Timing signal generating system and receiving circuit for...

Details Timing signal generating system and receiving circuit for... Timing signal generating system and receiving circuit for...

2007-10-16

2007-10-16

Payne, David C. (Department: 2611)

Pulse or digital communications

Synchronizers

Phase displacement, slip or jitter correction

C375S354000, C375S371000, C714S012000

Reexamination Certificate

active

10077875

ABSTRACT:
A timing signal generating system has a clock signal generating circuit, a synchronizing circuit, a phase code recognizing circuit, and a calibration circuit. The clock signal generating circuit generates at least one first clock signal upon receipt of at least one reference clock signal by controlling an output phase thereof with a digital code signal. The synchronizing circuit hands over signals between a group of circuits operated by the first clock signal and an internal circuit operated by a second clock signal. The phase code recognizing circuit recognizes a phase code when the phases of the first clock signal and of the second clock signal are in a particular relationship. The calibration circuit calibrates a relationship between a value of the recognized phase code and a phase difference between the first and second clock signals. The synchronizing circuit is controlled by using phase code data calibrated by the calibration circuit.

REFERENCES:
patent: 5479457 (1995-12-01), Waters
patent: 5613235 (1997-03-01), Kivari et al.
patent: 5731723 (1998-03-01), Chen
patent: 6148052 (2000-11-01), Bogdan
patent: 6292040 (2001-09-01), Iwamoto et al.
patent: 6606351 (2003-08-01), Dapper et al.
patent: 2002/0196885 (2002-12-01), Kim et al.
patent: 2005/0231291 (2005-10-01), Dally et al.

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