024, 72 und zwar in dieser angegebenen Reihenfolge, richten, mit der Maßgabe, dass die Hilfsanträge jeweils als geschlossener Anspruchssatz gestellt werden. 73 Die Beklagte tritt der Argumentation der Klägerinnen entgegen und ist der Auffassung, der Gegenstand des Streitpatents nach den Patentansprüchen 1 und 6 sei gegenüber dem Stand der Technik neu und beruhe auch auf einer erfinderischen Tätigkeit. Der Gegenstand des Streitpatents im angegriffenen Umfang sei wenigstens in einer der verteidigten Fassungen nach den eingereichten Hilfsanträgen schutzfähig. 74 Zur Stützung ihrer Argumentation verweist die Beklagte u. a. auf die folgenden Dokumente: 75 Kopiervorgang NB6 Grafische Darstellung zur Erläuterung der Erfindung BESSETTE NB10 Bessette, B. et. al.: The Adaptive Multirate Wideband Speech Codec (AMR-WB). In: IEEE Transactions on Speech and Audio Processing, Vol. 10, No. 8, November 2002, S. 620 - 636 … NB11 Gutachterliche Stellungnahme zum Europäischen Patent EP 2 940 685 B1,… 76 Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 0 lauten (Änderungsfassung): 77
  20. A method for predicting in a decoding device a bandwidth extension frequency band signal, comprising: 78 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal; 79 pre-setting a start frequency bin of a bandwidth extension frequency band by the decoding device; 80 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 81 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 82 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bit to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 83 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 84 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 85 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 86 using the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 87 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 88 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 89 making a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 90 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 91 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 92 6. A decoding device, comprising: 93 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal; 94 wherein the decoding device is configured to pre-set a start frequency bin of a bandwidth extension frequency band; 95 the decoding device further comprising: 96 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 97 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 98 a second processing module
(33), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 99 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 100 wherein the first processing module
(32)is specifically configured to: 101 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 102 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 103 wherein n is an integer or a non integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 104 wherein the second processing module
(33)is specifically configured to: 105 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 106 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band. 107 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 108 Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 1 lauten (Änderungsfassung): 109 1. A method for predicting in a decoding device a bandwidth extension frequency band signal, comprising: 110 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal; 111 pre setting a start frequency bin of a bandwidth extension frequency band and selecting a predetermined frequency band range of the frequency domain signal by the decoding device; 112 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 113 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a the predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 114 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bin to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 115 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 116 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 117 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 118 using the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 119 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 120 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 121 making a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 122 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 123 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 124 6. A decoding device, comprising: 125 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal; 126 wherein the decoding device is configured to pre-set a start frequency bin of a bandwidth extension frequency band and to select a predetermined frequency band range of the frequency domain signal; 127 the decoding device further comprising: 128 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 129 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a the predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 130 a second processing module
(33), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 131 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 132 wherein the first processing module
(32)is specifically configured to: 133 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 134 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 135 wherein n is an integer or a non integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 136 wherein the second processing module
