JPS5487137A - Selection connecting system between units - Google Patents
Selection connecting system between unitsInfo
- 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
Links
Landscapes
- 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
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)
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)
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 |
-
1977
- 1977-12-23 JP JP15512377A patent/JPS5487137A/en active Granted
Patent Citations (2)
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)
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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