JPS5583946A - Diagnosis system for data error detection/correction circuit - Google Patents

Diagnosis system for data error detection/correction circuit

Info

Publication number
JPS5583946A
JPS5583946A JP15794878A JP15794878A JPS5583946A JP S5583946 A JPS5583946 A JP S5583946A JP 15794878 A JP15794878 A JP 15794878A JP 15794878 A JP15794878 A JP 15794878A JP S5583946 A JPS5583946 A JP S5583946A
Authority
JP
Japan
Prior art keywords
circuit
check bit
correction
case
error detection
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
JP15794878A
Other languages
Japanese (ja)
Other versions
JPS6022771B2 (en
Inventor
Takashi Hiraoka
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP53157948A priority Critical patent/JPS6022771B2/en
Publication of JPS5583946A publication Critical patent/JPS5583946A/en
Publication of JPS6022771B2 publication Critical patent/JPS6022771B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Detection And Correction Of Errors (AREA)

Abstract

PURPOSE: To secure the individual test for the check bit generation means, the error detection means and correction means, and the memory each by selecting either the check bit given from the check bit generation circuit or the prescribed means in accordance with the diagnosis and normal modes and then giving the detection and correction to the error of the check bit and the reading data only in the case of the normal mode.
CONSTITUTION: The writing data is transferred to check bit generation circuit 6 and memory 2, and the check bit of circuit 6 is transferred to selection circuit 18. At the same time, the check bit is transferred to the circuit from data processor 1. In case diagnosis mode signal line 21 which selects either one of the both check bits features the normal mode, circuit 18 selects the check bit sent from circuit 6 and then transfers the check bit sent from register 16 to memory 2 in the case of the diagnosis mode. When error detection circuit 9 detects some error in the reading data and the check bit, the correction is given via correction circuit 10. And the correct data is sent to processor 1. While in case signal line 21 features the diagnosis mode, circuit 9 gives no detection.
COPYRIGHT: (C)1980,JPO&Japio
JP53157948A 1978-12-21 1978-12-21 Diagnosis method for data error detection and correction circuit Expired JPS6022771B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53157948A JPS6022771B2 (en) 1978-12-21 1978-12-21 Diagnosis method for data error detection and correction circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53157948A JPS6022771B2 (en) 1978-12-21 1978-12-21 Diagnosis method for data error detection and correction circuit

Publications (2)

Publication Number Publication Date
JPS5583946A true JPS5583946A (en) 1980-06-24
JPS6022771B2 JPS6022771B2 (en) 1985-06-04

Family

ID=15660958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53157948A Expired JPS6022771B2 (en) 1978-12-21 1978-12-21 Diagnosis method for data error detection and correction circuit

Country Status (1)

Country Link
JP (1) JPS6022771B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57146349A (en) * 1981-03-05 1982-09-09 Usac Electronics Ind Co Ltd Discriminating method of performance of check circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57146349A (en) * 1981-03-05 1982-09-09 Usac Electronics Ind Co Ltd Discriminating method of performance of check circuit

Also Published As

Publication number Publication date
JPS6022771B2 (en) 1985-06-04

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