Excavating
Patent
1990-07-11
1993-09-21
Beausoliel, Jr., Robert W.
Excavating
371 32, 371 681, 371 691, G06F 1110
Patent
active
052475239
ABSTRACT:
A product code block generated by adding an outer code block and an inner code block to digital information signal arranged in matrix is received at least twice by a code error correction apparatus. In decoding the first received product code block by use of an inner code parity, an error flag is set for an inner code block having an uncorrectable error by an inner code parity. In decoding the second received product code block by use of an inner code parity, the error flag is referrenced so that an inner code block that could be correctly decoded or corrected in the second decoding of all the inner code blocks having an uncorrectable error in the first decoding is replaced by the second inner code block. Also, the check information such as a check sum is generated and stored each time of receiving, and an error flag is set for even an inner code block that could be corrected in either the first or second decoding, if the check sums for them fail to coincide with each other.
REFERENCES:
patent: 3646518 (1972-02-01), Weinstein
patent: 4471485 (1984-09-01), Prevot et al.
patent: 4675870 (1987-06-01), Baggen
patent: 4939731 (1990-07-01), Reed et al.
patent: 4943964 (1990-07-01), Hatanaka et al.
patent: 4956641 (1990-09-01), Matai et al.
patent: 5010553 (1991-04-01), Scheller et al.
patent: 5027356 (1991-06-01), Nakamura et al.
Arai Hideo
Inoue Yasuyuki
Nishimura Keizo
Beausoliel, Jr. Robert W.
Hitachi , Ltd.
Hua Ly V.
LandOfFree
Code error correction apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Code error correction apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Code error correction apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1056000