Image compression and decompression apparatus with reduced frame

Details Image compression and decompression apparatus with reduced frame Image compression and decompression apparatus with reduced frame

1994-11-18

1996-04-30

Powell, Mark R.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358470, G06F 1500

Patent

active

055133010

ABSTRACT:
An image compression and decompression apparatus wherein the scale of a required frame memory is reduced to allow reduction of the circuit scale is disclosed. The image compression and decompression apparatus comprises first and second frame memories each of which is used as, upon compression processing, a pre-frame memory for storing digital image data before compression but as, upon decompression processing, a post-frame memory for storing digital image data after decompression. First and second compressed image memories are each used as, upon compression processing, a transmission buffer for storing data after compression but as, upon decompression processing, a reception buffer for storing data before decompression. Each of the two kinds of memories is constructed in a double buffer structure. Control of two kinds of memory controllers for controlling accessing to the two kinds of memories, compression and decompression processing, and sequence control are effected using a program.

REFERENCES:
patent: 4884147 (1989-11-01), Arimoto et al.
patent: 5175631 (1992-12-01), Juri et al.
patent: 5329616 (1994-07-01), Silverbrook
patent: 5343256 (1994-08-01), Kimura et al.
patent: 5357614 (1994-10-01), Pattisam et al.
patent: 5363206 (1994-11-01), Fukushima
patent: 5379070 (1995-01-01), Retter et al.
patent: 5379351 (1995-01-01), Fandrianto et al.
patent: 5384849 (1995-01-01), Jeong
patent: 5394534 (1995-02-01), Kulakowsi et al.
patent: 5410352 (1995-04-01), Watanabe
patent: 5410671 (1995-04-01), Elgamal et al.

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