Phase-coherent demodulation clock and data recovery

Details Phase-coherent demodulation clock and data recovery Phase-coherent demodulation clock and data recovery

1986-06-17

1987-09-15

Laroche, Eugene R.

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329110, 375 82, H03D 318

Patent

active

046942572

ABSTRACT:
A circuit and method for demodulation of transmitted phase-coherent signals including recovery of the clock and data signals associated therewith. A clock recovery circuit detects a zero crossing of the transmitted signal which occurs every one-half period of the lowest frequency transmitted signal. A data recovery circuit detects the presence or absence of a zero crossing during a window portion of each one-half period of the lowest frequency transmitted signal.

REFERENCES:
patent: 4592072 (1986-05-01), Stewart
patent: 4628271 (1986-12-01), Takayama

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