Stable low cost 4.5 MHz remodulator

Details Stable low cost 4.5 MHz remodulator Stable low cost 4.5 MHz remodulator

1984-11-14

1986-12-30

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

455260, H04N 562

Patent

active

046333169

ABSTRACT:
A cable converter produces a 4.5 MHz intercarrier sound signal from a received television signal for application to one input of a phase lock loop circuit, the other input of which is supplied from a voltage controlled oscillator producing a regenerated 4.5 MHz intercarrier signal. The output of the phase lock loop is supplied through a loop filter to the input of the voltage controlled oscillator to control its frequency. The regenerated 4.5 MHz intercarrier signal is thus stabilized by the received 4.5 MHz intercarrier signal.

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