(33)is specifically configured to: 137 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a Start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 138 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 139 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 140 Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 2 lauten (Änderungsfassung): 141 1. A method for predicting in a decoding device a bandwidth extension frequency band signal, comprising: 142 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal; 143 pre-setting a start frequency bin of a bandwidth extension frequency band depending on an encoding bit-rate and selecting a predetermined frequency band range of the frequency domain signal by the decoding device; 144 determining
(101)whether a highest frequency bin, to which a bin is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 145 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a the predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 146 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bin to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 147 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 148 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 149 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 150 using the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 151 wherein n is an integer or a non integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 152 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 153 making a copy of an excitation signal from the m th frequency bin fexc start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 154 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 155 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 156 6. A decoding device, comprising: 157 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal; 158 wherein the decoding device is configured to pre-set a start frequency bin of a bandwidth extension frequency band depending on an encoding bit-rate and to select a predetermined frequency band range of the frequency domain signal; 159 the decoding device further comprising: 160 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 161 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a the predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 162 a second processing module
(33), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated: and 163 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 164 wherein the first processing module
(32)is specifically configured to: 165 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal and 166 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 167 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 168 wherein the second processing module
(33)is specifically configured to: 169 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 170 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 171 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 172 Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 3.0 lauten (Änderungsfassung): 173 1. A method for predicting in a decoding device a bandwidth extension frequency band signal according to an encoding bit-rate and a signal type, comprising: 174 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal and a frequency envelope of a bandwidth extension frequency band; 175 pre-setting a start frequency bin of a bandwidth extension frequency band depending on the encoding; bit-rate by the decoding device; 176 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 177 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 178 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bin to which a bin is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 179 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a the frequency envelope of the bandwidth extension frequency band, wherein the frequency envelope of the bandwidth extension frequency band is acquired based on the signal type; 180 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 181 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 182 using the n copies of the excitation signal as an excitation signal between the preset Stan frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 183 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 184 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 185 making a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 186 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 187 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 188 6. A decoding device, comprising: 189 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal and a frequency envelope of a bandwidth extension frequency band; 190 wherein the decoding device is configured to pre-set a start frequency bin of a bandwidth extension frequency band depending on an encoding bit-rate; 191 the decoding device further comprising: 192 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 193 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 194 a second processing module
(33), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 195 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a the frequency envelope of the bandwidth extension frequency band, 196 wherein the frequency envelope of the bandwidth extension frequency band is acquired by an acquiring module
(35)based on a signal type; 197 wherein the first processing module
(32)is specifically configured to: 198 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 199 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 200 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 201 wherein the second processing module
