CMI decoder

Details CMI decoder CMI decoder

1988-04-14

1989-06-06

Safourek, Benedict V.

Pulse or digital communications

Repeaters

Testing

375 25, 375 49, 360 43, 341 73, H03M 714

Patent

active

048377821

ABSTRACT:
In a digital communication system, a CMI (Coded Mark Inversion) decoder for extracting an optimum sampling timing from a CMI coded input signal so as to NRZ (Non-Return to Zero) format the input signal. A circuit for producing clock signals which are individually deviated in phase by +1/4 and -1/4 of a period relative to a reference clock signal that is extracted from the input signal is constituted by a logic circuit.

REFERENCES:
patent: 3953673 (1976-04-01), Dorward
patent: 4071692 (1978-01-01), Weir et al.
patent: 4562422 (1985-12-01), Pospischil
patent: 4651328 (1987-03-01), den Hollander et al.

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