JPS57174943A - Power line carrier device - Google Patents

Power line carrier device

Info

Publication number
JPS57174943A
JPS57174943A JP6160281A JP6160281A JPS57174943A JP S57174943 A JPS57174943 A JP S57174943A JP 6160281 A JP6160281 A JP 6160281A JP 6160281 A JP6160281 A JP 6160281A JP S57174943 A JPS57174943 A JP S57174943A
Authority
JP
Japan
Prior art keywords
transmission
signal
power line
high frequency
current
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
Application number
JP6160281A
Other languages
Japanese (ja)
Inventor
Kimio Yatsunami
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sharp Corp
Original Assignee
Sharp Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sharp Corp filed Critical Sharp Corp
Priority to JP6160281A priority Critical patent/JPS57174943A/en
Publication of JPS57174943A publication Critical patent/JPS57174943A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/54—Systems for transmission via power distribution lines
    • 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
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5495—Systems for power line communications having measurements and testing channel

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To achieve a communication of high quality at all times, by responding a level of test signal received at a receiving end to a transmission end and controlling the transmission power at the transmission end with this response signal. CONSTITUTION:In transmitting audio and data on a high frequency current to a power line 1, when the transmission end is taken as the transmission and receiving device 2, a test signal is inputted to a modulator 20 before the information transmission transmitted by the device 2 to modulate carriers and the modulated output is given to the power line 1 in the form of high frequency current via an amplitude limiter 21 and an OR gate 17. This current transmits on the power line 1 and reaches a receiving end 2' and the high frequency signal is introduced to a receiver 2' with a device 11' at the receiving end. This current is inputted to a demodulator 15' via a filter 12' which transmits only an effective signal component and an amplifier 13', and after the signal is demodulated, a signal level for test is transmitted to the transmission end from a terminal 14'.
JP6160281A 1981-04-21 1981-04-21 Power line carrier device Pending JPS57174943A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6160281A JPS57174943A (en) 1981-04-21 1981-04-21 Power line carrier device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6160281A JPS57174943A (en) 1981-04-21 1981-04-21 Power line carrier device

Publications (1)

Publication Number Publication Date
JPS57174943A true JPS57174943A (en) 1982-10-27

Family

ID=13175871

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6160281A Pending JPS57174943A (en) 1981-04-21 1981-04-21 Power line carrier device

Country Status (1)

Country Link
JP (1) JPS57174943A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128838A (en) * 1983-01-13 1984-07-25 Osaki Denki Kogyo Kk System for transmitting phase pulse signal
JPS59128839A (en) * 1983-01-13 1984-07-25 Osaki Denki Kogyo Kk System for transmitting phase pulse signal
WO1998040975A1 (en) * 1997-03-11 1998-09-17 Electricite De France (Service National) Control device for the emission of carrier currents on a low voltage network

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59128838A (en) * 1983-01-13 1984-07-25 Osaki Denki Kogyo Kk System for transmitting phase pulse signal
JPS59128839A (en) * 1983-01-13 1984-07-25 Osaki Denki Kogyo Kk System for transmitting phase pulse signal
JPH023336B2 (en) * 1983-01-13 1990-01-23 Osaki Electric Co Ltd
JPH023335B2 (en) * 1983-01-13 1990-01-23 Osaki Electric Co Ltd
WO1998040975A1 (en) * 1997-03-11 1998-09-17 Electricite De France (Service National) Control device for the emission of carrier currents on a low voltage network
FR2760845A1 (en) * 1997-03-11 1998-09-18 Electricite De France DEVICE FOR CONTROLLING THE TRANSMISSION OF CARRIER CURRENTS ON A LV NETWORK
US6144290A (en) * 1997-03-11 2000-11-07 Electricite De France, Service National Control device for the emission of carrier currents on a low voltage network

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