Television – Bandwidth reduction system – Data rate reduction
Patent
1993-07-16
1995-08-08
Britton, Howard W.
Television
Bandwidth reduction system
Data rate reduction
348402, 348423, 348467, H04N 750
Patent
active
054403456
ABSTRACT:
A high efficient encoding/decoding system has processor for processing a sub-macro block having at least one collection of blocks as an encoding unit of input data, and a macro block having a macro block length data for indicating the length of the macro block itself in its head position and at least one of the sub-macro blocks. The collection of blocks in the sub-macro block includes a first passage for a variable length data having at least one collection of data obtained by performing a variable length encoding for every block of encoding unit on the input data, header information associated with the variable length data and a sub-macro block length data for indicating the length of the sub-macro block itself, a second passage for an adjustment bit data and a length data indicating the length of the adjustment bit data itself, and a third passage for a correction directing signal, thus for transmitting a data for selecting at least one of the three passages by embedding the selecting data in a coefficient based on an encoding characteristics of the variable length data.
REFERENCES:
patent: 5121205 (1992-06-01), Ng
patent: 5191436 (1993-03-01), Yonemitsu
"Video Codec Standardization in CCITT Study Group XV," Signal Processing: Image Communication, vol. 1, No. 1, Jun. 1989, Elsevier Science Publishers, pp. 45-54.
"Draft Revision of Recommendation H.261: Video Codec for Audiovisual Services at p x 64 kbits/s," Signal Processing: Image Communication, vol. 2, No. 2, Aug. 1990, Elsevier Science Publishers, pp. 221-239.
Britton Howard W.
Kabushiki Kaisha Toshiba
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