Semiconductor integrated circuit device allowing fast rewriting of image data and image data processing system using the same
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United States of America Patent
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Jun 16, 1998
Grant Date -
N/A
app pub date -
Mar 24, 1995
filing date -
Mar 31, 1994
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Two frame buffer memories are used. Depth coordinates are stored in a data bank memory of the first frame buffer memory. A comparing unit makes comparison between the depth coordinate of an image data currently displayed and the newly input depth coordinate, and thereby outputs a comparison result signal from a comparison result signal output terminal. In the second frame buffer memory, color data is stored in a data bank memory, and the comparison result signal sent from the first frame buffer memory is input via a comparison result signal input terminal. An image processing unit performs blending processing on the color data in response to the comparison result signal, and rewrites the color data.
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