Remote control circuit for video cassette tape recorder

Details Remote control circuit for video cassette tape recorder Remote control circuit for video cassette tape recorder

1992-03-26

1994-09-27

Powell, Mark R.

Television

Receiver circuitry

Remote control

359146, H04N 544

Patent

active

053510968

ABSTRACT:
A remote control circuit for a system wherein several terminal units are operatively connected to a single main unit, enabling the main unit to be controlled by the terminal units. The remote control circuit includes a remote control receiving unit equipped in a TV system and adapted to receive and process a remote control signal from a remote control transmitter, and a TV control microprocessor adapted to analyze the remote control receiving unit so as to output a VCR remote control signal and TV control signal based on code information of the remote control signal. The VCR control signal is transmitted to a VCR system by a VCR control signal transmitter, via a radio frequency cable. The VCR control signal includes a control signal converter and a pulse width modulator. In the VCR system, original VCR control signal is recovered, by a band-pass filter and a rectifier. The VCR control signal is converted into code information, by an A/D converter, which code information is applied to a VCR control microprocessor, so as to control the VCR system.

REFERENCES:
patent: 4386436 (1983-05-01), Kocher et al.
patent: 4527204 (1985-07-01), Kozakai et al.
patent: 4817203 (1989-03-01), Tsurumoto et al.
patent: 5081534 (1992-01-01), Geiger et al.
patent: 5123046 (1992-06-01), Levine
patent: 5151789 (1992-09-01), Young

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