Television receiver having multiplexed phase lock loop tuning sy

Details Television receiver having multiplexed phase lock loop tuning sy Television receiver having multiplexed phase lock loop tuning sy

1979-10-15

1982-02-23

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455260, 455316, 331 2, 331 18, H04B 126

Patent

active

043172288

ABSTRACT:
A television receiver includes a frequency synthesizer phase lock loop operated in a time multiplexed manner to provide two tuning signals for tuning a received television signal. The two tuning signals are developed at the outputs of first and second voltage controlled local oscillators alternately operated in response to a phase detector which is reset at the beginning of each alternate operation.

REFERENCES:
patent: 3409836 (1968-11-01), Wallett
patent: 3927384 (1975-12-01), Jezo
patent: 4078212 (1978-03-01), Rast
patent: 4097816 (1978-06-01), Imazeki et al.
patent: 4123724 (1978-10-01), Das et al.
patent: 4127820 (1978-11-01), Beelitz et al.
patent: 4135157 (1979-01-01), Den Toonder

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