Telegraphy – Systems – Printing
Patent
1975-01-20
1976-02-24
Murray, Richard
Telegraphy
Systems
Printing
178DIG15, 179 1SW, 179 1VL, 325393, 343228, H04B 116
Patent
active
039407012
ABSTRACT:
A television remote control device responsive to illumination by a light beam for muting the audio output of a television receiver and automatically disabling the receiver a predetermined period following the muting thereof. A photo-responsive circuit generates a first set of control signals in response to the illumination of a portion thereof by a light beam. An audio control circuit mutes the audio output of the television immediately in response to the first signals, and a time-delay circuit responsive to the photo-responsive circuit generates a disabling signal a predetermined period following the generation of the first signals. A power control circuit disables the television by disconnecting its electrical input power in response to the disabling signal. A reset circuit is provided for manually turning the television on thereafter. If the photo-responsive circuit is illuminated a second time prior to the end of the aforementioned predetermined time period, a second set of control signals is generated which restores the audio output to its original amplitude and inhibits the generation of a disabling signal by the time-delay circuit. The various circuits may be of either electro-mechanical or electronic design, and the device may be included as original equipment or as a separate accessory to a television receiver.
REFERENCES:
patent: 2903575 (1959-09-01), Polley
patent: 3116454 (1963-12-01), Morris
patent: 3294901 (1966-12-01), Stanghi
patent: 3424865 (1969-01-01), Marchand
patent: 3537012 (1970-10-01), Reichard et al.
patent: 3713028 (1973-01-01), Boyd et al.
patent: 3870956 (1975-03-01), Wolff
Bookbinder Marc E.
Murray Richard
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