JPS5745741A - Signal transmitter - Google Patents

Signal transmitter

Info

Publication number
JPS5745741A
JPS5745741A JP12016580A JP12016580A JPS5745741A JP S5745741 A JPS5745741 A JP S5745741A JP 12016580 A JP12016580 A JP 12016580A JP 12016580 A JP12016580 A JP 12016580A JP S5745741 A JPS5745741 A JP S5745741A
Authority
JP
Japan
Prior art keywords
sections
power supply
word
superimposed
transmission signal
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
JP12016580A
Other languages
Japanese (ja)
Inventor
Kyoji Yamazaki
Fumio Kamiya
Hisao Kobayashi
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.)
Toshiba Electric Equipment Corp
Toshiba Denzai KK
Original Assignee
Toshiba Electric Equipment Corp
Toshiba Denzai KK
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 Toshiba Electric Equipment Corp, Toshiba Denzai KK filed Critical Toshiba Electric Equipment Corp
Priority to JP12016580A priority Critical patent/JPS5745741A/en
Publication of JPS5745741A publication Critical patent/JPS5745741A/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
    • 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

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)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To surely identify transmission signals and to increase the transmission speed, by superimposing one word with maximum bits on a transmission signal near both the sides including the zero phase point of a power supply. CONSTITUTION:An operation panel 2 is connected to a power supply side of a power line 1 and a plurality of control terminals connecting a load 4 and a monitor terminal device 5 connecting a monitor device 6 are connected at load side. The operation panel and each terminal unit have input/output interfaces 21, 22, microcomputer 23, zero cross circuit 27, clock circuit 25, and counter 28, and a transmission signal is superimposed via the input and output interface on a power supply line 1. Three sections T1-T3 are set near the zero phase of power supply waveform for the transmission signal with the circuit 27 and the counter 28, and the signal is transmitted in synchronizing with the sections. A start word is superimposed on the sections T1, T2, T3 [Fig (a)] and each word for address, control and return is superimposed over several cycles by one-bit on the sections T1, T3 [Fig. (b)], and a request word from a terminal 5 is superimposed at the section T2 [Fig. (c)].
JP12016580A 1980-08-30 1980-08-30 Signal transmitter Pending JPS5745741A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12016580A JPS5745741A (en) 1980-08-30 1980-08-30 Signal transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12016580A JPS5745741A (en) 1980-08-30 1980-08-30 Signal transmitter

Publications (1)

Publication Number Publication Date
JPS5745741A true JPS5745741A (en) 1982-03-15

Family

ID=14779550

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12016580A Pending JPS5745741A (en) 1980-08-30 1980-08-30 Signal transmitter

Country Status (1)

Country Link
JP (1) JPS5745741A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143435A (en) * 1983-02-05 1984-08-17 Omron Tateisi Electronics Co Data transmission system
JP2013501450A (en) * 2009-08-06 2013-01-10 韓国標準科学研究院 Time broadcasting information transmitting / receiving device using power line and transmitting / receiving method thereof
JP2013207501A (en) * 2012-03-28 2013-10-07 Mega Chips Corp Communication system, communication device, and communication system operation method
WO2013175810A1 (en) * 2012-05-25 2013-11-28 株式会社吉川アールエフセミコン Power line communication system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143435A (en) * 1983-02-05 1984-08-17 Omron Tateisi Electronics Co Data transmission system
JP2013501450A (en) * 2009-08-06 2013-01-10 韓国標準科学研究院 Time broadcasting information transmitting / receiving device using power line and transmitting / receiving method thereof
JP2013207501A (en) * 2012-03-28 2013-10-07 Mega Chips Corp Communication system, communication device, and communication system operation method
WO2013175810A1 (en) * 2012-05-25 2013-11-28 株式会社吉川アールエフセミコン Power line communication system
JP2014003600A (en) * 2012-05-25 2014-01-09 Yoshikawa Rf Semicon Co Ltd Power line communication system
CN104285384A (en) * 2012-05-25 2015-01-14 株式会社吉川Rf半导体 Power line communication system
CN104285384B (en) * 2012-05-25 2016-09-07 株式会社吉川Rf半导体 Electric line communication system

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