Video and audio blanking system

Details Video and audio blanking system Video and audio blanking system

1983-07-08

1985-11-19

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358147, H04N 324, H04N 704

Patent

active

045545847

ABSTRACT:
An auxiliary circuit for remote control of television receiver blanking (audio and video) by digital code words transmitted as part of the video signal. The circuit detects and decodes the transmitted code and depending upon the code received, blanks either or both the audio and video signals in the receiver. A selector switch would be interconnected with the digital decoder to permit selection of particular code words which will cause the circuit to blank. The selector switch will normally be available for the television viewer to control. The transmitter for transmitting the digital code in the preferred configuration would comply with FCC Rules and Regulations specifying program related ASCII transmissions on line 21 of picture field 1.

REFERENCES:
patent: 3673318 (1972-06-01), Olsen et al.
patent: 3919462 (1975-11-01), Hartung et al.
patent: 4245245 (1981-01-01), Matsumoto et al.
patent: 4280139 (1981-07-01), Mogi et al.
patent: 4333110 (1982-06-01), Faerber et al.
patent: 4354201 (1982-10-01), Sechet et al.
patent: 4488179 (1984-12-01), Kruger et al.
Sears Model 57G 5400 N Television Receiver Schematic Diagram.

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