Method and device for detecting false locks between a reference

Details Method and device for detecting false locks between a reference Method and device for detecting false locks between a reference

1988-09-14

1989-07-11

Mis, David

Demodulators

Amplitude modulation demodulator

Having specific distortion, noise or other interference...

329 50, 329107, 329145, H03D 318, H03K 904

Patent

active

048475785

ABSTRACT:
In a method of detecting false locks between a reference signal and an input signal to be demodulated to produce a coherent demodulated signal comprising a number of phase states, the level of the input signal at a predetermined moment in the bit period of the input signal after demodulation and before regeneration is compared with the level of the input signal after regeneration, bit by bit. The reference signal is optionally corrected so as to lock its reference and phase to the input signal.

REFERENCES:
patent: 4514855 (1985-04-01), Lang et al.
patent: 4559499 (1985-12-01), Buisztein et al.

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