JPS5724132A - Power line data transmission system - Google Patents
Power line data transmission systemInfo
- Publication number
- JPS5724132A JPS5724132A JP10013180A JP10013180A JPS5724132A JP S5724132 A JPS5724132 A JP S5724132A JP 10013180 A JP10013180 A JP 10013180A JP 10013180 A JP10013180 A JP 10013180A JP S5724132 A JPS5724132 A JP S5724132A
- Authority
- JP
- Japan
- Prior art keywords
- channel
- power line
- noise
- output
- counters
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/54—Systems for transmission via power distribution lines
- H04B3/542—Systems for transmission via power distribution lines the information being in digital form
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5408—Methods of transmitting or receiving signals via power distribution lines using protocols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2203/00—Indexing scheme relating to line transmission systems
- H04B2203/54—Aspects of powerline communications not already covered by H04B3/54 and its subgroups
- H04B2203/5404—Methods of transmitting or receiving signals via power distribution lines
- H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
Abstract
PURPOSE:To increase the reliability, by providing a circuit selecting channels without any synchronizing noise. CONSTITUTION:Channel pulses obtained by dividing one cycle of the power supply frequency by a factor of n by from a channel pulse generator 1 is generated at output terminals T0-Tn. The number of noises of each channel is counted based on the output of a noise detector 4 and each channel pulse through counters 7-0-7-n. The content of counters is judged by a numeral comparison selector 9 and a channel with least noise number is selected, and the number of this channel is stored for a fixed time with a latch 10. At transmission, a changeover switch 3 is switched to 3B side and channel pulses picked up by a multiplexer 11 and transmission data are applied to an AND gate 12 based on the channel nember stored. The output of the AND gate 12 is applied to a data transmitter and transmitted to a power line 2.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10013180A JPS5724132A (en) | 1980-07-21 | 1980-07-21 | Power line data transmission system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10013180A JPS5724132A (en) | 1980-07-21 | 1980-07-21 | Power line data transmission system |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5724132A true JPS5724132A (en) | 1982-02-08 |
JPS615298B2 JPS615298B2 (en) | 1986-02-17 |
Family
ID=14265754
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10013180A Granted JPS5724132A (en) | 1980-07-21 | 1980-07-21 | Power line data transmission system |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5724132A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0370943A2 (en) * | 1988-11-22 | 1990-05-30 | Harel Giora | System for telemetering data |
US5451235A (en) * | 1991-11-05 | 1995-09-19 | C.R. Bard, Inc. | Occluder and method for repair of cardiac and vascular defects |
US5709707A (en) * | 1995-10-30 | 1998-01-20 | Children's Medical Center Corporation | Self-centering umbrella-type septal closure device |
US6508828B1 (en) | 2000-11-03 | 2003-01-21 | Radi Medical Systems Ab | Sealing device and wound closure device |
US6596012B2 (en) | 2000-04-19 | 2003-07-22 | Radi Medical Systems Ab | Intra-arterial occluder |
-
1980
- 1980-07-21 JP JP10013180A patent/JPS5724132A/en active Granted
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0370943A2 (en) * | 1988-11-22 | 1990-05-30 | Harel Giora | System for telemetering data |
EP0370943A3 (en) * | 1988-11-22 | 1991-06-12 | Harel Giora | System for telemetering data |
US5451235A (en) * | 1991-11-05 | 1995-09-19 | C.R. Bard, Inc. | Occluder and method for repair of cardiac and vascular defects |
US5709707A (en) * | 1995-10-30 | 1998-01-20 | Children's Medical Center Corporation | Self-centering umbrella-type septal closure device |
US6596012B2 (en) | 2000-04-19 | 2003-07-22 | Radi Medical Systems Ab | Intra-arterial occluder |
US6508828B1 (en) | 2000-11-03 | 2003-01-21 | Radi Medical Systems Ab | Sealing device and wound closure device |
Also Published As
Publication number | Publication date |
---|---|
JPS615298B2 (en) | 1986-02-17 |
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