Display processor for use with a computer

Details Display processor for use with a computer Display processor for use with a computer

G - Physics

09

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354/236.2

G09G 1/28 (2006.01) G09G 5/06 (2006.01)

Patent

CA 1290460

Abstract A display processor for a system 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 updated much more quickly than has been the practice in prior-art display processors.

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