(33)is specifically configured to: 202 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 203 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 204 wherein n 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 205 Mit Hilfsantrag „Abhängig 1“ verteidigt die Beklagte ausschließlich die Patentansprüche 4 und 5 sowie 9 und 10 nach erteilter Fassung. 206 Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 3.0‘ lauten (Änderungsfassung): 207 1. A method for presiding in a decoding device a bandwidth extension frequency band signal according to an encoding bit-rate and a signal type, comprising: 208 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal, a signal type, and a frequency envelope or a bandwidth extension frequency band; 209 pre-setting a start frequency bin of, a bandwidth extension frequency band depending on the encoding bit-rate by the decoding device; 210 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 211 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 212 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bin to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 213 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a the frequency envelope of the bandwidth extension frequency band, wherein the frequency envelope of the bandwidth extension frequency band is acquired based on the signal type; 214 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range or the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 215 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal and 216 using the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 217 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 218 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 219 making a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 220 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 221 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 222 6. A decoding device, comprising: 223 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal, a signal type, and a frequency envelope of a bandwidth extension frequency band; 224 wherein the decoding device is configured to pre-set start frequency bin of a bandwidth extension frequency band depending on an encoding bit-rate; 225 the decoding device further comprising: 226 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 227 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 228 a second processing module
(33), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 229 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a the frequency envelope of the bandwidth extension frequency band, 230 wherein the frequency envelope of the bandwidth extension frequency band is acquired by an acquiring module
(35)based on a signal type: 231 wherein the first processing module
(32)is specifically configured to: 232 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 233 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 234 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 235 wherein the second processing module
(33)is specifically configured to: 236 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 237 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 238 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 239 In Hilfsantrag 3.0‘‘ ändert die Beklagte gegenüber Hilfsantrag 3.0‘ lediglich die unbestimmten Artikel in Zeile 4 von Patentanspruch 1 in der Ergänzung „obtain a frequency domain signal, a signal type, and a frequency envelope of a bandwidth extension frequency band;“ bzw. in Patentanspruch 6 in dem Einschub „wherein the frequency envelope of the bandwidth extension frequency band is acquired by an acquiring module
(35)based on a signal type“ in bestimmte Artikel „… the signal type …“. 240 Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 3 lauten (Änderungsfassung): 241 1. A method for predicting in a decoding device a bandwidth extension frequency band signal according to an encoding bit-rate and a signal type, comprising: 242 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal; 243 pre-setting a start frequency bin a bandwidth extension frequency band depending on the encoding bit-rate and selecting a predetermined frequency band range of the frequency domain signal by the decoding device; 244 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 245 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a the predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 246 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bin to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 247 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band, wherein the frequency envelope of the bandwidth extension frequency band is acquired based on the signal type; 248 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 249 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 250 using the n copies of thie excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 251 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 252 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 253 making a copy of an excitation signal from the m the frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal and 254 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 255 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 256 6. A decoding device, comprising: 257 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal; 258 wherein the decoding device is configured to pre-set a start frequency bin of a bandwidth extension frequency band depending on an encoding bit-rate and to select a predetermined frequency band range of the frequency domain signal; 259 the decoding device further comprising: 260 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 261 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a the predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 262 a second processing module
