Timing error detection circuit, demodulation circuit and...

Details Timing error detection circuit, demodulation circuit and... Timing error detection circuit, demodulation circuit and...

2006-02-07

2006-02-07

Chin, Stephen (Department: 2634)

Pulse or digital communications

Receivers

Angle modulation

C375S354000, C375S355000, C375S227000, C375S293000, C348S537000, C348S607000, C329S304000

Reexamination Certificate

active

06996193

ABSTRACT:
A timing error detection circuit capable of detecting a timing error of symbols in a signal with a simple and small-sized configuration, comprising a sampling circuit for sampling a signal including symbols arranged at a predetermined symbol cycle at a frequency equal to four times of a symbol rate, an amplitude detection circuit for detecting an amplitude of a position subjected to said sampling in said signal, a difference detection circuit for detecting a timing error indicating deviation of the symbol included in the signal from a conceivable timing based on difference of said detected plurality of amplitudes, and a timing error signal generation circuit.

REFERENCES:
patent: 5122758 (1992-06-01), Tomita
patent: RE34206 (1993-03-01), Sayar
patent: 5235622 (1993-08-01), Yoshida
patent: 5243630 (1993-09-01), Rhebergen
patent: 5343502 (1994-08-01), Sato
patent: 6097444 (2000-08-01), Nakano
patent: 6583822 (2003-06-01), Jun
patent: 6587503 (2003-07-01), Takeuchi et al.
patent: 10-229423 (1998-08-01), None
JP-03-188736(Abstract Only); Hideho T.; Timing Extraction System;Aug. 1991.
JP 10-229423 (English Language Translation); Fujimura et al.; Timing Regeneration Circuit and Demodulator using the same.

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