Computer graphics dynamic control system

Details Computer graphics dynamic control system Computer graphics dynamic control system

1989-05-01

1991-10-29

Weldon, Ulysses

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340724, 340299, G09G 106

Patent

active

050619195

ABSTRACT:
For a raster-scanned, video display apparatus, individual pixel display data is stored in a double image frame buffer. A valid count buffer then holds a count for each pixel. Current valid counts are stored, as at times of image buffer updating which updating includes storing display data changes and a fraction of the total display (background). At times of display, current counts from the count buffer are tested against valid counts as stored for each pixel in the valid count buffer to determine the selection of display data from the image frame buffer or alternate background data. A window frame buffer resolves the display into windows that are accommodated by the system with valid counts for each window.

REFERENCES:
patent: 4642790 (1987-02-01), Minshull et al.
patent: 4663617 (1987-05-01), Stockwell
patent: 4769762 (1988-09-01), Tsujido
patent: 4794386 (1988-12-01), Bedrij et al.
patent: 4954819 (1990-09-01), Watkins
patent: 4959803 (1990-09-01), Kiyohara et al.

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