Bit synchronizer for decoding data

Details Bit synchronizer for decoding data Bit synchronizer for decoding data

1985-05-28

1987-01-06

Griffin, Robert L.

Pulse or digital communications

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375 94, 328155, 360 48, H03D 324

Patent

active

046352805

ABSTRACT:
A bit synchronizer for Miller-encoded data includes a phase-locked loop for synchronizing the Miller-encoded data to the clock signal necessary for proper decoding thereof. The phase-locked loop includes a monostable multivibrator that is triggered on each transition of the Miller-encoded data. The monostable multivibrator controls the operation of two flip-flops that produce time-varying signals when the clock is leading or lagging the Miller-encoded data. The flip-flop output signals are constant when the clock is in phase with the Miller-encoded data. The flip-flop output signals are integrated, and the resultant signal controls a voltage-controlled oscillator so that the clock signal is phase coherent with the Miller-encoded data signal.

REFERENCES:
patent: 4005479 (1977-01-01), Hunnicutt et al.
patent: 4065796 (1977-12-01), Dehart
patent: 4124778 (1978-11-01), Amass
patent: 4204199 (1980-05-01), Isailovic
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patent: 4307381 (1981-12-01), Isailovic
patent: 4371974 (1983-02-01), Dugan
patent: 4380815 (1983-04-01), Clendening
patent: 4400667 (1983-08-01), Belkin
patent: 4414659 (1983-11-01), Beckers
patent: 4419699 (1983-12-01), Christopher et al.

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