JPS52117016A - Remote observation - Google Patents
Remote observationInfo
- Publication number
- JPS52117016A JPS52117016A JP3462376A JP3462376A JPS52117016A JP S52117016 A JPS52117016 A JP S52117016A JP 3462376 A JP3462376 A JP 3462376A JP 3462376 A JP3462376 A JP 3462376A JP S52117016 A JPS52117016 A JP S52117016A
- Authority
- JP
- Japan
- Prior art keywords
- remote observation
- wireless
- modulate
- notice
- trouble
- 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
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
PURPOSE: To notice the trouble in simple constitution by providing the failure signal modulation part to modulate the wireless frequency carrier directly with the tone frequency etc. corresponding to the failure state in the wireless relay unit side and detecting it with using the band pass filter in receiving side.
COPYRIGHT: (C)1977,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3462376A JPS52117016A (en) | 1976-03-29 | 1976-03-29 | Remote observation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3462376A JPS52117016A (en) | 1976-03-29 | 1976-03-29 | Remote observation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS52117016A true JPS52117016A (en) | 1977-10-01 |
Family
ID=12419505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3462376A Pending JPS52117016A (en) | 1976-03-29 | 1976-03-29 | Remote observation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS52117016A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63238746A (en) * | 1987-03-26 | 1988-10-04 | Nec Corp | Trouble supervising system for transmission line signal |
-
1976
- 1976-03-29 JP JP3462376A patent/JPS52117016A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63238746A (en) * | 1987-03-26 | 1988-10-04 | Nec Corp | Trouble supervising system for transmission line signal |
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