JPS56105522A - Change-over device - Google Patents

Change-over device

Info

Publication number
JPS56105522A
JPS56105522A JP771780A JP771780A JPS56105522A JP S56105522 A JPS56105522 A JP S56105522A JP 771780 A JP771780 A JP 771780A JP 771780 A JP771780 A JP 771780A JP S56105522 A JPS56105522 A JP S56105522A
Authority
JP
Japan
Prior art keywords
group
signal
change
over
lower device
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
JP771780A
Other languages
Japanese (ja)
Inventor
Yasuo Kubo
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP771780A priority Critical patent/JPS56105522A/en
Publication of JPS56105522A publication Critical patent/JPS56105522A/en
Pending 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
    • G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
    • G06F11/16—Error detection or correction of the data by redundancy in hardware
    • G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Hardware Redundancy (AREA)

Abstract

PURPOSE:To improve the reliability and working efficiency of a data processing unit by changing over connection constitution to a device substituting the lower device of any one lower device when said one lower device is faulty in the change-over devices in a data processing unit. CONSTITUTION:When a processing unit 7 knows that a lower device 6-1a causes a fault via an upper device 5-1 in case a lower device 6-1b is connected as a substitute because the device 6-1a is faulty, this is announced to a discrete change-over instruction circuit 3 by a signal line (h). On receiving this, the circuit 3 outputs a discrete change-over instruction signal e-1. By the controlling of this signal e-1, a one-to-two change-over circuit 4-1 is operated, by which a signal group d-1 and a signal group f-1 are disconnected and the group d-1 and group g-1 are connected. Hence, the signal group b-1 and the group d-1 and group g-1 are connected, whereby the device 6-1b is connected to the device 5-1.
JP771780A 1980-01-28 1980-01-28 Change-over device Pending JPS56105522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP771780A JPS56105522A (en) 1980-01-28 1980-01-28 Change-over device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP771780A JPS56105522A (en) 1980-01-28 1980-01-28 Change-over device

Publications (1)

Publication Number Publication Date
JPS56105522A true JPS56105522A (en) 1981-08-22

Family

ID=11673480

Family Applications (1)

Application Number Title Priority Date Filing Date
JP771780A Pending JPS56105522A (en) 1980-01-28 1980-01-28 Change-over device

Country Status (1)

Country Link
JP (1) JPS56105522A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6272048A (en) * 1985-09-26 1987-04-02 Toshiba Corp Lsi for control circuit of automatic vending machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6272048A (en) * 1985-09-26 1987-04-02 Toshiba Corp Lsi for control circuit of automatic vending machine

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