Variable pulse tuning system

Details Variable pulse tuning system Variable pulse tuning system

1979-09-17

1981-06-02

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

455170, 455195, H04B 116

Patent

active

042715288

ABSTRACT:
A variable pulse rate tuning circuit for use with a channel-selecting system incorporating a single, shaft-encoded tuning knob. The circuit includes a single pulse circuit that generates an individual channel-stepping pulse in response to individual channel-changing pulses derived from the shaft-encoded tuning knob. In addition a pulse adding circuit sensitive to the repetition rate of the channel-changing pulses generates additional stepping pulses during conditions under which a substantial number of channels are sought to be bypassed. The pulse adding circuit includes an integrator to control the operation of a gated RC oscillator.

REFERENCES:
patent: 3671870 (1972-06-01), Wellhausen
patent: 3803495 (1974-04-01), Reynolds
patent: 3835384 (1974-09-01), Liff

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