JPS6449454A - Multidrop communication system - Google Patents
Multidrop communication systemInfo
- Publication number
- JPS6449454A JPS6449454A JP20694387A JP20694387A JPS6449454A JP S6449454 A JPS6449454 A JP S6449454A JP 20694387 A JP20694387 A JP 20694387A JP 20694387 A JP20694387 A JP 20694387A JP S6449454 A JPS6449454 A JP S6449454A
- Authority
- JP
- Japan
- Prior art keywords
- signal
- station
- terminal
- slave station
- turned
- 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
- Time-Division Multiplex Systems (AREA)
- Small-Scale Networks (AREA)
Abstract
PURPOSE:To perform multidrop communication, by calling the terminal of a slave station from the desired line of a master station by a polling system via a time divisional multiplexing device 30, and sending only a signal being synchronized with the frame bit of the corresponding terminal of a called slave station to the time divisional multiplexing device of the master station via an AND circuit. CONSTITUTION:The transmission side line of the master station A is branched to the slave stations B, C..., and as a reception side line, a digital dedicated line branch network to which information can be inserted via the AND circuits 10, 11,... is used, and the device 30 which performs the time divisional multiplexing of the information of a terminal at a multiplexing part 20 on the mastar station, and the multiplexing part 20 and terminal interface 21 of the time divisional multiplexing device 31 of each slave station set a frame format signal at all 1s when the control signal of the terminal is turned OFF, and send the frame format signal in synchronism with the frame bit when it is turned ON. The slave station called by the polling system sends a response signal when the control signal is turned ON, and the slave station not being called sends a signal of all 1s when the control signal is turned OFF, and only the response signal of the called slave station is inputted to the master station via the AND circuit.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20694387A JPS6449454A (en) | 1987-08-20 | 1987-08-20 | Multidrop communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP20694387A JPS6449454A (en) | 1987-08-20 | 1987-08-20 | Multidrop communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6449454A true JPS6449454A (en) | 1989-02-23 |
JPH0561823B2 JPH0561823B2 (en) | 1993-09-07 |
Family
ID=16531603
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP20694387A Granted JPS6449454A (en) | 1987-08-20 | 1987-08-20 | Multidrop communication system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6449454A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04115640A (en) * | 1990-08-31 | 1992-04-16 | Fujitsu Ltd | Signal transmitting system |
-
1987
- 1987-08-20 JP JP20694387A patent/JPS6449454A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04115640A (en) * | 1990-08-31 | 1992-04-16 | Fujitsu Ltd | Signal transmitting system |
Also Published As
Publication number | Publication date |
---|---|
JPH0561823B2 (en) | 1993-09-07 |
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