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1. WO2006124850 - METHOD AND APPARATUS FOR IMPROVED MULTIMEDIA DECODER

Publication Number WO/2006/124850
Publication Date 23.11.2006
International Application No. PCT/US2006/018849
International Filing Date 15.05.2006
IPC
H03M 7/40 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same information is represented by a different sequence or number of digits
30Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
40Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
CPC
H03M 7/40
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same ; , similar or subset of; information is represented by a different sequence or number of digits
30Compression
40Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
H03M 7/425
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING; DECODING; CODE CONVERSION IN GENERAL
7Conversion of a code where information is represented by a given sequence or number of digits to a code where the same ; , similar or subset of; information is represented by a different sequence or number of digits
30Compression
40Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
42using table look-up for the coding or decoding process, e.g. using read-only memory
425for the decoding process only
Applicants
  • QUALCOMM INCORPORATED [US]/[US] (AllExceptUS)
  • RAVEENDRAN, Vijayalakshmi, R. [IN]/[US] (UsOnly)
  • CHEN, Peisong [CN]/[US] (UsOnly)
  • TIAN, Tao [CN]/[US] (UsOnly)
Inventors
  • RAVEENDRAN, Vijayalakshmi, R.
  • CHEN, Peisong
  • TIAN, Tao
Agents
  • WADSWORTH, Philip, R.
Priority Data
60/681,19413.05.2005US
60/789,45504.04.2006US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS FOR IMPROVED MULTIMEDIA DECODER
(FR) PROCEDE ET DISPOSITIF POUR DECODEUR MULTIMEDIA AMELIORE
Abstract
(EN)
Embodiments include systems and methods of improving processing in a decoder in a multimedia transmission system. Multimedia data may include one or more of motion video, audio, still images, or any other suitable type of audio-visual data. One embodiment includes a system and method of parsing fixed and variable length codes from a bit-wise stream of multi-media data by maintaining and reading the data in a processor aligned (e.g., word aligned) way. Another embodiment includes a system and method of decoding variable length codes, particular as received from such a variable length code using multiple levels of decoding tables to speed up decoder table lookup.
(FR)
Sous différentes variantes, systèmes et procédés pour amélioration du traitement dans un décodeur de système de transmission multimédia. Les données multimédia peuvent être une ou plusieurs images vidéo mobiles, des données audio, une ou plusieurs images fixes, ou bien tout type de données audiovisuelles. Selon une variante, on décrit un système et un procédé d'analyse syntaxique de codes à longueur fixe et variable à partir d'un flux de bits de données multimédia par le maintien et la lecture des données dans un mode aligné en termes de processeur (par exemple, en termes de mots). Selon une autre variante, système et procédé pour le décodage de codes de longueur fixe et variable, en particulier à la réception de code à longueur variable via plusieurs niveaux de tables décodage permettant d'accélérer la consultation de table de décodeur.
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