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JPS5667458A - Data error detecting system - Google Patents

Data error detecting system

Info

Publication number
JPS5667458A
JPS5667458A JP14462579A JP14462579A JPS5667458A JP S5667458 A JPS5667458 A JP S5667458A JP 14462579 A JP14462579 A JP 14462579A JP 14462579 A JP14462579 A JP 14462579A JP S5667458 A JPS5667458 A JP S5667458A
Authority
JP
Japan
Prior art keywords
data
sends
cpu4
circuit
via process
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
JP14462579A
Other languages
Japanese (ja)
Other versions
JPS6051136B2 (en
Inventor
Kohei Takeno
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP54144625A priority Critical patent/JPS6051136B2/en
Publication of JPS5667458A publication Critical patent/JPS5667458A/en
Publication of JPS6051136B2 publication Critical patent/JPS6051136B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Hardware Redundancy (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE: To shorten the error processing time of data by doubling the data input part of a device, by operating the both in parallel and by collating their outputs with each other.
CONSTITUTION: Data processors 1 and 2, having the same constitution, are supplied with (n) pieces of data D0WDn from processor 3. Either CPU4 normally reads data D0WDn via process input parts 5-1W5-n and, after performing required processing, sends only the data of device 1 by way of parallel-series converting circuit 8, modulator 10, switch 12, and circuit connection device 13. Simultaneously with the above-mentioned operation, abnormality detecting circuit 11 sends selective signals to input parts 5-1W5-n of devices 1 and 2 successively via process input part 7, reads selected data via process output device 6, and collates both data mutually and successively. As a result, when they disagree, circuit 11 sends a signal showing abnormality to CPU4. Then, CPU4 discards the data considered to be abnormal and, when it becomes evident that a fault is occurring to input parts 5-1W5-n, sends a command to device 13 to change over switch 12.
COPYRIGHT: (C)1981,JPO&Japio
JP54144625A 1979-11-07 1979-11-07 Data error detection method Expired JPS6051136B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54144625A JPS6051136B2 (en) 1979-11-07 1979-11-07 Data error detection method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54144625A JPS6051136B2 (en) 1979-11-07 1979-11-07 Data error detection method

Publications (2)

Publication Number Publication Date
JPS5667458A true JPS5667458A (en) 1981-06-06
JPS6051136B2 JPS6051136B2 (en) 1985-11-12

Family

ID=15366380

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54144625A Expired JPS6051136B2 (en) 1979-11-07 1979-11-07 Data error detection method

Country Status (1)

Country Link
JP (1) JPS6051136B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200950U (en) * 1981-06-17 1982-12-21
JP2002247142A (en) * 2001-02-15 2002-08-30 East Japan Railway Co Multiplex transmission system
US8755917B2 (en) 2007-11-07 2014-06-17 Mitsubishi Electric Corporation Safety control device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57200950U (en) * 1981-06-17 1982-12-21
JPS6312602Y2 (en) * 1981-06-17 1988-04-11
JP2002247142A (en) * 2001-02-15 2002-08-30 East Japan Railway Co Multiplex transmission system
US8755917B2 (en) 2007-11-07 2014-06-17 Mitsubishi Electric Corporation Safety control device

Also Published As

Publication number Publication date
JPS6051136B2 (en) 1985-11-12

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