JPS54144119A - Signal transmission system - Google Patents

Signal transmission system

Info

Publication number
JPS54144119A
JPS54144119A JP5126378A JP5126378A JPS54144119A JP S54144119 A JPS54144119 A JP S54144119A JP 5126378 A JP5126378 A JP 5126378A JP 5126378 A JP5126378 A JP 5126378A JP S54144119 A JPS54144119 A JP S54144119A
Authority
JP
Japan
Prior art keywords
signal
high frequency
power supply
transmitters
injected
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
JP5126378A
Other languages
Japanese (ja)
Inventor
Takao Yoshihara
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP5126378A priority Critical patent/JPS54144119A/en
Publication of JPS54144119A publication Critical patent/JPS54144119A/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
    • 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
    • H04B2203/5416—Methods of transmitting or receiving signals via power distribution lines by adding signals to the wave form of the power source
    • 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
    • H04B2203/542—Methods of transmitting or receiving signals via power distribution lines using zero crossing information

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 perform correct data transmission, by each transmitter which superimposes a group of high frequency pulse signal train starting from the start signal pulse on the commercial power supply in one period of the high frequency power supply sequentially assigned. CONSTITUTION:The transmitters 5-1,5-2...5-n and the receiver 5 are connected in parallel between the distribution lines 3a and 3b, and the receiver 4 receives the high frequency pulse injected by the transmitters on the distribution lines 3a, 3b, and the synchronizing signal is injected between the distribution lines 3a and 3b. Then, the transmitters 5-1...5-n superimpose a group of high frequency pulse signal train started from the start pulse signal pulse on the commercial power supply in one period of the commercial power supply sequentially assigned, and data transmission is made by selectively receiving 4 the high frequency signal train based on the start signal. Thus, signal is read in every fine distance to which the data signal is injected, allowing to transmit data correctly even with the phase shift of the high frequency pulse signal.
JP5126378A 1978-04-29 1978-04-29 Signal transmission system Pending JPS54144119A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5126378A JPS54144119A (en) 1978-04-29 1978-04-29 Signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5126378A JPS54144119A (en) 1978-04-29 1978-04-29 Signal transmission system

Publications (1)

Publication Number Publication Date
JPS54144119A true JPS54144119A (en) 1979-11-10

Family

ID=12882050

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5126378A Pending JPS54144119A (en) 1978-04-29 1978-04-29 Signal transmission system

Country Status (1)

Country Link
JP (1) JPS54144119A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165198A (en) * 1982-03-26 1983-09-30 東京電力株式会社 Phase angle correction of phase pulse signal
WO2001091346A2 (en) * 2000-05-22 2001-11-29 Siemens Aktiengesellschaft Method for synchronizing communication stations in mutually independent power line communication (plc) networks
KR20030079050A (en) * 2002-04-01 2003-10-10 엘지전자 주식회사 Method of Power Line Communication
JP2012161165A (en) * 2011-01-31 2012-08-23 Mitsubishi Electric Corp Signal generation device, equipment operation detection device, equipment operation detection system, equipment operation detection method and program

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58165198A (en) * 1982-03-26 1983-09-30 東京電力株式会社 Phase angle correction of phase pulse signal
WO2001091346A2 (en) * 2000-05-22 2001-11-29 Siemens Aktiengesellschaft Method for synchronizing communication stations in mutually independent power line communication (plc) networks
WO2001091346A3 (en) * 2000-05-22 2002-05-23 Siemens Ag Method for synchronizing communication stations in mutually independent power line communication (plc) networks
KR20030079050A (en) * 2002-04-01 2003-10-10 엘지전자 주식회사 Method of Power Line Communication
JP2012161165A (en) * 2011-01-31 2012-08-23 Mitsubishi Electric Corp Signal generation device, equipment operation detection device, equipment operation detection system, equipment operation detection method and program

Similar Documents

Publication Publication Date Title
GB2266031B (en) A residential facility control system having a radio control capability
ZA803661B (en) Synchronisation in communication systems
DE69224216D1 (en) PROCESS FOR TRANSMITTING FREQUENCY OFFSET BY FREQUENCY DIVISION TO REDUCE SELF-INTERFERENCE
JPS54144119A (en) Signal transmission system
ES462974A1 (en) Arrangement for distribution of clock signals
GB2006491A (en) Data transmission system
EP0159362A4 (en) Data transmission system.
EP0306059A3 (en) Telemetry system with signal booster for digital data transmission through a transmission line
JPS54144118A (en) Signal transmission system
JPS5451305A (en) Synchronizer for sampling frequency
JPS5461814A (en) Data transmission system
JPS57112148A (en) System for multiplexing digital signal
SU1272955A2 (en) System for synchronizing time scales by tv channels
SU896778A1 (en) Information transmission system
JPS5537013A (en) Facsimile device
JPS5631247A (en) Communication system
JPS5294110A (en) Phase synchronizer using modified fm method
SU1840576A1 (en) System for synchronizing timers via radio channel
JPS5575362A (en) Transmission system for order monitor control information
ATE83347T1 (en) METHOD AND CIRCUIT ARRANGEMENT FOR SYNCHRONIZING A CLOCK GENERATOR.
JPS55161448A (en) Frame synchronizing system
JPS55141681A (en) Omega receiver
GB1242205A (en) Methods of co-ordinating a plurality of audio frequency signal transmitting stations in an electric power supply network
JPS5624841A (en) Signal transmitting system for modem with multiplexer
JPS5394737A (en) Synchronization system of loop data transmission system