Power saving intermittently operated phase locked loop

Details Power saving intermittently operated phase locked loop Power saving intermittently operated phase locked loop

1986-10-23

1988-05-10

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Afc with logic elements

331 14, 331 17, 331 25, 331 27, 307516, 455343, H03L 718

Patent

active

047438649

ABSTRACT:
In an intermittently operative phase-locked loop, in order to prevent the oscillator frequency from significantly changing at the time of turning on of an electric power source, a point in time at which a phase difference between clock signals respectively fed to a reference frequency divider and to a frequency divider for dividing the output frequency of a voltage-controlled oscillator becomes substantially zero is detected, and the two frequency dividers are initialized when the above-mentioned point in time is detected after turning on of the electric power source.

REFERENCES:
patent: 4625180 (1986-11-01), Itaya et al.

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