Television – Bandwidth reduction system – Data rate reduction
Patent
1996-10-21
1998-02-17
Chin, Tommy P.
Television
Bandwidth reduction system
Data rate reduction
348413, H04N 712
Patent
active
057196311
ABSTRACT:
In a method for coding a video data stream of a video sequence consisting of image blocks, a motion estimate for each block by determining a motion vector for that individual image block. The motion vectors of adjacent blocks are checked for agreement with one another. The transformation coding of an image block to be coded is suppressed, if the motion vector for that image block best corresponds, as the result of the agreement check image vector of a preceding, already transformation-coded image block. In this way, a considerable savings of the required data rate for the transmission of the video data stream to the receiver is achieved, as is a considerable savings in computing expense for the execution of the transformation coding.
REFERENCES:
patent: 5126841 (1992-06-01), Tanaka et al.
patent: 5235419 (1993-08-01), Krause
patent: 5321725 (1994-06-01), Paik et al.
patent: 5412435 (1995-05-01), Nakajima
patent: 5440344 (1995-08-01), Asamura et al.
patent: 5565922 (1996-10-01), Krause
"Overview of the px64kbit/s Coding Standard," Liou, Communications of the ACM, vol. 34, No. 4, Apr., 1991 pp. 60-63.
"The JPEG Still Picture Compression Standard,", Wallace, Communications of the ACM, vol. 34, No. 4, Apr., 1991 pp. 31-44.
"International Standardization of Picture Coding," Okubo et al., IEEE Transactions, vol. E74, No. 3, Mar., 1991 pp. 533-538.
"MPEG: A Video Compression Standard for Multimedia Applications," Le Gall, Communications of the ACM, vol. 34, No. 4, Apr., 1991, pp. 47-58.
"Ein Codec fur die digitale Ubertragung von HDTV-Signalen," Hoffmann et al., Rundfunktechnische Mitteilungen, vol. 5, 1992 pp. 196-205.
"New Trends in Very Low Bitrate Video Coding," Ebrahimi et al., Proc. of the IEEE, vol. 83, No. 6, Jun., 1995, pp. 877-891.
"Motion-Compensated Television Coding: Part I, " Netravali et al., Bell System Technical Journal, vol. 58 Mar., 1979, pp. 631-690.
Chin Tommy P.
Lee Y.
Siemens Aktiengesellschaft
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