Crystal-less communications device and self-calibrated clock...

Details Crystal-less communications device and self-calibrated clock... Crystal-less communications device and self-calibrated clock...

2011-04-12

2011-04-12

Kinkead, Arnold (Department: 2817)

Oscillators

With frequency calibration or testing

C331S17700V, C329S307000, C329S325000, C329S360000, C332S125000, C332S126000, C332S127000

Reexamination Certificate

active

07924100

ABSTRACT:
A communication device uses a local clock generator to regenerate the carrier frequency of the reference signal from a remote communication. In particular, a closed loop is used to self-calibrate the local pulse till the frequency is fixed to be within a fixed frequency margin. Once the local pulse is obtained, the demodulator will use the local pulse to demodulate the reference signal to generate the data signal.

REFERENCES:
patent: 3961261 (1976-06-01), Pflasterer
patent: 5493710 (1996-02-01), Takahara et al.
patent: 5646935 (1997-07-01), Ishikawa et al.
patent: 2005/0105595 (2005-05-01), Martin et al.
patent: 2005/0281356 (2005-12-01), Kim
patent: 2006/0158259 (2006-07-01), Ishizaka et al.
patent: 2007/0026831 (2007-02-01), Jaffe et al.

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