Phase lock recovery apparatus for phase locked loop circuit

Details Phase lock recovery apparatus for phase locked loop circuit Phase lock recovery apparatus for phase locked loop circuit

1989-01-27

1990-07-10

Grimm, Siegfried H.

Oscillators

Automatic frequency stabilization using a phase or frequency...

Search sweep of oscillator

329307, 331 17, 331DIG2, 375 81, 375120, H03L 712, H04L 2722

Patent

active

049409514

ABSTRACT:
A phase lock recovery apparatus for a phase locked loop circuit having a voltage controlled oscillator. The apparatus includes a detection circuit coupled to the phase locked loop circuit for detecting a phase unlocked state occurred in the phase locked loop circuit and a sweep signal generator responsive to the detection circuit for sweeping the frequency of the voltage controlled oscillator to come within the lock range of the frequency of the input signal when the phase unlocked state is detected.

REFERENCES:
patent: 3793594 (1974-02-01), Griswold
patent: 4316154 (1982-02-01), Krause
patent: 4388598 (1983-06-01), Egan
patent: 4527127 (1985-07-01), Brown
patent: 4713630 (1987-12-01), Matthews
patent: 4814719 (1989-03-01), Guyer
Patent Abstracts of Japan, vol. 12, No. 167 (E-610) to Daimon, published May 19, 1988.

Affiliated with

Also associated with

Rating

Phase lock recovery apparatus for phase locked loop circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Phase lock recovery apparatus for phase locked loop circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Phase lock recovery apparatus for phase locked loop circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1722930