JPS5559558A - Data backup method - Google Patents

Data backup method

Info

Publication number
JPS5559558A
JPS5559558A JP13254378A JP13254378A JPS5559558A JP S5559558 A JPS5559558 A JP S5559558A JP 13254378 A JP13254378 A JP 13254378A JP 13254378 A JP13254378 A JP 13254378A JP S5559558 A JPS5559558 A JP S5559558A
Authority
JP
Japan
Prior art keywords
backup
data
area
control
end flag
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
JP13254378A
Other languages
Japanese (ja)
Inventor
Hiroichi Yamamoto
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 JP13254378A priority Critical patent/JPS5559558A/en
Publication of JPS5559558A publication Critical patent/JPS5559558A/en
Pending legal-status Critical Current

Links

Landscapes

  • Techniques For Improving Reliability Of Storages (AREA)
  • Hardware Redundancy (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

PURPOSE: To prevent effectively the control trouble in the transient state of backup by providing the backup end flag to the data table of the control unit and thus securing the assured detection for the end of the backup transmission.
CONSTITUTION: When the data contents of control units 2W4 are backed up by higher-rank computer 1, the backup end flag is provided at the final plus 1st area of the data table of the control unit. The transmission of the backup data is started from the 1st to the subsequent orders of the table in sequence, and the fixed data to be stored in the area for the backup end flag is transmitted at the 1st of the backup data transmitted from the higher order. When the fixed data is written into all bits of the area, the end of the backup is decided. Thus no fault is caused to the control.
COPYRIGHT: (C)1980,JPO&Japio
JP13254378A 1978-10-30 1978-10-30 Data backup method Pending JPS5559558A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13254378A JPS5559558A (en) 1978-10-30 1978-10-30 Data backup method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13254378A JPS5559558A (en) 1978-10-30 1978-10-30 Data backup method

Publications (1)

Publication Number Publication Date
JPS5559558A true JPS5559558A (en) 1980-05-06

Family

ID=15083731

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13254378A Pending JPS5559558A (en) 1978-10-30 1978-10-30 Data backup method

Country Status (1)

Country Link
JP (1) JPS5559558A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001958A1 (en) * 1980-11-28 1982-06-10 Kinoshita Mitsuo Data rewriting system for bubble memory
JPS60198992A (en) * 1984-03-23 1985-10-08 Tamura Electric Works Ltd Power failure countermeasure system for key telephone set
JPH03234130A (en) * 1990-02-08 1991-10-18 Nec Corp Channel management system

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001958A1 (en) * 1980-11-28 1982-06-10 Kinoshita Mitsuo Data rewriting system for bubble memory
US4493083A (en) * 1980-11-28 1985-01-08 Fanuc Ltd. System for updating data in bubble memories
EP0067227B1 (en) * 1980-11-28 1988-03-16 Fanuc Ltd. Data rewriting method for bubble memory
JPS60198992A (en) * 1984-03-23 1985-10-08 Tamura Electric Works Ltd Power failure countermeasure system for key telephone set
JPH03234130A (en) * 1990-02-08 1991-10-18 Nec Corp Channel management system

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