Auxiliary control unit for a television receiver

Telecommunications – Receiver or analog modulated signal frequency converter – Signal selection based on frequency

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455 4, 455186, 455343, 358190, H04B 116

Patent

active

046513426

ABSTRACT:
Auxiliary control apparatus for an electronically controlled television receiver is coupled to the conductors between the keyboard and the control unit of the receiver to simulate user initiated power on and initial channel or other input source selection commands when AC line power is initially applied to the receiver. To cause this, the auxiliary control unit is responsive to the initial development of standby operating power by a standby power supply. Operating power for the auxiliary control unit is derived by drawing current from pull-up resistors connected to the conductors between the keyboard and the control unit. The auxiliary control apparatus is useful for use with institutional receivers which are to be turned on by the application of AC line power through a central control station and which are set to tune a predetermined channel or select another predetermined input signal source when turned on.

REFERENCES:
patent: 3602822 (1971-08-01), Evans et al.
patent: 4162513 (1979-07-01), Beyers, Jr. et al.
patent: 4227259 (1980-10-01), Mogi
patent: 4271532 (1981-06-01), Wine
patent: 4281349 (1981-07-01), George
patent: 4457021 (1984-06-01), Belisomi
patent: 4523295 (1985-06-01), Zato
Pages 3-40, 3-41, 3-42, 3-43, 3-46 and 3-47 from the JVC Service Manual for the Model HR-765OU Color Video Cassette Recorder, No. 8216-B, published by the Victor Company of Japan, Ltd., in 1982.
"RCA Television Service Data Chassis CTC 91 Series", file 1978 C-3.
"RCA Television Service Data Chassis CTC 111 Series", file 1981 C-3 and file 1981 C-3-S1.

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