System for encoding or decoding analog video signals

Details System for encoding or decoding analog video signals System for encoding or decoding analog video signals

1987-07-24

1988-11-01

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358260, 358280, H04N 140

Patent

active

047824000

ABSTRACT:
A coder/decoder system develops signals for printing half tone images. The invention uses a selected one of many dither matrices to provide a selected resolution of half tone images. Each dither matrix has n-by-n capacity. The coder and decoder includes a cascaded number of register and EX-OR gate combinations corresponding to the largest dither matrix. A number of steering gates block off parts of the cascade corresponding to the size of the dither matrix that is actually selected for the transmission of any given image.

REFERENCES:
patent: 4651293 (1987-03-01), Kato

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