Clock generator and phase comparator for use in such a clock gen

Details Clock generator and phase comparator for use in such a clock gen Clock generator and phase comparator for use in such a clock gen

1994-12-09

1999-03-02

Ton, My-Trang Nu

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

327160, 327161, H03L 706

Patent

active

058776419

ABSTRACT:
A clock generator contains a reference oscillator (10), a digital closed delay chain (12), a digital frequency divider (14) and a digital phase comparator (16). The frequency divider (14) is connected between the output of the adjustable delay chain (12) and one input of the phase comparator (16). The output of the reference oscillator (10) is connected to a further input of the phase comparator (16). Between the output of the phase comparator (16) and the delay chain (12) a digital up-down counter (18) is connected, the counting direction of which is determined by the output signal of the phase comparator (16) and by means of which the corresponding length of the delay chain (12) is adjustable.

REFERENCES:
patent: 4517532 (1985-05-01), Neidorff
patent: 5012198 (1991-04-01), Okada et al.
patent: 5075640 (1991-12-01), Miyazawa
patent: 5095287 (1992-03-01), Irwin et al.
patent: 5173617 (1992-12-01), Alsup et al.
patent: 5202906 (1993-04-01), Saito et al.
patent: 5218314 (1993-06-01), Efedovich et al.
patent: 5331294 (1994-07-01), Watanabe et al.
patent: 5355037 (1994-10-01), Andersen et al.
patent: 5428309 (1995-06-01), Uamauchi et al.

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