Display processor updating its color map memories from the serial output port of a video random-access memory
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United States of America Patent
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-
Dec 13, 1988
Grant Date -
N/A
app pub date -
Oct 14, 1986
filing date -
Jun 18, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A display processor for a computer with graphics capability includes color map memories addressed by portions of pixel codes during display line trace intervals. The read-outs from these color map memories provide the primary color component signals from which the drive signals for the display monitor kinescope are derived. The pixel codes, from which color map memory addresses are derived, are supplied at video rate to the display processor from the serial output port of dual-ported video random access memory. The color map memories are loaded with new color map data during display retrace intervals. By supplying this new color map data from the serial port of the dual-ported video random-access memory, the color map memories can be rapidly updated.
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