(33), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 263 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band, 264 wherein the frequency envelope of the bandwidth extension frequency band is acquired by an acquiring module
(35)based on a signal type; 265 wherein the first processing module
(32)is specifically configured to: 266 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 267 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 268 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 269 wherein the second processing module
(33)is specifically configured to: 270 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 271 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 272 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 273 Die Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 3a lauten (Änderungsfassung): 274 1. A method for predicting in a decoding device a bandwidth extension frequency band signal according to an encoding bit-rate and a signal type, comprising: 275 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal and a frequency envelope of a bandwidth extension frequency band; 276 pre-setting a start frequency bin of a bandwidth extension frequency band depending on the encoding bit-rate and selecting a predetermined frequency band range of the frequency domain signal by the decoding device; 277 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 278 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a the predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 279 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bin to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 280 predicting
(104)the bandwidth extension frequency bond signal according to the predicted excitation signal of the bandwidth extension frequency band and a the frequency envelope of the bandwidth extension frequency band, wherein the frequency envelope of the bandwidth extension frequency band is acquired based on the signal type; 281 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 282 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 283 using the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 284 wherein n is an integer or a non integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 285 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 286 making a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 287 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 288 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 289 6. A decoding device, comprising: 290 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal and a frequency envelope of a bandwidth extension frequency band; 291 wherein the decoding device is configured to pre set a start frequency bin of a bandwidth extension frequency band depending on an encoding bit-rate and to select a predetermined frequency band range of the frequency domain signal; 292 the decoding device further comprising: 293 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a the preset start frequency bin of a the bandwidth extension frequency band; 294 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a the predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 295 a second processing module
(33), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 296 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a the frequency envelope of the bandwidth extension frequency band, 297 wherein the frequency envelope of the bandwidth extension frequency band is acquired by an acquiring module
(35)based on a signal type; 298 wherein the first processing module
(32)is specifically configured to: 299 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 300 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 301 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 302 wherein the second processing modulo
(33)is specifically configured to: 303 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 304 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 305 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 306 Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 4 lauten (Änderungsfassung): 307 1. A method for predicting a bandwidth extension frequency band signal, comprising; 308 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal by using decoded frequency domain coefficients of an excitation signal of the frequency domain signal; 309 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; 310 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency of the bandwidth extension frequency band; 311 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bin to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 312 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 313 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 314 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 315 using the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 316 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 317 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 318 making a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 319 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 320 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band; 321 wherein the copies are made by mirror copying. 322 6. A decoding device, comprising: 323 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal by using decoded frequency domain coefficients of an excitation signal of the frequency domain signal; 324 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; 325 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 326 a second processing module
