Semiconductor device capable of accurately producing...

Details Semiconductor device capable of accurately producing... Semiconductor device capable of accurately producing...

2005-02-22

2005-02-22

Nguyen, Minh (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Synchronizing

C327S296000, C331S002000

Reexamination Certificate

active

06859079

ABSTRACT:
An operation control signal for an oscillator producing an internal clock signal phase-locked with a basic clock signal is applied to a second internal clock generating circuit. In the second internal clock generating circuit, with reference to the applied operation control signal, a control signal adjusting a phase and/or frequency difference between a synchronization target signal and a second internal clock signal is produced to adjust a phase and/or frequency of the second internal clock signal. A plurality of internal clock signals different in phase and/or frequency can be generated accurately and stably.

REFERENCES:
patent: 4633193 (1986-12-01), Scordo
patent: 5072195 (1991-12-01), Graham et al.
patent: 5422604 (1995-06-01), Jokura
patent: 5566204 (1996-10-01), Kardontchik et al.
patent: 5610558 (1997-03-01), Mittel et al.
patent: 5646562 (1997-07-01), Abe
patent: 6150887 (2000-11-01), Yamaguchi
patent: 63-087019 (1988-04-01), None

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