Viewing distance sensor for television receiver

Details Viewing distance sensor for television receiver Viewing distance sensor for television receiver

1987-11-06

1989-05-16

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358108, 358113, 358245, 340555, 367 93, 367 95, 455604, H04N 500, H04N 900

Patent

active

048314480

ABSTRACT:
A viewing distance sensor for television receiver which cannot influence the remote infra-red control function over other electronic equipment positioned in the vicinity of a television receiver and also cannot be influenced by the infra-red signals transmitted from other electronic equipment. An infra-red signal is transmitted from the infra-red signal transmitter where a viewer is positioned within a viewable distance from the front of television receiver, whereby false operation caused by the infra-red signal from other equipment can be avoided. Also, an inhibiting control signal is applied to the screen controller of a television set where infra-red signals transmitted from other electronic equipments are received by the infra-red receiver in the television receiver, whereby false operation of the viewing distance sensor can be further avoided.

REFERENCES:
patent: 4417278 (1983-11-01), Hensleigh
patent: 4716469 (1987-12-01), Kim

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