Compressed image producing system

Details Compressed image producing system Compressed image producing system

1978-04-17

1981-09-08

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

3401463MA, H04N 712

Patent

active

042888166

ABSTRACT:
A compressed image producing system is disclosed which comprises a buffer memory unit including a plurality of cascade-connected shift register stages to which image signals time-sequentially produced by the conversion of the respective picture elements of an image into the corresponding binary signals through the scanning of the image are successively applied, a partial image extracting unit including a plurality of registers which take in the image signals from the shift register stages respectively and parallely delivers the image signals bit by bit, and a sampling pulse generating circuit which generates sampling pulses at predetermined intervals. The respective shift registers of the buffer memory perform their data shift operations in response to the sampling pulses to intermittently take in the image signals so that sampling point data corresponding to the scanning lines in number are stored in each register and a plurality of compressed images constructed by different groups of the sampling points are continuously produced through the shifting of the image extracting position.

REFERENCES:
patent: 3499980 (1970-03-01), Smierciak
patent: 3887762 (1975-06-01), Uno et al.
patent: 4014000 (1977-03-01), Uno et al.

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