JPS5757346A - Checking system of error correcting circuit - Google Patents

Checking system of error correcting circuit

Info

Publication number
JPS5757346A
JPS5757346A JP55132564A JP13256480A JPS5757346A JP S5757346 A JPS5757346 A JP S5757346A JP 55132564 A JP55132564 A JP 55132564A JP 13256480 A JP13256480 A JP 13256480A JP S5757346 A JPS5757346 A JP S5757346A
Authority
JP
Japan
Prior art keywords
register
circuit
error correcting
generator
error
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.)
Granted
Application number
JP55132564A
Other languages
Japanese (ja)
Other versions
JPS5924458B2 (en
Inventor
Misoo Fujino
Minoru Etsuno
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 JP55132564A priority Critical patent/JPS5924458B2/en
Publication of JPS5757346A publication Critical patent/JPS5757346A/en
Publication of JPS5924458B2 publication Critical patent/JPS5924458B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F11/00—Error detection; Error correction; Monitoring
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
    • G06F11/10—Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Correction Of Errors (AREA)

Abstract

PURPOSE:To check the working fault of an error correcting circuit, by obtaining an exclusive OR among a check bit part of the read data, the output of a syndrome generator and the output of a check bit generator, respectively. CONSTITUTION:The data read out of a memory and a check bit (CB) are set to a register RRO and supplied to a syndrome generator 2 to produce a syndrome (SD). The SD is set to a register S, and the CB of the RRO is set to an RR1. An error detecting circuit 5 analyzes the contents of the register S and sets the error information to a register E. When a correctable error is detected by the circuit 5, a signal is sent to an error correcting circuit 6. The data part of the RRO is set to a register WR1 through a merging circuit 4 and a CB generator 1. An exclusive OR is obtained through an EOR3 among the CB of a WR1, the SD bit of the register S and the CB of the RR1, and this result is set to the register E. As a result, the action can be confirmed for the generators 1 and 2.
JP55132564A 1980-09-24 1980-09-24 Error correction circuit check method Expired JPS5924458B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55132564A JPS5924458B2 (en) 1980-09-24 1980-09-24 Error correction circuit check method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55132564A JPS5924458B2 (en) 1980-09-24 1980-09-24 Error correction circuit check method

Publications (2)

Publication Number Publication Date
JPS5757346A true JPS5757346A (en) 1982-04-06
JPS5924458B2 JPS5924458B2 (en) 1984-06-09

Family

ID=15084244

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55132564A Expired JPS5924458B2 (en) 1980-09-24 1980-09-24 Error correction circuit check method

Country Status (1)

Country Link
JP (1) JPS5924458B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197124A (en) * 1987-01-29 1988-08-16 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Error test system
JPH0461027U (en) * 1990-10-03 1992-05-26
US8966984B2 (en) 2007-06-21 2015-03-03 Vallourec Tubes France Method and apparatus for the manual non-destructive testing of tubular axle shafts with variable internal and external radius profiles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63197124A (en) * 1987-01-29 1988-08-16 インターナシヨナル・ビジネス・マシーンズ・コーポレーシヨン Error test system
JPH0328094B2 (en) * 1987-01-29 1991-04-18 Intaanashonaru Bijinesu Mashiinzu Corp
JPH0461027U (en) * 1990-10-03 1992-05-26
US8966984B2 (en) 2007-06-21 2015-03-03 Vallourec Tubes France Method and apparatus for the manual non-destructive testing of tubular axle shafts with variable internal and external radius profiles

Also Published As

Publication number Publication date
JPS5924458B2 (en) 1984-06-09

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