JPS56129953A - Failure detection system - Google Patents

Failure detection system

Info

Publication number
JPS56129953A
JPS56129953A JP3158380A JP3158380A JPS56129953A JP S56129953 A JPS56129953 A JP S56129953A JP 3158380 A JP3158380 A JP 3158380A JP 3158380 A JP3158380 A JP 3158380A JP S56129953 A JPS56129953 A JP S56129953A
Authority
JP
Japan
Prior art keywords
bit
odd
error detection
error
circuit
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
JP3158380A
Other languages
Japanese (ja)
Inventor
Hiroyuki Mizuno
Masato Yamagishi
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP3158380A priority Critical patent/JPS56129953A/en
Publication of JPS56129953A publication Critical patent/JPS56129953A/en
Pending 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)
  • Detection And Correction Of Errors (AREA)

Abstract

PURPOSE:To enable to detect the failure in error detection circuit with less hardware, by comparing the result of comparison of even and odd number bit for redundant bit with the result of error detection, in the device performing error detection and correction with redundant bit. CONSTITUTION:The even and odd parity bit DP to data 32-bit is output at a data even and odd judging circuit 11, and the redundant bit even and odd judging circuit 12 outputs the even and odd number parity bit CP to the even and odd parity bit to the humming code 7-bit, the comparison circuit 13 makes the comparison for the both to take exclusive logical sum between the coincidence signal outputted and the error absence signal outputted from the error detection circuit 1, to output failure signal. Thus, the failure in the error detection circuit at error absence and one bit error can be detected with very less hardware.
JP3158380A 1980-03-14 1980-03-14 Failure detection system Pending JPS56129953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3158380A JPS56129953A (en) 1980-03-14 1980-03-14 Failure detection system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3158380A JPS56129953A (en) 1980-03-14 1980-03-14 Failure detection system

Publications (1)

Publication Number Publication Date
JPS56129953A true JPS56129953A (en) 1981-10-12

Family

ID=12335202

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3158380A Pending JPS56129953A (en) 1980-03-14 1980-03-14 Failure detection system

Country Status (1)

Country Link
JP (1) JPS56129953A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63115239A (en) * 1986-10-27 1988-05-19 インタ−ナショナル・ビジネス・マシ−ンズ・コ−ポレ−ション Error inspection/correction circuit
JPS63180136A (en) * 1987-01-12 1988-07-25 シーゲイト　テクノロジー　インターナショナル Data errors corrector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63115239A (en) * 1986-10-27 1988-05-19 インタ−ナショナル・ビジネス・マシ−ンズ・コ−ポレ−ション Error inspection/correction circuit
JPS63180136A (en) * 1987-01-12 1988-07-25 シーゲイト　テクノロジー　インターナショナル Data errors corrector

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