JPS5753168A - Data transmission device using power line - Google Patents

Data transmission device using power line

Info

Publication number
JPS5753168A
JPS5753168A JP55128992A JP12899280A JPS5753168A JP S5753168 A JPS5753168 A JP S5753168A JP 55128992 A JP55128992 A JP 55128992A JP 12899280 A JP12899280 A JP 12899280A JP S5753168 A JPS5753168 A JP S5753168A
Authority
JP
Japan
Prior art keywords
signal
chip microcomputer
maximum value
current
pulse
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
JP55128992A
Other languages
Japanese (ja)
Other versions
JPS6366459B2 (en
Inventor
Masahiro Ise
Katsuyuki Machino
Tsuguhiko Tanaka
Takaaki Okamoto
Chuji Suzuki
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.)
Sharp Corp
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP55128992A priority Critical patent/JPS5753168A/en
Publication of JPS5753168A publication Critical patent/JPS5753168A/en
Publication of JPS6366459B2 publication Critical patent/JPS6366459B2/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
    • H04B2203/5416—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
    • H04B2203/5462—Systems for power line communications
    • H04B2203/5491—Systems for power line communications using filtering and bypassing

Abstract

PURPOSE:To obtain a transmission device for power line where the circuit constitution is simple and the number of parts is small, by replacing signal taking-out and holding circuits with a maximum value holding circuit and an open drain FET of a one-chip microcomputer. CONSTITUTION:The pulse signal superposed onto an AC current is extracted by a by-pass filter 23 and is restrained within a prescribed level through a clipper 25 and is inputted to a maximum value holding circuit 33. The AC current is connected to a generating circuit 36 for pulse synchronized with a power source, and a synchronizing pulse is taken out from the AC current and is sent to a counter part 45 of a one-chip microcomputer. In the one-chip microcomputer, a DCIS signal having a constant time relation to the synchronizing pulse is generated to control the gate of an FET47. The FET47 is opened for ''0'' of the CDIS signal and is short-circuited for ''1'' of the CDIS signal, and an output as shown in figure (c) appears in the output of the maximum value holding circuit 33, and the signal is read at a time t2 by the one-chip microcomputer.
JP55128992A 1980-09-16 1980-09-16 Data transmission device using power line Granted JPS5753168A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55128992A JPS5753168A (en) 1980-09-16 1980-09-16 Data transmission device using power line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55128992A JPS5753168A (en) 1980-09-16 1980-09-16 Data transmission device using power line

Publications (2)

Publication Number Publication Date
JPS5753168A true JPS5753168A (en) 1982-03-30
JPS6366459B2 JPS6366459B2 (en) 1988-12-20

Family

ID=14998443

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55128992A Granted JPS5753168A (en) 1980-09-16 1980-09-16 Data transmission device using power line

Country Status (1)

Country Link
JP (1) JPS5753168A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005297184A (en) * 2004-04-09 2005-10-27 Black & Decker Inc System and method for reading data via ac line cord in ac power tool

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53108224A (en) * 1976-12-29 1978-09-20 Gen Electric Information receiver
JPS5414116U (en) * 1977-06-30 1979-01-30

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5414116B2 (en) * 1971-09-02 1979-06-05

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53108224A (en) * 1976-12-29 1978-09-20 Gen Electric Information receiver
JPS5414116U (en) * 1977-06-30 1979-01-30

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005297184A (en) * 2004-04-09 2005-10-27 Black & Decker Inc System and method for reading data via ac line cord in ac power tool

Also Published As

Publication number Publication date
JPS6366459B2 (en) 1988-12-20

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