JPS57101440A - Power line carrier communication system - Google Patents

Power line carrier communication system

Info

Publication number
JPS57101440A
JPS57101440A JP17650980A JP17650980A JPS57101440A JP S57101440 A JPS57101440 A JP S57101440A JP 17650980 A JP17650980 A JP 17650980A JP 17650980 A JP17650980 A JP 17650980A JP S57101440 A JPS57101440 A JP S57101440A
Authority
JP
Japan
Prior art keywords
line
power line
carrier
circuit
monitor
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
JP17650980A
Other languages
Japanese (ja)
Inventor
Tomio Murayama
Masami Kurata
Takashi Omori
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.)
Fujifilm Business Innovation Corp
Original Assignee
Fuji Xerox Co Ltd
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 Fuji Xerox Co Ltd filed Critical Fuji Xerox Co Ltd
Priority to JP17650980A priority Critical patent/JPS57101440A/en
Publication of JPS57101440A publication Critical patent/JPS57101440A/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
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5445—Local network
    • 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
    • H04B2203/5429—Applications for powerline communications
    • H04B2203/5458—Monitor sensor; Alarm systems
    • 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
    • H04B2203/5483—Systems for power line communications using coupling circuits

Abstract

PURPOSE:To achieve a power line carrier communication system which can restrict the use of line in advance, by providing a monitor monitoring if a power line is used for information transmission every communication terminal. CONSTITUTION:Carrier waves in a specified frequency flow to a distribution line 3 for lighting, when communication terminals 1 and n start communication. A line (power line) interface in a line monitor 2 picks up a carrier component and supplies it to a frequency detection circuit 2B in the monitor. The circuit 2B discriminates if a picked up carrier component is concident with a prescribed carrier frequency. The discriminated output is applied to a control circuit 2C. The circuit 2C is provided with a power supply and relays, and when the discrimination is coincident, the relays are driven and a lamp 4 is illumincated. That is, the lamp 4 is illumincated at all the terminals and each operator is given notice. Simultaneously, the control circuit 2C transmits an interruption inhibit signal 5 to the communication terminal of the station itself.
JP17650980A 1980-12-16 1980-12-16 Power line carrier communication system Pending JPS57101440A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17650980A JPS57101440A (en) 1980-12-16 1980-12-16 Power line carrier communication system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17650980A JPS57101440A (en) 1980-12-16 1980-12-16 Power line carrier communication system

Publications (1)

Publication Number Publication Date
JPS57101440A true JPS57101440A (en) 1982-06-24

Family

ID=16014869

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17650980A Pending JPS57101440A (en) 1980-12-16 1980-12-16 Power line carrier communication system

Country Status (1)

Country Link
JP (1) JPS57101440A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60137140A (en) * 1983-12-26 1985-07-20 Sharp Corp Controller of carrier type interphone system
JPS62287724A (en) * 1986-06-06 1987-12-14 Matsushita Electric Ind Co Ltd Signal supervisory equipment
EP1328139A1 (en) * 2000-02-24 2003-07-16 Hitachi, Ltd. Digital powerline control
EP2385747A3 (en) * 2010-05-08 2012-05-16 EMD Technologies, Inc. LED illumination systems

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60137140A (en) * 1983-12-26 1985-07-20 Sharp Corp Controller of carrier type interphone system
JPS62287724A (en) * 1986-06-06 1987-12-14 Matsushita Electric Ind Co Ltd Signal supervisory equipment
EP1328139A1 (en) * 2000-02-24 2003-07-16 Hitachi, Ltd. Digital powerline control
US6734641B2 (en) 2000-02-24 2004-05-11 Hitachi, Ltd. Device for turning on light and illumination apparatus
US9192005B2 (en) 2006-04-10 2015-11-17 Emd Technologies Inc. Illumination systems
US9706614B2 (en) 2006-04-10 2017-07-11 Emd Technologies Inc. Illumination systems
EP2385747A3 (en) * 2010-05-08 2012-05-16 EMD Technologies, Inc. LED illumination systems
US8710765B2 (en) 2010-05-08 2014-04-29 Robert Beland LED illumination systems

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