Circuit arrangement for generating a synchronizable sawtooth vol

Details Circuit arrangement for generating a synchronizable sawtooth vol Circuit arrangement for generating a synchronizable sawtooth vol

1980-07-07

1983-05-17

Masinick, Michael A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358148, 307228, H04N 504

Patent

active

043843050

ABSTRACT:
A sawtooth voltage oscillator synchronizable by synchronizing pulses, a capacitor being charged and discharged, respectively, between two threshold values. The free-running frequency of the oscillator is switchable under the influence of a synchronizing signal detector which establishes the frequency of the synchronizing signal.

REFERENCES:
patent: 4071776 (1978-01-01), Isham
patent: 4134082 (1979-01-01), Fernsler
patent: 4241265 (1980-12-01), Ahmed
patent: 4253116 (1981-02-01), Rodgers
patent: 4284906 (1981-08-01), Manfredi
patent: 4319276 (1982-03-01), Cense

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