Phase locked loop circuit and reproducing apparatus

Details Phase locked loop circuit and reproducing apparatus Phase locked loop circuit and reproducing apparatus

1998-03-06

1999-08-17

Mis, David

Oscillators

Automatic frequency stabilization using a phase or frequency...

Plural a.f.s. for a single oscillator

331 14, 331 17, 331 25, 360 51, H03L 7087, H03L 710

Patent

active

059399481

ABSTRACT:
A phase locked loop circuit for absorbing characteristic variations of phase comparator components beforehand in adjusting mode. With the variations thus adjusted and co-opted, any intrinsic error of the phase comparator is prevented from appearing as a phase difference upon transition from adjusting mode to normal operation mode. The scheme inhibits lock range deviations or capture range variations in normal operation mode, permitting a stable phase locked loop function.

REFERENCES:
patent: 4918404 (1990-04-01), Vitiello et al.
patent: 5265081 (1993-11-01), Shimizume et al.
patent: 5334954 (1994-08-01), Koblitz et al.
patent: 5530389 (1996-06-01), Rieder
patent: 5841323 (1998-11-01), Fujimoto

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