Self synchronizing automatic correlator

Details Self synchronizing automatic correlator Self synchronizing automatic correlator

1992-04-17

1995-04-25

Chin, Stephen

Pulse or digital communications

Synchronizers

Frequency or phase control using synchronizing signal

375343, 370107, H04L 700

Patent

active

054105706

ABSTRACT:
A self synchronizing automatic correlator, comprising apparatus for receiving an input data signal; apparatus for receiving a free running clock signal; a clock recovery circuit for comparing the input data signal and the free running clock signal and generating a phase error signal responsive thereto, and for frequency adjusting the clock signal by an amount equal to the phase error signal and in response generating a recovered clock signal synchronized to the input data signal; a shift register for receiving and storing the input data signal under control of the recovered clock signal; apparatus for storing a user data signal; and apparatus connected to the shift register and the apparatus for storing for comparing the input data signal and the user data signal and in the event of a match therebetween generating an output signal for indicating valid detection of the input data signal.

REFERENCES:
patent: 4817148 (1989-03-01), Lafferty et al.
patent: 5128998 (1992-07-01), Kurihara

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