Image decoder for image compression/expansion system

Details Image decoder for image compression/expansion system Image decoder for image compression/expansion system

1995-02-08

1997-10-07

Lee, Thomas D.

Facsimile and static presentation processing

Facsimile

Reduced time or bandwidth for static image communication

358433, 382232, 382234, 382236, 348398, 348413, H04N 141, H04N 1415

Patent

active

056754248

ABSTRACT:
An image decoder for an image compression/expansion system of HDTV or MPEG standard having an image motion compensation process, in which transform coding of video signal is parallel-processed in the unit of a predetermined image block with a reduced-speed clock, and at the same time, motion compensation is processed in the unit of overall picture with an original high speed clock. According to the present invention, motion compensation errors generated in contour portions of respective parallel-processed subpictures can be prevented and accordingly, picture quality can be improved and also hardware construction can be simplified.

REFERENCES:
patent: 5130797 (1992-07-01), Murakami
patent: 5150432 (1992-09-01), Ueno
patent: 5177797 (1993-01-01), Takenaka et al.
patent: 5251028 (1993-10-01), Iu

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