(33), configured to; when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 327 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 328 wherein the first processing module
(32)is specifically configured to: 329 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 330 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 331 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 332 wherein the second processing module
(33)is specifically configured to: 333 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 334 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 335 wherein n is 0 or an integer or a non-integer greater than 0, in is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band; 336 wherein the copies are made by mirror copying. 337 Patentansprüche 1 und 6 in der Fassung nach Hilfsantrag 5 lauten (Änderungsfassung): 338 1. A method for predicting a bandwidth extension frequency band signal for a harmonic signal, comprising: 339 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal and an initial frequency envelope of a bandwidth extension frequency band; 340 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a the bandwidth extension frequency band; 341 predicting
(102)an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 342 predicting
(103)the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated when the highest frequency bin to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 343 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band, 344 wherein the determination of the frequency envelope of the bandwidth extension frequency band comprises using a value that is obtained by performing weighting; calculation on the initial frequency envelope and N adjacent initial frequency envelopes, wherein N is greater than or equal to 1; 345 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 346 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 347 using the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 348 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 349 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 350 making a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 351 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 352 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 353 6. A decoding device, comprising: 354 a decoding module
(30), configured to: demultiplex a received bitstream, and decode the demultiplexed bitstream to obtain a frequency domain signal and an initial frequency envelope of a bandwidth extension frequency band; 355 a determining module
(31), configured to determine whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a the bandwidth extension frequency band; 356 a first processing module
(32), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band, predict an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band; 357 a second processing module
(33), configured to: when the determining module
(31)determines that the highest frequency bin to which a bit is allocated is greater than or equal to the preset start frequency bin of the bandwidth extension frequency band, predict the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated; and 358 a predicting module
(34), configured to predict a bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band, wherein, when the bandwidth extension frequency band signal is predicted for a harmonic signal, the determination of the frequency envelope of the bandwidth extension frequency band comprises using a value that is obtained by performing weighting calculation on the initial frequency envelope and N adjacent initial frequency envelopes, wherein N is greater than or equal to 1; 359 wherein the first processing module
(32)in specifically configured to: 360 make n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 361 use the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 362 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 363 wherein the second processing module
(33)is specifically configured to: 364 make a copy of an excitation signal from the m th frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 365 use the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 366 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 367 Mit Hilfsantrag „Abhängig 2“ verteidigt die Beklagte ausschließlich die Patentansprüche 5 (
  1. Alternative) sowie 10 (
  2. Alternative) nach erteilter Fassung. 368 Wegen des jeweiligen Wortlauts der abhängigen Ansprüche der Hilfsanträge wird auf die Akte verwiesen. 369 Die Klägerinnentreten auch den Hilfsanträgen entgegen und sehen die Gegenstände nach den unabhängigen Patentansprüchen in der Fassung der jeweiligen Hilfsanträge als nicht schutzfähig an. Die Gegenstände nach den Hilfsanträgen seien bereits unzulässig erweitert und den ursprünglichen Unterlagen nicht als zur Erfindung gehörend zu entnehmen. Darüber hinaus seien die Gegenstände der unabhängigen Patentansprüche nach den Hilfsanträgen auch mit den hinzugefügten Merkmalen nicht neu und nicht erfinderisch. Die in der mündlichen Verhandlung vom
  3. Januar 2024 von der Beklagten überreichten Hilfsanträge 3.0‘ und 3.0‘‘seien als verspätet zurückzuweisen, soweit der Senat deren Zulässigkeit bejahen würde. 370 Der Senat hat den Parteien einen Hinweis vom
