Clock recovery circuit for Manchester encoded data

Details Clock recovery circuit for Manchester encoded data Clock recovery circuit for Manchester encoded data

1991-12-04

1993-09-14

Kuntz, Curtis

Pulse or digital communications

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375118, 328 63, 328139, 307269, H04L 702

Patent

active

052456358

ABSTRACT:
An input data stream (a manchester encoded data stream which includes a clock signal component and has some jitter) is inputted to a clock extractor for extracting the clock signal component, the clock signal component having missing clock pulses. A delay line oscillator provides the missing clock pulses and outputs a recovered clock signal. The recovered clock signal has a first delay time as a result of inherent delays in the delay line oscillator and the clock extractor. A latch element receives the recovered clock signal and the input data stream, the input data stream being delayed a second delay time, the first delay time and the second delay time being essentially the same. The latch element reclocks the input data stream thereby removing a maximum amount of jitter and removes any distortion of the input data stream.

REFERENCES:
patent: 4542420 (1985-09-01), Kozlik et al.
patent: 4592072 (1986-05-01), Stewart
patent: 4688232 (1987-08-01), Fox
patent: 5046073 (1991-09-01), Sexton

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