Phase-locked loops

Details Phase-locked loops Phase-locked loops

1976-12-13

1978-01-17

Kominski, John

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural a.f.s. for a single oscillator

331 14, H03B 304

Patent

active

040694623

ABSTRACT:
A phase synchronizing system having a dual mode of operation for use, for example, with "modified frequency modulation" (MFM) encoded signals wherein captive range is assured by providing a first frequency locking mode of operation wherein a voltage controlled oscillator (VCO) is first locked in frequency to a reference signal and a second phase locking mode of operation wherein the VCO is subsequently locked in phase to an MFM signal independently of the frequency assumed by the latter signal.

REFERENCES:
patent: 3277378 (1966-10-01), Heaton-Armstrong
patent: 3825855 (1974-07-01), Basset et al.

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