JPS5685951A - Data transmission device - Google Patents
Data transmission deviceInfo
- Publication number
- JPS5685951A JPS5685951A JP16166779A JP16166779A JPS5685951A JP S5685951 A JPS5685951 A JP S5685951A JP 16166779 A JP16166779 A JP 16166779A JP 16166779 A JP16166779 A JP 16166779A JP S5685951 A JPS5685951 A JP S5685951A
- Authority
- JP
- Japan
- Prior art keywords
- terminal equipment
- data
- gathering station
- data gathering
- photocoupler
- 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 the terminal equipment from a noize such as lightning surge, etc. and prevent a measuring error, by connecting the data gathering station in the data transmission device for executing a remote inspection of the working amount, and the terminal equipment, by the means which has electrically insulated the terminal equipment side.
CONSTITUTION: In case when a data which is electrically stored in the terminal equipment 20 is transmitted to the data gathering station 10 through the transmission lines l1, l2, the transmission lines l1, l2 and the terminal equipment 20 through the photocouplers PC1, PC2. When the transistor Tr is controlled to on and off by a clock pulse in the data gathering station 10, the photocoupler PC1 of the terminal equipment 20 operates, the same clock pulse is generated in its output terminal C, and a data from the information processing device 22 is read out. And, when the photocoupler PC2 is made active and nonactive, the potential level variation of the point B in the data gathering station 10 is detected, and the data is read.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16166779A JPS5685951A (en) | 1979-12-14 | 1979-12-14 | Data transmission device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16166779A JPS5685951A (en) | 1979-12-14 | 1979-12-14 | Data transmission device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5685951A true JPS5685951A (en) | 1981-07-13 |
Family
ID=15739539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16166779A Pending JPS5685951A (en) | 1979-12-14 | 1979-12-14 | Data transmission device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5685951A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5092621A (en) * | 1973-12-14 | 1975-07-24 | ||
JPS52109804A (en) * | 1976-01-09 | 1977-09-14 | Post Office | Data transmission system |
-
1979
- 1979-12-14 JP JP16166779A patent/JPS5685951A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5092621A (en) * | 1973-12-14 | 1975-07-24 | ||
JPS52109804A (en) * | 1976-01-09 | 1977-09-14 | Post Office | Data transmission system |
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