Synchronizing carrier frequencies of co-channel...

Details Synchronizing carrier frequencies of co-channel... Synchronizing carrier frequencies of co-channel...

2007-05-15

2007-05-15

Vo, Don N. (Department: 2611)

Pulse or digital communications

Synchronizers

Network synchronizing more than two stations

C375S371000

Reexamination Certificate

active

10304338

ABSTRACT:
Systems and methods are described for carrier-frequency synchronization for improved AM and TV broadcast reception. A method includes synchronizing a carrier frequency of a broadcast signal with a remote reference frequency. An apparatus includes a reference signal receiver; a phase comparator coupled to the reference signal receiver; a voltage controlled oscillator coupled to the phase comparator; and a radio frequency output coupled to the voltage controlled oscillator.

REFERENCES:
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patent: 5133081 (1992-07-01), Mayo
patent: 5216717 (1993-06-01), Bourcet et al.
patent: 6178194 (2001-01-01), Vasic
patent: 6212397 (2001-04-01), Langston et al.
PCT International Search Report date mailed Sep. 18, 2002.

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