Error detector for modified duobinary signals

Details Error detector for modified duobinary signals Error detector for modified duobinary signals

1976-11-15

1978-04-25

Atkinson, Charles E.

Communications: electrical

Digital comparator systems

325 41, G06F 1100

Patent

active

040865665

ABSTRACT:
A modified duobinary signal is separated into two (odd and even) pulse trains, each of which is representative of a bipolar pulse train. Each representative bipolar pulse train has a bit rate one-half that of the modified duobinary signal. Violations of the modified duobinary coding rules appear as violation of the bipolar coding rules. The bipolar violations which occur are detected separately for the odd and even pulse trains. The detected errors are read into an error combiner and are read out serially at the original modified duobinary bit rate.

REFERENCES:
patent: 3337864 (1967-08-01), Lender
patent: 3343125 (1967-09-01), Lender
patent: 3418631 (1968-12-01), Sipress et al.
patent: 3461426 (1969-08-01), Lender

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