JPS5235957A - Control unit selecting system - Google Patents

Control unit selecting system

Info

Publication number
JPS5235957A
JPS5235957A JP50111919A JP11191975A JPS5235957A JP S5235957 A JPS5235957 A JP S5235957A JP 50111919 A JP50111919 A JP 50111919A JP 11191975 A JP11191975 A JP 11191975A JP S5235957 A JPS5235957 A JP S5235957A
Authority
JP
Japan
Prior art keywords
control unit
unit selecting
selecting system
cpu
hierarchy
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
JP50111919A
Other languages
Japanese (ja)
Other versions
JPS561649B2 (en
Inventor
Seishichi Kishi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP50111919A priority Critical patent/JPS5235957A/en
Publication of JPS5235957A publication Critical patent/JPS5235957A/en
Publication of JPS561649B2 publication Critical patent/JPS561649B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Hardware Redundancy (AREA)
  • Safety Devices In Control Systems (AREA)

Abstract

PURPOSE: To enable the system highly reliable easily by realizing the configuration of redundancy every hierarchy of control unit easily by means of selecting the control unit with abnormal operation detecting signal sent to CPU without receiving the changeover instructions from CPU.
COPYRIGHT: (C)1977,JPO&Japio
JP50111919A 1975-09-16 1975-09-16 Control unit selecting system Granted JPS5235957A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP50111919A JPS5235957A (en) 1975-09-16 1975-09-16 Control unit selecting system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50111919A JPS5235957A (en) 1975-09-16 1975-09-16 Control unit selecting system

Publications (2)

Publication Number Publication Date
JPS5235957A true JPS5235957A (en) 1977-03-18
JPS561649B2 JPS561649B2 (en) 1981-01-14

Family

ID=14573392

Family Applications (1)

Application Number Title Priority Date Filing Date
JP50111919A Granted JPS5235957A (en) 1975-09-16 1975-09-16 Control unit selecting system

Country Status (1)

Country Link
JP (1) JPS5235957A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921814A (en) * 1972-06-24 1974-02-26
JPS4921571A (en) * 1972-04-28 1974-02-26
JPS5227232A (en) * 1975-08-26 1977-03-01 Nippon Telegr & Teleph Corp <Ntt> State control system of bus select circuit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4921571A (en) * 1972-04-28 1974-02-26
JPS4921814A (en) * 1972-06-24 1974-02-26
JPS5227232A (en) * 1975-08-26 1977-03-01 Nippon Telegr & Teleph Corp <Ntt> State control system of bus select circuit

Also Published As

Publication number Publication date
JPS561649B2 (en) 1981-01-14

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