Device for correcting code error

Details Device for correcting code error Device for correcting code error

1993-06-21

1995-01-10

Atkinson, Charles E.

Excavating

371 371, G06F 1110, H03M 1300

Patent

active

053814223

ABSTRACT:
A device receives a code train including information codes and first and second error correction codes which were provided by using the information codes, and then corrects code errors of the information codes. A first correcting circuit corrects code errors of the information codes in accordance with the first error correction check code, and a second correcting circuit corrects code errors of the information codes in accordance with the second error correction check code by deciding whether uncorrectable code errors are present or not in each predetermined number of information codes and generating flag information. The flag information is amended using the first error correction check code, and code errors of the information codes are concealed on the basis of the amended flag information.

REFERENCES:
patent: 4653052 (1987-03-01), Dori et al.
patent: 4726028 (1988-02-01), Himeno
patent: 4750178 (1988-06-01), Sako et al.
patent: 4760576 (1988-07-01), Sako
patent: 4881232 (1989-11-01), Sako et al.
patent: 4975915 (1990-12-01), Sako et al.
patent: 5068855 (1991-11-01), Kashida et al.
patent: 5070503 (1991-12-01), Shikakura

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