Television receiver for direct broadcast satellite signals

Details Television receiver for direct broadcast satellite signals Television receiver for direct broadcast satellite signals

1985-10-31

1987-05-19

Chin, Tommy P.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

455141, 455183, 455338, H04N 550, H04N 718, H04B 126

Patent

active

046672435

ABSTRACT:
A television (TV) receiving system includes a first TV receiver for receiving TV signals in a first range of frequencies, such as are used for cable, VHF and UHF broadcasting including a frequency synthesizer type local oscillator. The frequency synthesizer uses a voltage controlled oscillator (VCO) controlled by a tuning voltage responsive to a first frequency feedback signal. The receiver includes a coupling arrangement for adapting the receiving system for use with an external plug-in unit including a second TV receiver for receiving TV signals in a second range of frequencies, such as are used for direct broadcast satellite (DBS) signals. The second TV receiver provides a second frequency feedback signal. The receiving system includes a multiplexer for selectively coupling one of the first and second frequency feedback signals to the frequency synthesizer for controlling the VCO.

REFERENCES:
patent: 2691724 (1954-10-01), Hoffman
patent: 3348152 (1967-10-01), Laughlin
patent: 3810038 (1974-05-01), Hershberg
patent: 4031549 (1977-06-01), Rast et al.
patent: 4070628 (1978-01-01), Funabashi
patent: 4131851 (1978-12-01), Martiny et al.
patent: 4302778 (1981-11-01), Tanaka
patent: 4357632 (1982-11-01), French
patent: 4406017 (1983-09-01), Takahashi
patent: 4509210 (1985-04-01), Kohn
patent: 4518993 (1985-05-01), Okada
patent: 4538175 (1985-08-01), Balbes et al.

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