JPS5577256A - Transmission control system on multi-drop system - Google Patents
Transmission control system on multi-drop systemInfo
- Publication number
- JPS5577256A JPS5577256A JP15002778A JP15002778A JPS5577256A JP S5577256 A JPS5577256 A JP S5577256A JP 15002778 A JP15002778 A JP 15002778A JP 15002778 A JP15002778 A JP 15002778A JP S5577256 A JPS5577256 A JP S5577256A
- Authority
- JP
- Japan
- Prior art keywords
- station
- terminal
- center station
- information block
- response
- 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
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/403—Bus networks with centralised control, e.g. polling
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Bus Control (AREA)
- Small-Scale Networks (AREA)
Abstract
PURPOSE:To improve emergency responsiveness by performing synchronous polling by a center station as to all terminal stations belonging to the center station, and then by making response to only terminal stations in a queue for transferring data to the center station. CONSTITUTION:Transmission controller 11 of center station 1 edits an information block indicating interruption sense polling and then sends it to transmission line 31. To the address area of the information block, lowermost-order terminal station 2N-n is assigned. This information block is received and temporarily stored in terminal station 2N, and also resent to transmission line 31. Through repeated operation mentioned above, reception is continued up to terminal station 2N-n. Terminal station 2N-n edits response data and then sends it to receiving line 32. In other terminal stations 2, change-over switches 26 are changed over and information blocks to center station 1 are editd when there are data to be transferred to center station 1 at this time. Once this information block is sent out to line 32, a block in normal response from lower-order terminal station 2 is cut off, but is transferred only when there is no interruption response of higher-order terminal station 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15002778A JPS5577256A (en) | 1978-12-06 | 1978-12-06 | Transmission control system on multi-drop system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15002778A JPS5577256A (en) | 1978-12-06 | 1978-12-06 | Transmission control system on multi-drop system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5577256A true JPS5577256A (en) | 1980-06-10 |
JPS5751305B2 JPS5751305B2 (en) | 1982-11-01 |
Family
ID=15487887
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15002778A Granted JPS5577256A (en) | 1978-12-06 | 1978-12-06 | Transmission control system on multi-drop system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5577256A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05235954A (en) * | 1992-02-24 | 1993-09-10 | Nec Corp | Network information retrieval system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50110503A (en) * | 1974-02-06 | 1975-08-30 | ||
JPS51110902A (en) * | 1975-03-25 | 1976-09-30 | Mitsubishi Electric Corp | HOORINGUHOSHIKI |
JPS5336114A (en) * | 1976-09-16 | 1978-04-04 | Fujitsu Ltd | Data transmitting-receiving system |
-
1978
- 1978-12-06 JP JP15002778A patent/JPS5577256A/en active Granted
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS50110503A (en) * | 1974-02-06 | 1975-08-30 | ||
JPS51110902A (en) * | 1975-03-25 | 1976-09-30 | Mitsubishi Electric Corp | HOORINGUHOSHIKI |
JPS5336114A (en) * | 1976-09-16 | 1978-04-04 | Fujitsu Ltd | Data transmitting-receiving system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05235954A (en) * | 1992-02-24 | 1993-09-10 | Nec Corp | Network information retrieval system |
Also Published As
Publication number | Publication date |
---|---|
JPS5751305B2 (en) | 1982-11-01 |
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