JPS55131855A - Transmission protection system for control signal - Google Patents
Transmission protection system for control signalInfo
- Publication number
- JPS55131855A JPS55131855A JP3955179A JP3955179A JPS55131855A JP S55131855 A JPS55131855 A JP S55131855A JP 3955179 A JP3955179 A JP 3955179A JP 3955179 A JP3955179 A JP 3955179A JP S55131855 A JPS55131855 A JP S55131855A
- Authority
- JP
- Japan
- Prior art keywords
- output signal
- specific pattern
- transmission
- control
- control 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.)
- Pending
Links
Abstract
PURPOSE: To protect sufficiently the transmission of a control signal to a unit to be controlled by detecting the coincidence of each output signal corresponding to a specific pattern sent out from a control system in sequence at intervals of constant time, in a transmission protection system for the control signals to the controlled unit in trouble.
CONSTITUTION: Detectors 2 and 3, connected to buses D0, D1, D2 and D3 detect a different specific pattern to generate an output signal and delay circuit 4 give the output signal time delay corresponding to the transmission timeing of the specific pattern. Then, control system 1 sends the specific pattern onto buses in sequence with a constant difference in time and NAND circuit 5, when detecting the coincidence of each corresponding output signal, validates the control signal outputted from system 1. Consequently, when the control system is in trouble, the transmission protection of control signals to the controlled unit can sufficiently come into effect.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3955179A JPS55131855A (en) | 1979-04-02 | 1979-04-02 | Transmission protection system for control signal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3955179A JPS55131855A (en) | 1979-04-02 | 1979-04-02 | Transmission protection system for control signal |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS55131855A true JPS55131855A (en) | 1980-10-14 |
Family
ID=12556190
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3955179A Pending JPS55131855A (en) | 1979-04-02 | 1979-04-02 | Transmission protection system for control signal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55131855A (en) |
-
1979
- 1979-04-02 JP JP3955179A patent/JPS55131855A/en active Pending
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