Signal generator for a graphic console

Details Signal generator for a graphic console Signal generator for a graphic console

1979-05-16

1981-08-25

Curtis, Marshall M.

Communications: electrical

Land vehicle alarms or indicators

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

340749, 340790, 340802, G06F 314

Patent

active

042862647

ABSTRACT:
A signal generator (20) for a graphic TV console equipped with an image memory (30); the generator generates a signal SYNC for synchronizing the TV scan, reading address signals for the image memory and timing signals for controlling an external graphic unit.
The generator includes a clock (21); a synchronous counter (22 and 23), logic means (24 and 25) enabling the signal SYNC and the luminance test signals to be generated, and a multiplexer (26) for multiplexing the read and write address signals associated with the image memory.
The invention may advantageously be used in information display systems, electronic games, etc.

REFERENCES:
patent: 3396377 (1968-08-01), Strout
patent: 3659283 (1972-04-01), Ophir
patent: 3729730 (1973-04-01), Sevilla et al.
patent: 3754228 (1973-08-01), Hwang et al.
patent: 3911420 (1975-10-01), Lampson

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