Communications: electrical – Land vehicle alarms or indicators – Internal alarm or indicator responsive to a condition of the...
Patent
1990-08-03
1992-08-04
Harkcom, Gary V.
Communications: electrical
Land vehicle alarms or indicators
Internal alarm or indicator responsive to a condition of the...
340747, 340750, 340725, G06F 1564
Patent
active
051365243
ABSTRACT:
Circuitry for performing high speed operations on certain Boolean raster operations in a workstation whose functions include the display of graphics images using multiple planes and having foreground and background colors. The circuitry includes a logic circuit for determining whether a particular Boolean raster operation is one for which the high speed operation is available. A Boolean raster operation is determined to be available for high speed operation if the outcome of the operation can be determined by reading only one operand, namely the source data. If the other operand, namely the destination data, is needed to determine the outcome if the operation, then the operation is performed normally. Otherwise, the operation may be performed by reading the source data only.
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Priem Curtis
Webber Thomas
Harkcom Gary V.
Nguyen Phu K.
Sun Microsystems Inc.
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