Video system with television receiver and teletext processor cap

Details Video system with television receiver and teletext processor cap Video system with television receiver and teletext processor cap

1985-07-25

1987-06-30

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358147, 340721, H04N 5262

Patent

active

046774882

ABSTRACT:
A video system includes a TV receiver, a TTX processor, and a microprocessor control for controlling the functions thereof. The TTX processor includes an RGB switch unit supplied with RGB signals from a shift register in the TTX processor and from an external source of RGB signals. A video coder unit includes RGB switch means for selectively supplying RGB signals from the TTX processor and from the TV receiver and a switch for selectively coupling a timing signal from the TV receiver and the external source. The RGB switch unit in the TTX processor has a TTX address and all switching is controlled by the microprocess.

REFERENCES:
patent: 4020501 (1977-04-01), Hillberger et al.
patent: 4218698 (1980-08-01), Bart et al.
patent: 4393404 (1983-07-01), Cox et al.
patent: 4471377 (1984-09-01), Mogi et al.
patent: 4488179 (1984-12-01), Kruger et al.
patent: 4507683 (1985-03-01), Griesshaber
patent: 4575259 (1986-03-01), Griepentrog et al.
patent: 4600918 (1976-07-01), Belisomi et al.

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