Television – Bandwidth reduction system – Data rate reduction
Patent
1993-09-16
1995-07-25
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348423, H04N 750
Patent
active
054366640
ABSTRACT:
A method masks errors in a transmission system of a picture sequence including a first series of pictures that are autonomously coded by pixel blocks (intra coding). Each picture of the first series is followed by several pictures of a second series of pictures that are differentially coded by blocks with respect to at least one reference picture of the first series of pictures (inter coding). The codes of each block of the second picture series comprise at least a motion vector between the pixels of the block and the pixels of the elements of the reference picture. The method provides for adding, to the data corresponding to each block of an intrapicture, data indicating the motion vector of this block with respect to at least one additional picture, and, if a transmission error is detected, the error blocks of the intrapicture are processed like error blocks of an interpicture.
REFERENCES:
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patent: 5212549 (1993-09-01), Ng
IEEE Journal on Selected Areas in Communication, vol. 7, No. 5, Jun. 1989, New York, US, pp. 807-814, M. Wada, "Selective Recovery of Video Packet Loss Using Error Concealment".
International Conference on Communications ICC '91, vol. 1/3, Jun. 23, 1991, IEEE, New York, US, pp. 496-500, F. C. Jeng et al., "Concealment of Bit Error and Cell Loss in Inter-frame Coded Video Transmission".
Communications of the Association for Computing Machinery, vol. 34, No. 4, Apr. 1991, New York, US, pp. 46-58, D. Le Gall, "MPEG: A Video Compression Standard for Multimedia Applications".
Electronic Design, May 23, 1991, pp. 49-53, Milt Leonard, "IC Executes Still-Picture Compression Alogrithms".
Electronic Design, Apr. 2, 1992, pp. 45-54, Milt Leonard, "Silicon Solution Merges Video, Stills, and Voice".
Britton Howard W.
SGS-Thomson Microelectronics S.A.
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