VGA controller circuitry

Details VGA controller circuitry VGA controller circuitry

1993-11-05

1996-12-03

Weldon, Ulysses

Computer graphics processing and selective visual display system

Display peripheral interface input device

Light pen for fluid matrix display panel

395507, G09G 536

Patent

active

055812791

ABSTRACT:
The "chip set" of a graphics adapter interface card is reduced to a monolithic integrated circuit that includes a programmable analog clock circuit for producing a video memory clock and a video dot clock. A digital graphics adapter controller is responsive to the video memory clock and the video dot clock to produce a video information stream. A random-access memory is responsive to the video information stream to produce a video display information stream, and a digital-to-analog converter is responsive to the video display information stream to convert the video display information stream to analog signals for application to a video display device.

REFERENCES:
patent: 4626839 (1986-12-01), O'Malley
patent: 4633441 (1986-12-01), Ishimoto
patent: 4727363 (1988-02-01), Ishii
patent: 4811007 (1989-03-01), Schreiber
patent: 4811240 (1989-03-01), Ballou et al.
patent: 4851892 (1989-07-01), Anderson et al.
patent: 4858175 (1989-08-01), Sato
patent: 4894646 (1990-01-01), Ryman
patent: 4918436 (1990-04-01), Johary
patent: 4978633 (1990-12-01), Seefeldt et al.
patent: 5036216 (1991-07-01), Hohmann et al.
patent: 5039884 (1991-08-01), Hara
patent: 5043713 (1991-08-01), Katsura et al.
patent: 5063429 (1991-11-01), Crafts
patent: 5095280 (1992-03-01), Wunner et al.
patent: 5105179 (1992-04-01), Smith
patent: 5345554 (1994-09-01), Lippincott et al.
"PEGA2" User's Guide, pp. 2-61, 1986.
"Brooktree" pp. 1.2, (4.7)-(4.13) and (4.57)-(4.63), 1991.
"Brooktree" 1989.
"inmos" Nov. 1988.
Acumos VGA Video Controller AVGA1 data sheet, Sep. 6, 1990.

Affiliated with

Also associated with

Rating

VGA controller circuitry does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with VGA controller circuitry, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and VGA controller circuitry will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-789024