Monitor interface architecture for black level transfer

Details Monitor interface architecture for black level transfer Monitor interface architecture for black level transfer

1994-07-28

1995-08-01

Brier, Jeffery

Computer graphics processing and selective visual display system

Data responsive crt display control

Data responsive intensity control

345 22, 345147, 345153, 348687, G09G 114, G09G 510

Patent

active

054383412

ABSTRACT:
A computer display device with digital RGB color signal lines, and horizontal and vertical synchronous signal lines. The controller comprising a means for taking out, from one of the digital RGB color signal lines which consists of an N bit digital signal, a black level signal defined as "0" or "1" in all N bits, and a means for adding the black level signal being taken out to either one of said horizontal and vertical synchronous signal lines. In addition to the controller, the present invention provides a display device including a means, provided within the display device, for extracting said black level signal from the synchronous signal with the black level signal being added, and a means for maintaining a black level potential of the display device at a predetermined value in response to the black level signal being extracted.

REFERENCES:
patent: 4382254 (1983-05-01), Ranalli

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