Error correction encoder/decoder

Details Error correction encoder/decoder Error correction encoder/decoder

1987-06-17

1989-06-20

Shoop, Jr., William M.

Coded data generation or conversion

Digital code to digital code converters

With error detection or correction

341 51, 371 37, 371 38, 371 47, H03M 1300

Patent

active

048413003

ABSTRACT:
A separate operational section for determining the degree of a polynomial is provided to increase the process speed in determining both error locator and evaluator polynomials. When a received word is decoded based on the error location found, the received word is stored in a memory and corrected and output through the designation of the address. The formula ##EQU1## is derived from the error locator equation ##EQU2## and the value of which satisfies .sigma.(.alpha.)=0 is determined to increase the process speed. The decoder and the encoder share part of the hardware to make the system compact.

REFERENCES:
patent: 4142174 (1979-02-01), Chen et al.
patent: 4162480 (1979-07-01), Berlekamp
patent: 4389636 (1983-06-01), Riddle et al.
patent: 4567594 (1986-01-01), Deodhar
patent: 4580162 (1986-04-01), Mori
patent: 4605921 (1986-08-01), Riddle et al.
patent: 4649541 (1987-03-01), Lahmeyer

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