JPS54156146A - Indoor power line carrier system - Google Patents
Indoor power line carrier systemInfo
- Publication number
- JPS54156146A JPS54156146A JP6598478A JP6598478A JPS54156146A JP S54156146 A JPS54156146 A JP S54156146A JP 6598478 A JP6598478 A JP 6598478A JP 6598478 A JP6598478 A JP 6598478A JP S54156146 A JPS54156146 A JP S54156146A
- Authority
- JP
- Japan
- Prior art keywords
- transmitter
- circuit
- power line
- signal
- indoor power
- 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
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Selective Calling Equipment (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
PURPOSE: To check to see if the routine operation is normal or not by allowing the respective transmitters to receive the start signal immediately before each transmission of information by the transmitters.
CONSTITUTION: A transmitter 1 is provided with a final control element 1a to be driven by a manual switch, a disaster prevention sensor or the like and an osicllation circuit 1b which is actuated to oscillate a given signal by the output of the control element 1b in such a manner as to overlap the indoor power line l. A receiver 2 has a counter circuit 26 for counting the binary signal from the transmitter 1, a reference frequency oscillation circuit 2c, a comparison circuit 2d and an output circut 2a for emanating the signal to activate the load. The transmitter 1, combined with a transmitting function, can check whether it normally receive signals transmitted by itself.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6598478A JPS54156146A (en) | 1978-05-31 | 1978-05-31 | Indoor power line carrier system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6598478A JPS54156146A (en) | 1978-05-31 | 1978-05-31 | Indoor power line carrier system |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54156146A true JPS54156146A (en) | 1979-12-08 |
Family
ID=13302771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6598478A Pending JPS54156146A (en) | 1978-05-31 | 1978-05-31 | Indoor power line carrier system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54156146A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003069796A1 (en) * | 2002-02-13 | 2003-08-21 | Sumitomo Electric Industries, Ltd. | Power line carrier communication modem |
-
1978
- 1978-05-31 JP JP6598478A patent/JPS54156146A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003069796A1 (en) * | 2002-02-13 | 2003-08-21 | Sumitomo Electric Industries, Ltd. | Power line carrier communication modem |
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