Phase locked loop circuit

Details Phase locked loop circuit Phase locked loop circuit

1993-01-27

1997-05-13

Chin, Wellington

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

331 17, 331 16, 331 25, 375327, H03L 706, H03L 716, H03L 718

Patent

active

056299621

ABSTRACT:
A phase locked loop circuit comprises a divider which is changed in a dividing ratio in compliance with a control signal applied thereto, the output of the divider is phase-compared with an input signal of the phase locked loop circuit. A phase-compared output is applied to a low pass filter to obtain a direct current component, and an oscillator is controlled by the direct current component.

REFERENCES:
patent: 4597019 (1986-06-01), Nishimoto
patent: 4729024 (1988-03-01), Kawai et al.
patent: 4812783 (1989-03-01), Honjo et al.
patent: 5019907 (1991-05-01), Murakoshi et al.
patent: 5068731 (1991-11-01), Takeuchi
patent: 5079526 (1992-01-01), Heck
patent: 5097219 (1992-03-01), Itoh
patent: 5168360 (1992-12-01), Maeshima
patent: 5206726 (1993-04-01), Okuda
Patent Abstract of Japan, vol. 14 No. 139 (E-903) Mar. 1990 re JP-A 2004087.
Patent Abstract of Japan, Vo. 16 No. 112 (E-119) Mar. 1992 re JP-A 3284062.

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