Image decoder for image compression/expansion system
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United States of America Patent
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Oct 7, 1997
Grant Date -
N/A
app pub date -
Feb 8, 1995
filing date -
May 19, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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