JPS5654534A - Switching control circuit - Google Patents
Switching control circuitInfo
- Publication number
- JPS5654534A JPS5654534A JP13003179A JP13003179A JPS5654534A JP S5654534 A JPS5654534 A JP S5654534A JP 13003179 A JP13003179 A JP 13003179A JP 13003179 A JP13003179 A JP 13003179A JP S5654534 A JPS5654534 A JP S5654534A
- Authority
- JP
- Japan
- Prior art keywords
- transmission line
- reception
- change
- line
- abnormality
- 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)
- Hardware Redundancy (AREA)
Abstract
PURPOSE: To obtain an inexpensive switching control circuit for the breaking of a transmission line by providing a change-over circuit at the terminal point of the transmission line and by supervising and changing over the transmission line at the terminal point.
CONSTITUTION: Central controller 1 is connected to terminals 2-1W2-N and change- over device 8 via transmission line 3 and reception line 4 and provides transmission and reception of information signals in the known method. On the basis of received signals from reception signal 4, central controller 1 exercises a supervision over abnormality of reception signal 4 and change-over device 8 supervises abnormality of transmission line 3 on the basis of signals from transmission line 3. If abnormality is detected on transmission line 3 or reception line 4, central controller 1 and change- over device 8 cooperate with each other to make connections between stand-by transmission line 9 and transmission line 3, and stand-by reception line 10 and reception line 4 in change-over device 8, thereby evading the abnormality.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13003179A JPS5654534A (en) | 1979-10-11 | 1979-10-11 | Switching control circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13003179A JPS5654534A (en) | 1979-10-11 | 1979-10-11 | Switching control circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5654534A true JPS5654534A (en) | 1981-05-14 |
Family
ID=15024431
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13003179A Pending JPS5654534A (en) | 1979-10-11 | 1979-10-11 | Switching control circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5654534A (en) |
-
1979
- 1979-10-11 JP JP13003179A patent/JPS5654534A/en active Pending
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