JPS5784640A - Transmission and reception device - Google Patents

Transmission and reception device

Info

Publication number
JPS5784640A
JPS5784640A JP16103880A JP16103880A JPS5784640A JP S5784640 A JPS5784640 A JP S5784640A JP 16103880 A JP16103880 A JP 16103880A JP 16103880 A JP16103880 A JP 16103880A JP S5784640 A JPS5784640 A JP S5784640A
Authority
JP
Japan
Prior art keywords
waveform
synchronizing
half wave
data signal
count value
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
JP16103880A
Other languages
Japanese (ja)
Other versions
JPS6318907B2 (en
Inventor
Tadahiko Nakamura
Tatsuo Higuchi
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.)
TOHO SEISAKUJIYO KK
TOHO SEISAKUSHO KK
TOUHOU SEISAKUJIYO KK
Original Assignee
TOHO SEISAKUJIYO KK
TOHO SEISAKUSHO KK
TOUHOU SEISAKUJIYO 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 TOHO SEISAKUJIYO KK, TOHO SEISAKUSHO KK, TOUHOU SEISAKUJIYO KK filed Critical TOHO SEISAKUJIYO KK
Priority to JP16103880A priority Critical patent/JPS5784640A/en
Publication of JPS5784640A publication Critical patent/JPS5784640A/en
Publication of JPS6318907B2 publication Critical patent/JPS6318907B2/ja
Granted 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
    • H04B2203/5425—Methods of transmitting or receiving signals via power distribution lines improving S/N by matching impedance, noise reduction, gain control
    • 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)
  • Time-Division Multiplex Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To simplify the constitution of transmitter and receiver and to prevent the misreception of noise, by making count operation in synchronizing with the positive and negative polarity of an AC power supply waveform. CONSTITUTION:A data signal generating circuit 7 transmits a reset pulse E to a signal line 4, based on the fact that a counter 6 of a transmitter 2 is actuated in synchronizing with a positive half wave of an AC power supply waveform A, and a data signal is transmitted to a signal line 4 as a time division data signal at negative half wave of the waveform A based on the count value. On the other hand, counters 120-12n of receivers 30-3n are operated in synchronizing with the positive half wave of the waveform A, and when the count value is a count value assigned to the value of itself, each reception device 3i sequentially makes reception operation.
JP16103880A 1980-11-14 1980-11-14 Transmission and reception device Granted JPS5784640A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16103880A JPS5784640A (en) 1980-11-14 1980-11-14 Transmission and reception device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16103880A JPS5784640A (en) 1980-11-14 1980-11-14 Transmission and reception device

Publications (2)

Publication Number Publication Date
JPS5784640A true JPS5784640A (en) 1982-05-27
JPS6318907B2 JPS6318907B2 (en) 1988-04-20

Family

ID=15727408

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16103880A Granted JPS5784640A (en) 1980-11-14 1980-11-14 Transmission and reception device

Country Status (1)

Country Link
JP (1) JPS5784640A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230312A (en) * 1975-09-03 1977-03-08 Mitsubishi Electric Corp Time sharing multiple communication device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5230312A (en) * 1975-09-03 1977-03-08 Mitsubishi Electric Corp Time sharing multiple communication device

Also Published As

Publication number Publication date
JPS6318907B2 (en) 1988-04-20

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