High efficiency encoding system

Details High efficiency encoding system High efficiency encoding system

1987-07-17

1989-01-31

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358105, 358133, 358136, H04N 712, H04N 718

Patent

active

048020052

ABSTRACT:
In a high efficiency encoding system, a picture is divided into many three-dimensional blocks, or blocks each consisting of n areas in each of n frames continuous in terms of time. Any movement of the picture is detected in each block to develop movement information. The picture element number of each block is sub-sampled, and the sub-sampling phases are sequentially shifted with respect to the blocks. Data of picture elements thinned by sub-sampling (i.e., not transmitted) are decoded, while data relating to a still portion of the picture is decoded with excellent results by merely combining sub-sampling patterns.

REFERENCES:
patent: 4667233 (1987-05-01), Furukawa
patent: 4683494 (1987-07-01), Furukawa et al.
patent: 4691329 (1987-09-01), Turi et al.
patent: 4692801 (1987-09-01), Ninomiya et al.
patent: 4710811 (1987-12-01), Kondo
patent: 4729021 (1988-03-01), Kondo

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