JPS5689149A - Signal transmission system - Google Patents

Signal transmission system

Info

Publication number
JPS5689149A
JPS5689149A JP16667779A JP16667779A JPS5689149A JP S5689149 A JPS5689149 A JP S5689149A JP 16667779 A JP16667779 A JP 16667779A JP 16667779 A JP16667779 A JP 16667779A JP S5689149 A JPS5689149 A JP S5689149A
Authority
JP
Japan
Prior art keywords
power source
signal transmission
unit
plural units
transmission
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
Application number
JP16667779A
Other languages
Japanese (ja)
Other versions
JPS5953742B2 (en
Inventor
Yoshihiro Fujimoto
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.)
Daikin Industries Ltd
Original Assignee
Daikin Industries 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 Daikin Industries Ltd filed Critical Daikin Industries Ltd
Priority to JP54166677A priority Critical patent/JPS5953742B2/en
Publication of JPS5689149A publication Critical patent/JPS5689149A/en
Publication of JPS5953742B2 publication Critical patent/JPS5953742B2/en
Expired 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
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5483—Systems for power line communications using coupling circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Small-Scale Networks (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To make high-precision oscillators and complicated circuits unnecessary to eliminate excess circuits, by utilizing the frequency of the commercial power source for synchronization and by using the half cycle of the sine wave of the commercial power source for one-bit signal transmission. CONSTITUTION:Signal transmission line 5 which connects plural units which become transmission unit 3 and receiving unit 4 mutually is connected to commercial power source 1 through transformer 2. Transmission line 5 is provided with transmission switching elements and receiving elements for plural units respectively. The frequency of power source 1 is utilized for synchronization of information communication between plural units. The half cycle of the sine wave of power source 1 is used for one-bit signal transmission. The digital signal from the transmission switching element of unit 3 is received by the receiving element of unit 4. As a result, information communication between plural units is possible.
JP54166677A 1979-12-21 1979-12-21 Signal transmission method Expired JPS5953742B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54166677A JPS5953742B2 (en) 1979-12-21 1979-12-21 Signal transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54166677A JPS5953742B2 (en) 1979-12-21 1979-12-21 Signal transmission method

Publications (2)

Publication Number Publication Date
JPS5689149A true JPS5689149A (en) 1981-07-20
JPS5953742B2 JPS5953742B2 (en) 1984-12-26

Family

ID=15835671

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54166677A Expired JPS5953742B2 (en) 1979-12-21 1979-12-21 Signal transmission method

Country Status (1)

Country Link
JP (1) JPS5953742B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0242848A (en) * 1989-07-21 1990-02-13 Toshiba Corp Serial data transferring device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0242848A (en) * 1989-07-21 1990-02-13 Toshiba Corp Serial data transferring device

Also Published As

Publication number Publication date
JPS5953742B2 (en) 1984-12-26

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