System for clearing an image data buffer in a high-speed digital

Details System for clearing an image data buffer in a high-speed digital System for clearing an image data buffer in a high-speed digital

1997-09-29

1999-08-31

Coles, Edward L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

395114, 395116, 358426, 3582614, 358404, G06K 1500, H04N 100, H04N 141

Patent

active

059464593

ABSTRACT:
A system for clearing a buffer for holding bitmap data output by a decomposer or interpreter in a digital printing apparatus exploits a decompressor chip. Instead of having the processor directly write blank data into the buffer to clear the buffer, a "buffer clear" software utility sends compressed blank image data to the decompressor chip, which in turn decompresses the blank image and writes the decompressed blank image to the necessary location in the buffer.

REFERENCES:
patent: 4760608 (1988-07-01), Shimizu et al.
patent: 5008760 (1991-04-01), Shimizu et al.
patent: 5107338 (1992-04-01), Saito
patent: 5864407 (1999-01-01), Shimizu et al.

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