Digital frequency lock tuning system

Details Digital frequency lock tuning system Digital frequency lock tuning system

1979-02-08

1984-10-09

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455184, 455185, H04B 116

Patent

active

044765843

ABSTRACT:
A tuning system for use in radio frequency multi-signal receiving systems, e.g a CATV converter, utilizes a closed feedback loop digital arrangement for channel selection (local oscillator frequency control) and channel fine tuning. The system may be implemented either via discrete hardware or through the use of microprocessor controlled apparatus.

REFERENCES:
patent: 3961266 (1976-06-01), Tanaka
patent: 4085372 (1978-04-01), Mogi et al.
patent: 4110695 (1978-08-01), Klank et al.
patent: 4114100 (1978-09-01), Klank
patent: 4152654 (1979-05-01), Tanaka

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