CMI encoder circuit

Details CMI encoder circuit CMI encoder circuit

1991-03-25

1992-05-12

Pellinen, A. D.

Coded data generation or conversion

Digital code to digital code converters

To or from nrz codes

341 94, H03M 514

Patent

active

051131870

ABSTRACT:
A circuit having a completely synchronous and digital implementation for encoding a stream of digital data (NRZ form) into the coded marked inversion (CMI) format. The circuit includes a state machine having a predetermined number of defined legal and illegal states, an illegal state detection circuit, and an output circuit. When the state machine enters an illegal state because of, for example, the effects of noise or distortion on the digital data signal, the illegal state detection circuit forces the state machine back into a legal state.

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patent: 4189621 (1980-02-01), Scott
patent: 4442528 (1984-04-01), Fukuda
patent: 4556868 (1985-12-01), Harle
patent: 4562422 (1985-12-01), Pospischil
patent: 4728929 (1988-03-01), Tanaka
patent: 4761635 (1988-08-01), Arnaune
patent: 4783786 (1988-11-01), Tsukakoshi
patent: 4873524 (1989-10-01), Akkermans
patent: 4876615 (1989-10-01), Chikashige

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