Manchester code clock and data recovery system

Details Manchester code clock and data recovery system Manchester code clock and data recovery system

1988-02-16

1989-08-01

Griffin, Robert L.

Pulse or digital communications

Repeaters

Testing

375 81, 329124, H03D 304

Patent

active

048539430

ABSTRACT:
A Manchester code clock and data recovery system comprises an input means which receives an encoded input signal. Data integration and error integration devices are provided which receive modified versions of the input signal and produce signals for presentation to an error modulator. The modulator generates an error signal for controlling a phase lock loop circuit having a voltage controlled oscillator.
A first output of the oscillator generates signals for controlling the data integration device over a full bit period, and for controlling the error integration device over a half bit period, in a manner that permits the clock signal to be recovered from the first output of the oscillator, and the data to be recovered from the data integration device which is arranged to generate a Manchester biphase coded signal.

REFERENCES:
patent: 3626298 (1971-12-01), Anderson et al.
patent: 4130802 (1978-12-01), Nossen et al.

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