Binary data compression and expansion processing apparatus

Details Binary data compression and expansion processing apparatus Binary data compression and expansion processing apparatus

1987-02-24

1988-07-26

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358260, 375 27, H04N 1413

Patent

active

047604611

ABSTRACT:
According to a binary data compression and expansion processing apparatus of this invention, a reference line data storage section for storing reference line data is separately provided from an image data memory. Binary data input through an input data bus is subjected to compression and expansion processing by a compression and expansion processing section in accordance with reference line data read out from the reference line data storage section, and the processed result is output to an external device through an output data bus. The compression and expansion processing section comprises a decoding processing section, for generating run length data corresponding to input encoded data in expansion processing, and a generation processing section, for generating image data in expansion processing. The decoding processing section and the generation processing section serve as stages of pipeline processing, whereby the apparatus receives data to be processed from the input data bus and unidirectionally executes processing.

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Kazuo Kobayashi, "Advances in Facsimile Art", IEEE Communications Magazine, vol. 23, No. 2, pp. 27-35, Feb. 1985.

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