JPS5693196A - Error detecting system of checking circuit - Google Patents

Error detecting system of checking circuit

Info

Publication number
JPS5693196A
JPS5693196A JP17008679A JP17008679A JPS5693196A JP S5693196 A JPS5693196 A JP S5693196A JP 17008679 A JP17008679 A JP 17008679A JP 17008679 A JP17008679 A JP 17008679A JP S5693196 A JPS5693196 A JP S5693196A
Authority
JP
Japan
Prior art keywords
memory
checking circuit
gate
circuit
detecting system
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
JP17008679A
Other languages
Japanese (ja)
Inventor
Yutaka Kamiyanagi
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 JP17008679A priority Critical patent/JPS5693196A/en
Publication of JPS5693196A publication Critical patent/JPS5693196A/en
Pending legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To eliminate a redundant memory and then realize a detection for the circuits relating to error detection, by installing a prescribed by-pass circuit to the memory.
CONSTITUTION: The device is provided with the gate 14 to give a bypass to the data given from the writing register 6 to the memory 1 and the gate 15 to give a bypass to the code from the Hamming code generating circuit 5 to the memory 1, the inverter 18 which gives the ON/OFF control to the gates 14 and 15. Each gate is turned off in the normal operation mode and then turned on in the error detection diagnosis mode. As a result, the parity bit, the Hamming code and the data are transmitted to the parity checking circuit 8 and the Hamming checking circuit 9 with no intervention of the memory 1.
COPYRIGHT: (C)1981,JPO&Japio
JP17008679A 1979-12-26 1979-12-26 Error detecting system of checking circuit Pending JPS5693196A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17008679A JPS5693196A (en) 1979-12-26 1979-12-26 Error detecting system of checking circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17008679A JPS5693196A (en) 1979-12-26 1979-12-26 Error detecting system of checking circuit

Publications (1)

Publication Number Publication Date
JPS5693196A true JPS5693196A (en) 1981-07-28

Family

ID=15898378

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17008679A Pending JPS5693196A (en) 1979-12-26 1979-12-26 Error detecting system of checking circuit

Country Status (1)

Country Link
JP (1) JPS5693196A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011952A (en) * 1983-07-01 1985-01-22 Mitsubishi Electric Corp Semiconductor memory device with error correcting means
JPS60173647A (en) * 1984-02-17 1985-09-07 Fujitsu Ltd Detecting system of error generating part of information processing unit
JPH02148342A (en) * 1988-11-30 1990-06-07 Yokogawa Medical Syst Ltd Memory for look-up table

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6011952A (en) * 1983-07-01 1985-01-22 Mitsubishi Electric Corp Semiconductor memory device with error correcting means
JPS60173647A (en) * 1984-02-17 1985-09-07 Fujitsu Ltd Detecting system of error generating part of information processing unit
JPH0377546B2 (en) * 1984-02-17 1991-12-10 Fujitsu Ltd
JPH02148342A (en) * 1988-11-30 1990-06-07 Yokogawa Medical Syst Ltd Memory for look-up table

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