JPS559261A - Error correction unit - Google Patents

Error correction unit

Info

Publication number
JPS559261A
JPS559261A JP8132278A JP8132278A JPS559261A JP S559261 A JPS559261 A JP S559261A JP 8132278 A JP8132278 A JP 8132278A JP 8132278 A JP8132278 A JP 8132278A JP S559261 A JPS559261 A JP S559261A
Authority
JP
Japan
Prior art keywords
bytes
error
data
check
error correction
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
JP8132278A
Other languages
Japanese (ja)
Inventor
Toshihiko Sato
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric Co 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP8132278A priority Critical patent/JPS559261A/en
Publication of JPS559261A publication Critical patent/JPS559261A/en
Pending legal-status Critical Current

Links

Landscapes

  • Detection And Correction Of Errors (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Error Detection And Correction (AREA)

Abstract

PURPOSE: To correct all the errors for one byte among two data bytes and check bytes in total one group each, in the data bytes classified into the first and second groups even with three check bytes.
CONSTITUTION: The coded matrix HA using SbBEC(Single b bit Burst Error Correcting) code consists of I, "ro"(Japanese:katakana,256D), and A0, A1,...Ak-1, as shown in Figure. They are respectively identity element, null element and 2b-1 sets of non-null element in Galois field (2b). The data bytes D0, D1... are separated into the first group block A and the second group block B, and three check bytes C0, C1 and C2 are added to them and stored in the memory unit. If no error is present in the outputted data, the syndrome S0=S1=S2="ro"(Japanese:katakana,256D), and the error correction for two bytes is made corresponding to the error of one byte in the blocks A and B, and check bytes C0 to C2 by means of the syndrome calculation.
COPYRIGHT: (C)1980,JPO&Japio
JP8132278A 1978-07-03 1978-07-03 Error correction unit Pending JPS559261A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8132278A JPS559261A (en) 1978-07-03 1978-07-03 Error correction unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8132278A JPS559261A (en) 1978-07-03 1978-07-03 Error correction unit

Publications (1)

Publication Number Publication Date
JPS559261A true JPS559261A (en) 1980-01-23

Family

ID=13743155

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8132278A Pending JPS559261A (en) 1978-07-03 1978-07-03 Error correction unit

Country Status (1)

Country Link
JP (1) JPS559261A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60145814A (en) * 1984-01-05 1985-08-01 Mitsubishi Motors Corp Method of molding mark for positioning at time when hose is fitted

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60145814A (en) * 1984-01-05 1985-08-01 Mitsubishi Motors Corp Method of molding mark for positioning at time when hose is fitted

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