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1. WO2000041396 - METHOD AND DEVICE FOR ROBUST DECODING OF HEADER INFORMATION IN MACROBLOCK-BASED COMPRESSED VIDEO DATA

Publication Number WO/2000/041396
Publication Date 13.07.2000
International Application No. PCT/US2000/000373
International Filing Date 07.01.2000
Chapter 2 Demand Filed 25.07.2000
IPC
H03M 13/03 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
MCODING, DECODING OR CODE CONVERSION, IN GENERAL
13Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
03Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
H03M 7/30 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
H04L 1/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
H04N 19/89 2014.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
85using pre-processing or post-processing specially adapted for video compression
89involving methods or arrangements for detection of transmission errors at the decoder
CPC
H04N 19/00
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
H04N 19/70
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
70characterised by syntax aspects related to video coding, e.g. related to compression standards
H04N 19/89
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
19Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
85using pre-processing or post-processing specially adapted for video compression
89involving methods or arrangements for detection of transmission errors at the decoder
Applicants
  • PACKETVIDEO CORPORATION [US/US]; Building 14, Suite 140 3550 General Atomics Court San Diego, CA 92121, US
Inventors
  • WEN, Jiangtao; US
Agents
  • ZIMMER, Kevin, J.; Cooley Godward LLP 3000 El Camino Real Five Palo Alto Square Palo Alto, CA 94306-2155 , US
Priority Data
09/226,22707.01.1999US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND DEVICE FOR ROBUST DECODING OF HEADER INFORMATION IN MACROBLOCK-BASED COMPRESSED VIDEO DATA
(FR) PROCEDE ET DISPOSITIF PERMETTANT D'EFFECTUER UN DECODAGE COHERENT D'INFORMATIONS D'EN-TETE CONTENUES DANS UN MACROBLOC DE DONNEES VIDEO COMPRIMEES
Abstract
(EN)
A method and apparatus for decoding encoded parameter data included within a packet containing encoded video data transmitted over an error prone channel is disclosed herein. The method contemplates determining a bit length L of the encoded parameter data. Candidate sequences of codewords are then compared to the encoded parameter data in accordance with a predetermined distortion metric. An optimized sequence is selected from the candidate sequences based upon predefined criteria related to the distortion metric. The optimized sequence collectively has a number of bits equivalent to the bit length L and is usable in decoding the encoded video data.
(FR)
Cette invention concerne un procédé et un appareil utilisé pour décoder des données paramètres codées contenues dans un paquet de données vidéo codées, transmises par un canal sujet à commettre des erreurs. Ce procédé vise à déterminer la longueur binaire L des données paramètres codées. Les séquences de mots codes possibles sont comparées avec les données paramètres codées, conformément à un système de mesure de distorsion prédéterminé. Une séquence optimale est sélectionnée parmi les séquences possibles, sur la base de critères prédéfinis relatifs au système de mesure de distorsion. La séquence optimale a d'une part un nombre de bits équivalent à la longueur binaire L et peut d'autre part être utilisée pour le décodage des données vidéo codées.
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