Method and means for coding and decoding picture information

Details Method and means for coding and decoding picture information Method and means for coding and decoding picture information

1988-02-17

1989-06-06

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358135, 358136, H04N 7133, H04N 7137

Patent

active

048376175

ABSTRACT:
A method and apparatus for coding and decoding picture information is described. According to prior art two modes, are utilized for transmitting picture information, respectively. According to the present invention advantages are obtained in using a mixed mode, i.e. certain frequency components are transmitted with prediction and the remaining components without. In the invention two channels, with and without prediction, are utilized respectively. These channels are selectively connected by means of switches, which are controlled by a control means.

REFERENCES:
patent: 4125861 (1978-11-01), Mounts
patent: 4134134 (1979-01-01), Lux
patent: 4580162 (1986-04-01), Mori
patent: 4656500 (1987-04-01), Mori
patent: 4704628 (1987-11-01), Chen
patent: 4707738 (1987-11-01), Ferre
patent: 4723161 (1988-02-01), Koga
patent: 4757383 (1988-07-01), Tanaka

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