  4. Dezember 2022 zugeleitet und hierin Fristen zur Stellungnahme gesetzt. 371 Wegen der weiteren Einzelheiten des Sach- und Streitstands wird auf die zwischen den Parteien gewechselten Schriftsätze nebst Anlagen, das Protokoll der mündlichen Verhandlung vom
  5. Januar 2024 sowie den weiteren Akteninhalt Bezug genommen. Die Beklagte hat nach Schluss der mündlichen Verhandlung mit nicht nachgelassenen Schriftsatz vom
  6. März 2024weiter vorgetragen. Die Klägerin zu 1 hat diesen Vortrag mit Schriftsatz vom
  7. März 2024 als verspätet gerügt und mit Schriftsatz vom
  8. Mai 2024 erwidert. Die Klägerin zu 2 hat mit Schriftsätzen vom
  9. März 2024 und
  10. April 2024 zu den Ausführungen der Beklagten Stellung genommen. A. 372 Auf die zulässigen Klagen ist das Streitpatent in der erteilten Fassung für nichtig zu erklären. Denn insoweit ist jedenfalls der Nichtigkeitsgrund der mangelnden Patentfähigkeit gemäß Art. II § 6 Abs. 1 Nr. 1 IntPatÜG, Art. 138 Abs. 1 Buchst. a) EPÜ i. V. m. Art. 52, 54, 56 EPÜ gegeben. Auch in den Fassungen nach den Hilfsanträgen erweist sich das Streitpatent als nicht patentfähig. 373 I. Zum Streitpatent (in erteilter Fassung), zur Aufgabe, zum Fachmann und zur Auslegung 374
  11. Das Streitpatent befasst sich mit einem Verfahren zur Vorhersage eines Bandbreiterweiterungs-Frequenzbandsignals und einer Decodiervorrichtung (Streitpatentschrift, Abs. 0001, Oberbegriff der Ansprüche 1 und 6). 375 Zur Reduzierung der Speicher- bzw. Übertragungsressourcen und zur Erhöhung der Qualität von Musiksignalen bei gleichzeitiger Gewährleistung der Qualität von Sprachsignalen sei es weit verbreitet, Audiosignale vom Zeit- in den Frequenzbereich zu transformieren und danach zu komprimieren und zu kodieren (Abs. 0002, 0003). Auch ein Hochfrequenzbandsignal in einem Audiosignal werde mittels einer FFT, MDCT oder einer DCT (Fast Fourier, Modified Discrete Cosine, Discrete Cosine Transform) in den Frequenzbereich transformiert und anschließend kodiert (Abs. 0004). Im Falle einer niedrigen Bitrate würden jedoch die meisten Bits zur präzisen Quantisierung der Niedrigfrequenzbandsignale verwendet und nur einige wenige Bits zur groben Quantisierung und Codierung der spektralen Einhüllenden der Hochfrequenzbandsignale. Die Quantisierungsparameter der Niedrigfrequenzbandsignale, die Anregungssignale und Frequenzeinhüllende umfassen, würden zusammen mit der Einhüllenden der Hochfrequenzbandsignale in einem Bitstrom zur einem Dekodierer übertragen (Abs. 0005). 376 Dieser stelle die Niedrigfrequenzbandsignale gemäß den empfangenen Quantisierungsparametern wieder her und prädiziere Anregungssignale im Hochfrequenzband anhand der Anregungssignale im niedrigen Frequenzbereich unter Verwendung einer Bandbreitenerweiterungs-Technologie (BWE, Band Width Extension). Die Frequenzeinhüllende des Hochfrequenzbandsignals modifiziere das prädizierte Anregungssignal des Hochfrequenzbandsignals (Abs. 0006). 377 Hoch- und Niedrigfrequenzband seien getrennt durch den höchsten Frequenzwert, dem ein Bit zugeordnet sei. Bei der BWE-Technologie werde ein Anregungssignal im Niedrigfrequenzband in das Hochfrequenzband kopiert und dort als Anregungssignal verwendet (Abs. 0007). 378 Ein Nachteil der aus dem Stand der Technik bekannten BWE-Methode zur Vorhersage eines Bandbreitenerweiterungssignals sei, dass in verschiedenen Rahmen Anregungssignale verschiedener Niedrigfrequenzbandsignale in dasselbe Hochfrequenzbandsignal kopiert werden könnten, was zu Diskontinuitäten der Anregungssignale und verringerter Qualität der vorhergesagten Bandbreitenerweiterungssignale und der Hörqualität führen könne (Abs. 0008, 0019). Zudem würde der Dekodierer bei der Prädiktion des Hochfrequenzbandsignals den Signaltyp (bspw. harmonische / nicht-harmonische Signale) nicht berücksichtigen und immer die gleiche spektrale Einhüllende verwenden, was das Rauschen erhöhen und zu einem relativ großen Fehler zwischen dem per BWE erzeugten und dem tatsächlichen Hochfrequenzbandsignal führen könne (Abs. 0019). 379
  12. Das Streitpatent stellt sich daher die Aufgabe, mit einem Verfahren zur Vorhersage eines bandbreitenerweiterten Frequenzbandsignals nach Anspruch 1 und einer Dekodiervorrichtung nach Anspruch 6 die vorgenannten technischen Probleme zu lösen, insbesondere für Kontinuität zwischen den prädizierten BWE-Signalen aufeinanderfolgender Rahmen zu sorgen und die Qualität des vorhergesagten bandbreitenerweiterten Frequenzbandsignals und damit die Hörqualität eines Audiosignals zu verbessern (Abs. 0010, 0019, 0021, 0028, 0056, 0057, 0062, 0074). 380
  13. Maßgeblicher Fachmann zur Bearbeitung und Lösung der zuvor geschilderten Aufgabe ist ein Ingenieur mit einem universitären Abschluss (Diplom oder Master) im Bereich der Elektro-, Nachrichten-, oder Informationstechnik, der über eine mehrjährige Berufserfahrung auf dem Gebiet der Audiocodes verfügt. Er verfolgt die Sitzungen der einschlägigen Normierungs- und Standardisierungsgremien und kennt die dort diskutieren Entwicklungsvorschläge. 381
  14. Das Streitpatent weist insgesamt zehn Patentansprüche auf mit dem unabhängigen Verfahrensanspruch 1 und dem unabhängigen Vorrichtungsanspruch 6 sowie den abhängigen Ansprüchen 2 bis 5 und 7 bis 10, die alle direkt oder indirekt auf die Ansprüche 1 und 6 rückbezogen sind. 382 Der Patentanspruch 1 lautet mit einer Gliederung, wobei in der deutschen Übersetzung einige in der Streitpatentschrift verwendete Wörter durch fachübliche Begriffe ersetzt sind (Änderungen gegenüber der Streitpatentschrift sind durch Unterstreichung gekennzeichnet): 383 1 A method for predicting a bandwidth extension frequency band signal, comprising: 384 Verfahren zur Vorhersage eines Bandbreitenerweiterungs-Frequenzbandsignals, umfassend: 385 1.1 demultiplexing
