Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1991-12-04
1993-03-09
Harkcom, Gary V.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
395155, 340747, 340724, G06F 1566
Patent
active
051931486
ABSTRACT:
A method of moving blocks of pixel data, including window-identifying data, from a source area to a destination area within a frame buffer in a computer graphics system comprises the steps of: reading a block of pixel data from the source area into a pixel cache memory; combining source tiles with destination tiles in the cache; comparing pixel window identifiers read from the frame buffer with a pixel window identifier previously stored in the memory to determine whether the pixel window identifiers read from the frame buffer match the previously stored pixel window identifier; discarding each pixel whose corresponding window identifier does not match the previously stored window identifier; and updating the frame buffer with the pixel data not discarded.
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Alcorn Byron A.
Cherry Robert W.
Coleman Mark D.
Rauchfuss Brian D.
Harkcom Gary V.
Hewlett--Packard Company
Kelley Guy J.
Nguyen Phu K.
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