JPS5487137A - Selection connecting system between units - Google Patents

Selection connecting system between units

Info

Publication number
JPS5487137A
JPS5487137A JP15512377A JP15512377A JPS5487137A JP S5487137 A JPS5487137 A JP S5487137A JP 15512377 A JP15512377 A JP 15512377A JP 15512377 A JP15512377 A JP 15512377A JP S5487137 A JPS5487137 A JP S5487137A
Authority
JP
Japan
Prior art keywords
circuit
connection
unit
selection
reception
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
JP15512377A
Other languages
Japanese (ja)
Other versions
JPS5723283B2 (en
Inventor
Taketoyo Sawada
Setsuo Kugimiya
Akio Hanada
Haruo Sugizaki
Takanori Aoki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP15512377A priority Critical patent/JPS5487137A/en
Publication of JPS5487137A publication Critical patent/JPS5487137A/en
Publication of JPS5723283B2 publication Critical patent/JPS5723283B2/ja
Granted legal-status Critical Current

Links

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  • Small-Scale Networks (AREA)
  • Hardware Redundancy (AREA)
  • Debugging And Monitoring (AREA)

Abstract

PURPOSE: To increase the system reliability and the maintenanceability, by the connection request reception circuit receiving only the connection request from the specific unit and enabling the connection with the common unit, when the priority selection and reception storage circuit receives the specific unit selection signal.
CONSTITUTION: The connection request and reception circuit 25 performs the connection and selection with the common unit B with the connection request signal from a plurality of units A1, A2... An, and the priority selection and reception storage circuit 26 receives and stores the signal selecting the unit specific from external. When the circuit 26 receives the specific unit selection signal, the circuit 25 receives only the connection request from the specific unit selected, enabling the connection with the unit B, and the storage condition of the reception and hold circuit is reset with the end of connection. Thus, by providing the means performing compulsive selection, the reliability of system and the maintenanceablity can be increased.
COPYRIGHT: (C)1979,JPO&Japio
JP15512377A 1977-12-23 1977-12-23 Selection connecting system between units Granted JPS5487137A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15512377A JPS5487137A (en) 1977-12-23 1977-12-23 Selection connecting system between units

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15512377A JPS5487137A (en) 1977-12-23 1977-12-23 Selection connecting system between units

Publications (2)

Publication Number Publication Date
JPS5487137A true JPS5487137A (en) 1979-07-11
JPS5723283B2 JPS5723283B2 (en) 1982-05-18

Family

ID=15599056

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15512377A Granted JPS5487137A (en) 1977-12-23 1977-12-23 Selection connecting system between units

Country Status (1)

Country Link
JP (1) JPS5487137A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267640A (en) * 1988-09-02 1990-03-07 Fujitsu Ltd Duplicated system for central processing unit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5058954A (en) * 1973-09-26 1975-05-22
JPS5284935A (en) * 1976-01-07 1977-07-14 Hitachi Ltd Data processing system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5058954A (en) * 1973-09-26 1975-05-22
JPS5284935A (en) * 1976-01-07 1977-07-14 Hitachi Ltd Data processing system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0267640A (en) * 1988-09-02 1990-03-07 Fujitsu Ltd Duplicated system for central processing unit

Also Published As

Publication number Publication date
JPS5723283B2 (en) 1982-05-18

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