(100)a received bitstream, and decoding the demultiplexed bitstream to obtain a frequency domain signal; 386 Demultiplexen
(100)eines empfangenen Bitstroms und Dekodieren des demultiplexten Bitstroms, um ein Frequenz bereichs signal zu erhalten; 387 1.2 determining
(101)whether a highest frequency bin, to which a bit is allocated, of the frequency domain signal is less than a preset start frequency bin of a bandwidth extension frequency band; 388 Bestimmen
(101), ob ein höchstes Frequenzbin, dem ein Bit zugeordnet ist, des Frequenz bereichs signals kleiner ist als ein voreingestelltesAnfangs-Frequenzbin eines Bandbreitenerweiterungs-Frequenzbandes; 389 1.3 predicting
(102)an excitation signal of the bandwidth extension frequency band 390 Vorhersagen
(102)eines Anregungssignals des Bandbreitenerweiterungs-Frequenzbandes 391 1.3.1 according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band 392 gemäß einem Anregungssignal in einem vorbestimmten Frequenzbandbereich des Frequenz bereichs signals und dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes, 393 1.3.2 when the highest frequency bin to which a bit is allocated is less than the preset start frequency bin of the bandwidth extension frequency band; 394 wenn das höchste Frequenzbin, dem ein Bit zugeordnet ist, kleiner ist als das voreingestellte Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes; 395 1.4 predicting
(103)the excitation signal of the bandwidth extension frequency band 396 Vorhersagen
(103)des Anregungssignals des Bandbreitenerweiterungs-Frequenzbandes 397 1.4.1 according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin to which a bit is allocated 398 gemäß einem Anregungssignal in dem vorbestimmten Frequenzbandbereich des Frequenz bereichs signals, dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes und dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, 399 1.4.2 when the highest frequency bin to which a bit is allocated is no less than the preset start frequency bin of the bandwidth extension frequency band; and 400 wenn das höchste Frequenzbin, dem ein Bit zugeordnet ist, nicht kleiner ist als das voreingestellte Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes; und 401 1.5 predicting
(104)the bandwidth extension frequency band signal according to the predicted excitation signal of the bandwidth extension frequency band and a frequency envelope of the bandwidth extension frequency band; 402 Vorhersagen
(104)des Bandbreitenerweiterungs-Frequenzbandsignals gemäß dem vorhergesagten Anregungssignal des Bandbreitenerweiterungs-Frequenzbandes und einer Frequenzhüllkurve des Bandbreitenerweiterungs-Frequenzbandes; 403 1.6 wherein the predicting an excitation signal of the bandwidth extension frequency band according to an excitation signal within a predetermined frequency band range of the frequency domain signal and the preset start frequency bin of the bandwidth extension frequency band comprises: 404 wobei das Vorhersagen eines Anregungssignals des Bandbreitenerweiterungs-Frequenzbandes gemäß einem Anregungssignal in einem vorbestimmten Frequenzbandbereich des Frequenz bereichs signals und dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes umfasst: 405 1.6.1 making n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 406 Erzeugen von n Kopien des Anregungssignals in dem vorbestimmten Frequenzbandbereich des Frequenz bereichs signals und 407 1.6.2 using the n copies of the excitation signal as an excitation signal between the preset start frequency bin of the bandwidth extension frequency band and a highest frequency bin of the bandwidth extension frequency band, 408 Verwenden der n Kopien des Anregungssignals als Anregungssignal zwischen dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes und einem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes, 409 1.6.3 wherein n is an integer or a non-integer greater than 0, and n is equal to a ratio of a quantity of frequency bins between the preset start frequency bin of the bandwidth extension frequency band and the highest frequency bin of the bandwidth extension frequency band to a quantity of frequency bins within the predetermined frequency band range of the frequency domain signal; where n is an integer or a non-integer greater than 0; and 410 wobei n eine ganze Zahl oder eine nicht ganze Zahl größer als 0 ist und n gleich einem Verhältnis einer Anzahl von Frequenzbins zwischen dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes und dem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes zu einer Anzahl von Frequenzbins in dem vorbestimmten Frequenzbandbereich des Frequenz bereichs signals ist; wobei n eine ganze Zahl oder eine nicht ganze Zahl größer als 0 ist; und 411 1.7 wherein the predicting the excitation signal of the bandwidth extension frequency band according to the excitation signal within the predetermined frequency band range of the frequency domain signal, the preset start frequency bin of the bandwidth extension frequency band, and the highest frequency bin, to which a bit is allocated comprises: 412 wobei das Vorhersagen des Anregungssignals des Bandbreitenerweiterungs-Frequenzbandes gemäß dem Anregungssignal in dem vorbestimmten Frequenzbandbereich