JPS57183153A - Multidrop signal transmitting system - Google Patents
Multidrop signal transmitting systemInfo
- Publication number
- JPS57183153A JPS57183153A JP6647781A JP6647781A JPS57183153A JP S57183153 A JPS57183153 A JP S57183153A JP 6647781 A JP6647781 A JP 6647781A JP 6647781 A JP6647781 A JP 6647781A JP S57183153 A JPS57183153 A JP S57183153A
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- address
- signal
- repeater
- answer signal
- 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]
- H04L12/42—Loop networks
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE:To prevent the lowering of reliability when a simple transmission line which has signal leakage by providing a means which gives each repeater a characteristic address and transfers only a data signal, coincident with said address, to a central processor. CONSTITUTION:An FS answer signal transmitted from a terminal equipment (unshown) to a center station through a simple transmission line is passed through a coupling circuit 26 and demodulated by an FS demodulating circuit 28, and an address discriminating circuit 29 performs address discrimination. When address coincidence is obtained, a timer circuit 31 is driven and a gate 32 is opened for a prescribed time (when said FS answer signal is allowed to pass). Therefore, the FS answer signal passes through this gate 32 and is shaped by a waveform shaping circuit 33 and then remodulated by an FS modulating circuit 34, whose output is transmitted to the 2nd repeater which has no call signal regenerating circuit part 20 through an amplifier 35 and a coupling circuit 21, thereby transferring the FS answer signal to the center station through this 2nd repeater.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6647781A JPS57183153A (en) | 1981-05-01 | 1981-05-01 | Multidrop signal transmitting system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6647781A JPS57183153A (en) | 1981-05-01 | 1981-05-01 | Multidrop signal transmitting system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57183153A true JPS57183153A (en) | 1982-11-11 |
JPH0258825B2 JPH0258825B2 (en) | 1990-12-10 |
Family
ID=13316892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6647781A Granted JPS57183153A (en) | 1981-05-01 | 1981-05-01 | Multidrop signal transmitting system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57183153A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04117145A (en) * | 1990-09-05 | 1992-04-17 | Kansai Electric Power Co Inc:The | Carrier signal transmission method on distribution line |
-
1981
- 1981-05-01 JP JP6647781A patent/JPS57183153A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH04117145A (en) * | 1990-09-05 | 1992-04-17 | Kansai Electric Power Co Inc:The | Carrier signal transmission method on distribution line |
Also Published As
Publication number | Publication date |
---|---|
JPH0258825B2 (en) | 1990-12-10 |
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