US Patent No: 5,243,604

Number of patents in Portfolio can not be more than 2000

On-the-fly error correction

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Abstract

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On-the-fly error correction is provided using syndromes of a codeword encoded on data storage media. First and second syndromes are generated and a variable prescaler prescales the second syndrome by a field element to produce a prescaled second syndrome where the field element is variable. The error value is determined based on the first syndrome, and the error location is determined based on a comparison between the error value and the value of the prescaled second syndrome. The error value located at the error location is then corrected.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
SEAGATE TECHNOLOGY LLCSCOTTS VALLEY, CA5638

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Johnson, Bruce E Bellevue, WA 51 814
Tsang, Kinhing P Plymouth, MN 26 206

Cited Art Landscape

Patent Info (Count) # Cites Year
 
COMMUNICATIONS SATELLITE CORPORATION (1)
4,397,022 Weighted erasure codec for the (24, 12) extended Golay code 71 1981
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
4,961,193 Extended errors correcting device having single package error correcting and double package error detecting codes 17 1988
 
Organisation Europeenne de Recherches Spatiales (1)
4,236,247 Apparatus for correcting multiple errors in data words read from a memory 13 1979
 
SEAGATE TECHNOLOGY, INC. (1)
4,890,287 On-the-fly error correction 22 1988
 
SONY CORPORATION (1)
4,569,051 Methods of correcting errors in binary data 10 1983
 
STUFF TECHNOLOGY PARTNERS II, LTD. (1)
4,633,471 Error detection and correction in an optical storage system 58 1983
 
UNISYS CORPORATION (1)
4,567,594 Reed-Solomon error detecting and correcting system employing pipelined processors 35 1983

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SEAGATE TECHNOLOGY LLC (3)
5,434,719 Correction of header information in a magnetic disc drive 25 1994
6,961,010 DC-free code design with increased distance between code words 4 2003
7,002,492 High rate running digital sum-restricted code 5 2004
 
CIRRUS LOGIC, INC. (2)
5,822,337 Programmable redundancy/syndrome generator 9 1995
5,761,220 Minimum latency asynchronous data path controller in a digital recording system 1 1997
 
HITACHI GLOBAL STORAGE TECHNOLOGIES JAPAN, LTD. (2)
6,452,736 Magnetic recording and reproducing apparatus and a read/write amplifier having a signal transmission system with high speed of data write signal 4 1995
6,700,721 Magnetic recording and reproducing apparatus and semiconductor integrated circuit for use in the same comprising a read/write signal processor having an interleave write data generator 1 2002
 
SAMSUNG ELECTRONICS CO., LTD. (1)
6,115,837 Dual-column syndrome generation for DVD error correction using an embedded DRAM 61 1998