Disparity detection circuit for a 2-bit to 4-bit coded signal de

Details Disparity detection circuit for a 2-bit to 4-bit coded signal de Disparity detection circuit for a 2-bit to 4-bit coded signal de

1992-04-30

1994-02-01

Williams, Howard L.

Coded data generation or conversion

Digital code to digital code converters

To or from minimum d.c. level codes

371 571, 375 19, 36471509, H03M 700

Patent

active

052835766

ABSTRACT:
A disparity detection circuit used in a signal decoder which decodes a 4-bit signal into an original 2-bit main signal and 1-bit service signal, from which the 4-bit signal is coded according to a coding rule which stipulates that an original 2-bit main signal and 1-bit service signal should be coded into a 4-bit signal with 1 additional bit added and with pre-determined disparity carrying, determines whether the 4-bit signal conforms to the coding rule and detects the disparity of the 4-bit signal which is determined as conforming to the coding rule.

REFERENCES:
patent: 4499454 (1985-02-01), Shimada
patent: 4617552 (1986-10-01), Kojima et al.
patent: 5016258 (1991-05-01), Tanaka et al.
Telecommunications and Radio Engineering, vol. 40/41, Aug. 1986, No. 8 Washington US pp. 19-24.
D. G. Tunev `A Multilevel Code for Digital Transmission Systems`; p. 19, line 1-line 16; p. 21, line 4-p. 23, line 6.

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