des Frequenz bereichs signals, dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes und dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, umfasst: 413 1.7.1 making a copy of an excitation signal from the mth frequency bin fexc_start+ above a start frequency bin fexc_start of the predetermined frequency band range of the frequency domain signal to an end frequency bin fexc_end of the predetermined frequency band range of the frequency domain signal and 414 Erzeugen einer Kopie des Anregungssignals von dem m-ten Frequenzbin f exc_start+ über einem Anfangs-Frequenzbin f exc_start des vorbestimmten Frequenzbandbereichs des Frequenz bereichs signals bis zu einem End-Frequenzbin f exc_end des vorbestimmten Frequenzbandbereichs des Frequenz bereichs signals und 415 1.7.2 [making] n copies of the excitation signal within the predetermined frequency band range of the frequency domain signal, and 416 [ Erzeugen von ] n Kopien des Anregungssignals in dem vorbestimmten Frequenzbandbereich des Frequenz bereichs signals und 417 1.7.3 using the two parts of excitation signals as an excitation signal between the highest frequency bin, to which a bit is allocated, of the frequency domain signal and the highest frequency bin of the bandwidth extension frequency band, 418 Verwenden der beiden Teile der Anregungssignale als Anregungssignal zwischen dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, des Frequenz bereichs signals und dem höchsten Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes, 419 1.7.4 wherein n is 0 or an integer or a non-integer greater than 0, m is a positive integer, and m is equal to a value of a quantity of frequency bins between the highest frequency bin to which a bit is allocated and the preset start frequency bin of the bandwidth extension frequency band. 420 wobei n gleich 0 ist oder eine ganze Zahl oder eine nicht ganze Zahl größer als 0 ist, m eine positive ganze Zahl ist und m gleich einem Wert einer Anzahl von Frequenzbins zwischen dem höchsten Frequenzbin, dem ein Bit zugeordnet ist, und dem voreingestellten Anfangs-Frequenzbin des Bandbreitenerweiterungs-Frequenzbandes ist. 421 5. Der Gegenstand des Streitpatents bedarf hinsichtlich der Merkmale der angegriffenen Patentansprüche der Erläuterung. 422 Die inhaltliche Beurteilung des dekodiererseitigen Verfahrens (Merkmal 1.1: decoding the demultiplexed bitstream) nach Patentanspruch 1 ist auf die Dekodiervorrichtung (decoding device) nach Patentanspruch 6 in entsprechender Weise übertragbar; daher wird im Folgenden nur Patentanspruch 1 betrachtet. Im Zusammenhang mit der in Figur 8 gezeigten Ausführungsform der Dekodiervorrichtung (decoding device 80) ist angegeben, dass das beanspruchte Verfahren ganz oder teilweise in einem Dekodierprozessor (decoding processor 803) oder in einer Betriebseinheit (processing unit 804) realisiert sein kann (Abs. 0077 – 0081). 423 5.1 Der Anspruch 1 ist auf ein Verfahren zur Prädiktion eines Bandbreitenerweiterungsfrequenzbandsignals (A method for predicting a bandwidth extension frequency band signal) gerichtet (Merkmal 1). Auch wenn das Streitpatent sich durchgängig mit Audiosignalen beschäftigt, sind die Ansprüche in der erteilten Fassung nicht darauf beschränkt. 424 Als ersten Verfahrensschritt umfasst das beanspruchte Verfahren das Demultiplexen, d. h. das Aufteilen oder Entflechten eines empfangenen Bitstromsund Dedodieren des demultiplexten Bitstroms, um ein Frequenzbereichssignal (frequency domain signal) zu erhalten (Merkmal 1.1). Hier entnimmt der Fachmann, dass der empfangene Bitstrom nicht nur das kodierte niederfrequente Frequenzbereichssignal, sondern auch weitere, typischerweise ebenfalls kodierte, Informationen enthält, insbesondere die im Merkmal 1.5genannte spektrale Einhüllende des Bandbreitenerweiterungsfrequenzbands (frequency envelope of the bandwidth extension frequency band), d. h. die Einhüllende für den hohen, in der Dekodiervorrichtung künstlich zu erzeugenden Frequenzbereich. Zudem können – fachüblich – Hilfsinformationen vom Kodierer an den Dekodierer übertragen werden, etwa welcher Signaltyp gerade vorliegt (Anspruch 4 erteilter Fassung: decoding the bitstream to obtain a signal type). 425 Dem Fachmann ist bekannt, dass viele Audio-Kodierer eine Transformation der zu übertragenen Audiosignale vom Zeit- in den Frequenzbereich durchführen und quantisierte Spektralkomponenten des so erzeugten frequenzdiskreten Spektrums kodieren und als Bitstrom an den Dekodierer übertragen (Absätze 0002 bis 0005). Insofern versteht der Fachmann unter dem in Merkmal 1.1 genannten Frequenzbereichssignal insbesondere quantisierte Spektralkoeffizienten (frequency domain coefficients) eines frequenzdiskreten (Amplituden-)Spektrums für den niedrigen Frequenzbereich(Abs. 0024). 426 Nach den Ausführungsbeispielen gemäß den Figuren 6 und 7 führt ein Dekodierungsmodul (decoding module 30) als Teil der Dekodiervorrichtung die in Merkmal 1.1 genannten Verfahrensschritte durch (Abs. 0060, 0068). Merkmal 1.1verlangt, dass der empfangene Bitstrom demultiplexiert und dekodiert wird, um ein Frequenzbereichssignal zu erhalten. Es ist nach Anspruch 1 des Streitpatents nicht ausgeschlossen, dass in weiteren Verfahrens(zwischen)schritten eine Transformation in einen anderen Bereich, z. B. den Zeitbereich, stattfindet, solange die Anforderungen der einzelnen Merkmale erfüllt sind. Das Streitpatent verhält sich zu den Implementierungsdetails des Verfahrens bzw. der entsprechenden Vorrichtungen (Fig.

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