Method and apparatus for generating timing pulses

Details Method and apparatus for generating timing pulses Method and apparatus for generating timing pulses

1983-09-28

1986-09-30

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358148, 358155, 358149, 328 63, 328119, 328139, 307269, 307518, 375 94, 375106, H04N 508

Patent

active

046149732

ABSTRACT:
Timing pulses are generated in response to an input signal which includes a train of nominally periodic pulses by determining whether a detected pulse of the input signal is a pulse of the train of nominally periodic pulses, employing a detected pulse of the pulse train to initiate cyclical production of pulses with a period dependent on the nominal period of the pulse train, and using the cyclically produced pulses to generate the desired timing pulses. In a gen-lock circuit, this arrangement facilitates acquiring lock to a noisy signal.

REFERENCES:
patent: 3727142 (1973-04-01), De Sipio et al.
patent: 4232267 (1980-11-01), Hanajima et al.

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