Modulator-remodulator with common local oscilator

Details Modulator-remodulator with common local oscilator Modulator-remodulator with common local oscilator

1990-04-10

1991-09-24

Groody, James J.

Telecommunications

Interference signal transmission

380 7, H04N 7167

Patent

active

050520474

ABSTRACT:
A channel converter system includes a local oscillator for converting an input RF television channel frequency signal to an intermediate frequency and for remodulating the intermediate frequency signal to produce a channel output signal at the same frequency. Video processing is accomplished between the input converter and the output remodulator. For baseband decoding, another oscillator demodulates the intermediate frequency signal and remodulates the processed video signal to the intermediate frequency signal.

REFERENCES:
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patent: 4771456 (1988-09-01), Martin et al.
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patent: 4837820 (1989-06-01), Bellavia, Jr.
patent: 4841569 (1989-06-01), Wachob
patent: 4860379 (1989-08-01), Schoeneberger et al.
patent: 4864613 (1989-09-01), Van Cleave
patent: 4912760 (1990-03-01), West, Jr. et al.
patent: 4914695 (1990-04-01), Martin

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