Computer graphics processing and selective visual display system – Display peripheral interface input device
Patent
1996-03-21
1999-12-21
Hjerpe, Richard A.
Computer graphics processing and selective visual display system
Display peripheral interface input device
345186, 345203, 348453, G09G 504
Patent
active
060055464
ABSTRACT:
A display controller assists a host processor in decoding MPEG data. The display controller receives YUV data in non-pixel video format from a host CPU and perform the otherwise CPU intensive task of rasterization within the display controller. In addition, the display controller may use its internal BITBLIT engine to copy U and V data from one line in a BITBLIT operation to adjacent lines, so as to replicate U and V data. A byte mask preserves Y data on the adjacent lines from being overwritten. At the end of the BITBLIT operation, the display controller generates a signal indicating that the frame buffer has been filled with new data, and thus display controller automatically switches to reading from the newly written frame buffer.
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Hjerpe Richard A.
Nguyen Francis
S3 Incorporated
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