Source: http://www.google.de/patents/US7299190
Timestamp: 2013-05-21 21:34:36
Document Index: 337177190

Matched Legal Cases: ['art 3', 'art 7', 'art 7', 'art 7', 'Application No. 03', 'Application No. 03']

Patent US7299190 - Quantization and inverse quantization for audio - Google PatenteSuche Bilder Maps Play YouTube News Gmail Drive Mehr » Erweiterte Patentsuche | Webprotokoll | Anmelden Erweiterte Patentsuche PatenteAn audio encoder and decoder use architectures and techniques that improve the efficiency of quantization (e.g., weighting) and inverse quantization (e.g., inverse weighting) in audio coding and decoding. The described strategies include various techniques and tools, which can be used in combination...http://www.google.de/patents/US7299190?utm_source=gb-gplus-sharePatent US7299190 - Quantization and inverse quantization for audio Ver�ffentlichungsnummerUS7299190 B2PublikationstypErteilung Anmeldenummer10/642,551 Ver�ffentlichungsdatum20. Nov. 2007Eingetragen15. Aug. 2003 Priorit�tsdatum15. Aug. 2003Auch ver�ffentlicht unterUS7801735US20040044527US20080021704 ErfinderWei-ge ChenNaveen ThumpudiUrspr�nglich Bevollm�chtigterMicrosoft Corporation US-Klassifikation704/500704/E19.15704/200.1704/E19.5Internationale KlassifikationG10L19/02G10L19/00G10L21/00 UnternehmensklassifikationG10L19/008G10L19/032 Europ�ische KlassifikationG10L 19/008G10L 19/032ReferenzenPatentzitate (43)Nichtpatentzitate (54) Referenziert von (19)Externe LinksUSPTO USPTO-Zuordnung EspacenetQuantization and inverse quantization for audioUS 7299190 B2 Zusammenfassung An audio encoder and decoder use architectures and techniques that improve the efficiency of quantization (e.g., weighting) and inverse quantization (e.g., inverse weighting) in audio coding and decoding. The described strategies include various techniques and tools, which can be used in combination or independently. For example, an audio encoder quantizes audio data in multiple channels, applying multiple channel-specific quantizer step modifiers, which give the encoder more control over balancing reconstruction quality between channels. The encoder also applies multiple quantization matrices and varies the resolution of the quantization matrices, which allows the encoder to use more resolution if overall quality is good and use less resolution if overall quality is poor. Finally, the encoder compresses one or more quantization matrices using temporal prediction to reduce the bitrate associated with the quantization matrices. An audio decoder performs corresponding inverse processing and decoding.
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