JPS57152599A - Error correcting device - Google Patents

Error correcting device

Info

Publication number
JPS57152599A
JPS57152599A JP56038281A JP3828181A JPS57152599A JP S57152599 A JPS57152599 A JP S57152599A JP 56038281 A JP56038281 A JP 56038281A JP 3828181 A JP3828181 A JP 3828181A JP S57152599 A JPS57152599 A JP S57152599A
Authority
JP
Japan
Prior art keywords
data
check code
lsis
section
code
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56038281A
Other languages
Japanese (ja)
Inventor
Yukio Taniyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujitsu Ltd
Original Assignee
Fujitsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP56038281A priority Critical patent/JPS57152599A/en
Publication of JPS57152599A publication Critical patent/JPS57152599A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/13—Linear codes
    • H03M13/19—Single error correction without using particular properties of the cyclic codes, e.g. Hamming codes, extended or generalised Hamming codes

Landscapes

  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Detection And Correction Of Errors (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)

Abstract

PURPOSE:To obtain an ECC circuit with LSIs having the same configuration and to reduce the number of pins, by installing plural LSIs having a Hamming code producing matrix with a bit array whose data corresponding section is made to point symmetry, a check bit generating section, and data correcting section. CONSTITUTION:Plural LSIs for error correcting code ECC circuit having a Hamming code producing matrix with a bit array whose data corresponding section MD is central point symmetry, a check code generating section which produces a product which produces module ''2'' of data D0-D7 given from an input terminal and comparison check code C0-C4, and a correcting section which makes corrections on data responding to a half of bit array of the matrix in accordance with the output of the check code generating section and given data, are installed. Then, a check code to be added to the written data is obtained by adding the written data and a comparison check code having all bit contents of 0 (zero) to one LSI 15. Corrections on the whole bits of the data are performed in such a way that the read out data from a memory 16 and a check code to be added to the read out data are added to a pair of LSIs 17, 18 after the centrally symmetrical bit array is converted.
JP56038281A 1981-03-17 1981-03-17 Error correcting device Pending JPS57152599A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56038281A JPS57152599A (en) 1981-03-17 1981-03-17 Error correcting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56038281A JPS57152599A (en) 1981-03-17 1981-03-17 Error correcting device

Publications (1)

Publication Number Publication Date
JPS57152599A true JPS57152599A (en) 1982-09-20

Family

ID=12520926

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56038281A Pending JPS57152599A (en) 1981-03-17 1981-03-17 Error correcting device

Country Status (1)

Country Link
JP (1) JPS57152599A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500758A (en) * 1985-07-01 1987-03-26 バロ−ス・コ−ポレ−シヨン IC chip error detection and correction device and method with automatic self-diagnosis of chip operation
JPH02126730A (en) * 1988-11-07 1990-05-15 Fujitsu Ltd Hamming encoder
JPH1011307A (en) * 1996-06-27 1998-01-16 Nec Corp Main storage device
JP2003106779A (en) * 2001-09-27 2003-04-09 Nippon Steel Corp Cooling device and cooling method of reduced iron agglomerated product
US7543220B2 (en) 2005-03-17 2009-06-02 Fujitsu Limited Control method for error detection & correction apparatus, error detection & correction apparatus, and computer-readable storage medium storing control program for error detection & correction apparatus
JP2011184801A (en) * 2011-05-27 2011-09-22 Nippon Steel Engineering Co Ltd Cooling device for reduced iron agglomerate

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62500758A (en) * 1985-07-01 1987-03-26 バロ−ス・コ−ポレ−シヨン IC chip error detection and correction device and method with automatic self-diagnosis of chip operation
JPH02126730A (en) * 1988-11-07 1990-05-15 Fujitsu Ltd Hamming encoder
JPH1011307A (en) * 1996-06-27 1998-01-16 Nec Corp Main storage device
JP2003106779A (en) * 2001-09-27 2003-04-09 Nippon Steel Corp Cooling device and cooling method of reduced iron agglomerated product
US7543220B2 (en) 2005-03-17 2009-06-02 Fujitsu Limited Control method for error detection & correction apparatus, error detection & correction apparatus, and computer-readable storage medium storing control program for error detection & correction apparatus
JP2011184801A (en) * 2011-05-27 2011-09-22 Nippon Steel Engineering Co Ltd Cooling device for reduced iron agglomerate

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