Video signal coding device and decoding device utilizing plural

Details Video signal coding device and decoding device utilizing plural Video signal coding device and decoding device utilizing plural

1990-04-27

1992-03-10

Kostak, Victor R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358135, H04N 713

Patent

active

050953664

ABSTRACT:
In an apparatus for encoding a video signal having correlation between picture frames, there is provided a coding device for encoding the video signal by sequentially using a plurality of quantizers having quantization characteristics different from one another for every picture frame. When regions of values indicated by a plurality of encoded codes corresponding to an identical picture element in a plurality of picture frame adjacent to one another in time overlap with one another, there is also provided a decoding device having a value in the overlapped region as a decoded value. It becomes thereby possible to provide high picture quality for transmitted signals and to reduce a transmission data rate.

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patent: 4744085 (1988-05-01), Fukatsu
patent: 4831636 (1989-05-01), Taniguchi et al.
patent: 4851906 (1989-07-01), Koga et al.
patent: 4903124 (1990-02-01), Hoshi et al.
patent: 4995059 (1991-02-01), Ishikawa

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