JPS5786972A - Doubled computer system - Google Patents

Doubled computer system

Info

Publication number
JPS5786972A
JPS5786972A JP55163050A JP16305080A JPS5786972A JP S5786972 A JPS5786972 A JP S5786972A JP 55163050 A JP55163050 A JP 55163050A JP 16305080 A JP16305080 A JP 16305080A JP S5786972 A JPS5786972 A JP S5786972A
Authority
JP
Japan
Prior art keywords
memory
computer
stand
actual operation
data
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
JP55163050A
Other languages
Japanese (ja)
Other versions
JPS6119061B2 (en
Inventor
Toshio Ogawa
So Akai
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Electric Corp
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Electric Corp, Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Electric Corp
Priority to JP55163050A priority Critical patent/JPS5786972A/en
Publication of JPS5786972A publication Critical patent/JPS5786972A/en
Publication of JPS6119061B2 publication Critical patent/JPS6119061B2/ja
Granted 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multi Processors (AREA)
  • Techniques For Improving Reliability Of Storages (AREA)
  • Hardware Redundancy (AREA)

Abstract

PURPOSE:To obtain a system wherein memory transfer between two computers is performed with excellent real-time characteristics and a means of diagnosing a memory transfer function by a computer at a stand-by side. CONSTITUTION:Two computers 1 and 2 using an input-output equipment in common and a doubling controller 3 controlling them by monitoring their operations are provided. When data utilized by either computer in common during actual operation is rewritten in the memory of the computer 1 in actual operation, the doubling controller 3 transfers the data to the memory of the computer 2 on a stand-by side. The computer 1 on the actual operation side updates specific data in its own memory 12 periodically in a prescribed way, and the stand-by side 2 discriminates the variation condition of corresponding specific data in its own memory 22.
JP55163050A 1980-11-19 1980-11-19 Doubled computer system Granted JPS5786972A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55163050A JPS5786972A (en) 1980-11-19 1980-11-19 Doubled computer system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55163050A JPS5786972A (en) 1980-11-19 1980-11-19 Doubled computer system

Publications (2)

Publication Number Publication Date
JPS5786972A true JPS5786972A (en) 1982-05-31
JPS6119061B2 JPS6119061B2 (en) 1986-05-15

Family

ID=15766214

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55163050A Granted JPS5786972A (en) 1980-11-19 1980-11-19 Doubled computer system

Country Status (1)

Country Link
JP (1) JPS5786972A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157643A (en) * 1984-01-26 1985-08-17 Yokogawa Hokushin Electric Corp Duplex structure computer
JPS6435634A (en) * 1987-07-31 1989-02-06 Fujitsu Ltd Fault recovery system for switcher of disk string
JPH01276243A (en) * 1988-04-27 1989-11-06 Yokogawa Electric Corp Duplication control system
JPH02132528A (en) * 1988-11-14 1990-05-22 Nec Corp Duplex processor
JPH02206844A (en) * 1989-02-06 1990-08-16 Hitachi Ltd Operation method for dual controller
JPH0371237A (en) * 1989-08-10 1991-03-27 Kyosan Electric Mfg Co Ltd Parallel double system processor and its operating method
JPH04142631A (en) * 1990-10-04 1992-05-15 Nec Corp Memory content taking over system
JPH07281917A (en) * 1994-04-13 1995-10-27 Nec Corp Cpu switchin circuit
JP2010181922A (en) * 2009-02-03 2010-08-19 Nec Corp Processor peripheral circuit

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60157643A (en) * 1984-01-26 1985-08-17 Yokogawa Hokushin Electric Corp Duplex structure computer
JPS6435634A (en) * 1987-07-31 1989-02-06 Fujitsu Ltd Fault recovery system for switcher of disk string
JPH01276243A (en) * 1988-04-27 1989-11-06 Yokogawa Electric Corp Duplication control system
JPH02132528A (en) * 1988-11-14 1990-05-22 Nec Corp Duplex processor
JPH02206844A (en) * 1989-02-06 1990-08-16 Hitachi Ltd Operation method for dual controller
JPH0371237A (en) * 1989-08-10 1991-03-27 Kyosan Electric Mfg Co Ltd Parallel double system processor and its operating method
JPH04142631A (en) * 1990-10-04 1992-05-15 Nec Corp Memory content taking over system
JPH07281917A (en) * 1994-04-13 1995-10-27 Nec Corp Cpu switchin circuit
JP2010181922A (en) * 2009-02-03 2010-08-19 Nec Corp Processor peripheral circuit

Also Published As

Publication number Publication date
JPS6119061B2 (en) 1986-05-15

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