JPS6444151A - Communication control system - Google Patents
Communication control systemInfo
- Publication number
- JPS6444151A JPS6444151A JP62201224A JP20122487A JPS6444151A JP S6444151 A JPS6444151 A JP S6444151A JP 62201224 A JP62201224 A JP 62201224A JP 20122487 A JP20122487 A JP 20122487A JP S6444151 A JPS6444151 A JP S6444151A
- Authority
- JP
- Japan
- Prior art keywords
- communication controller
- monopolization
- communication
- request signal
- controller
- 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
Links
Landscapes
- Small-Scale Networks (AREA)
- Communication Control (AREA)
Abstract
PURPOSE:To prevent disabled communication of other communication controller due to a fault of a communication controller by providing a means allowing other communication controller to release monopolization when a communication controller monopolies one communication line. CONSTITUTION:Let suppose that a communication controller 21 requests the monopolization of a communication line 1 and communicates a communication controller 22, the the communication controller 22 monitors the interval of a sent message and when the interval of message is larger than a prescribed time T or over, a monopoly acknowledge signal 6 is sent to the communication controller 21. When the monopolization still continues, the communication controller 21 returns a monopolization request signal 7 to the communication controller 22. On the other hand, when the communication controller 21 does not return the monopolization request signal 7 due to a fault or the like, the communication controller 22 release the monopolization of the communication controller 21 on the condition of unreceived monopolization request signal 7.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62201224A JPS6444151A (en) | 1987-08-12 | 1987-08-12 | Communication control system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62201224A JPS6444151A (en) | 1987-08-12 | 1987-08-12 | Communication control system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6444151A true JPS6444151A (en) | 1989-02-16 |
Family
ID=16437393
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62201224A Pending JPS6444151A (en) | 1987-08-12 | 1987-08-12 | Communication control system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6444151A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5431873A (en) * | 1977-08-17 | 1979-03-08 | Hitachi Ltd | Multiple controller |
JPS593642U (en) * | 1982-06-29 | 1984-01-11 | ラツクス株式会社 | Voltage supply circuit in frequency synthesizer receiver |
JPS6215951A (en) * | 1985-07-15 | 1987-01-24 | Canon Inc | Network system |
JPS62136144A (en) * | 1985-12-10 | 1987-06-19 | Matsushita Electric Ind Co Ltd | Home bus line acquisition and supervising system |
-
1987
- 1987-08-12 JP JP62201224A patent/JPS6444151A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5431873A (en) * | 1977-08-17 | 1979-03-08 | Hitachi Ltd | Multiple controller |
JPS593642U (en) * | 1982-06-29 | 1984-01-11 | ラツクス株式会社 | Voltage supply circuit in frequency synthesizer receiver |
JPS6215951A (en) * | 1985-07-15 | 1987-01-24 | Canon Inc | Network system |
JPS62136144A (en) * | 1985-12-10 | 1987-06-19 | Matsushita Electric Ind Co Ltd | Home bus line acquisition and supervising system |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB2325320A (en) | Fast access to a shared resource on a computer bus | |
JPS5427741A (en) | Information processing organization | |
JPS57141158A (en) | Communication control system | |
JPS6444151A (en) | Communication control system | |
JPS5322209A (en) | Simplex ground devi ce for automatic train control | |
JPS57131149A (en) | Storage type data transfer system | |
JPS55147851A (en) | Communication controlling system | |
JPS57190441A (en) | Terminal controlling system | |
JPS57174726A (en) | Data transfer controlling system | |
JPS5573158A (en) | Polling control system | |
JPS5639653A (en) | Multiple terminal control system | |
JPS5787256A (en) | Subsystem diagnostic system | |
JPS57183154A (en) | Multispeed transmission system | |
JPS53125715A (en) | Terminal control system | |
JPS5696346A (en) | Supervisory and control system of multisystem | |
JPS528794A (en) | Switching system for direction indicator | |
JPS5392640A (en) | Queue control system | |
JPS55136749A (en) | Data signal conversion system | |
JPS6461149A (en) | Overload control system for packet exchange | |
JPS57131148A (en) | Storage type data transfer system | |
JPS5612154A (en) | Answer signal transmission system | |
JPS56112157A (en) | Controlling method for channel assignment in loop communication system | |
JPS56145442A (en) | Multicomputer source controlling system | |
JPS57193154A (en) | Common controlling system for transmission line | |
JPS5613856A (en) | Signal transmitting system |