JPS5461804A - Information transmitter - Google Patents

Information transmitter

Info

Publication number
JPS5461804A
JPS5461804A JP12914977A JP12914977A JPS5461804A JP S5461804 A JPS5461804 A JP S5461804A JP 12914977 A JP12914977 A JP 12914977A JP 12914977 A JP12914977 A JP 12914977A JP S5461804 A JPS5461804 A JP S5461804A
Authority
JP
Japan
Prior art keywords
signal
information
transmitted
frequency
timer
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
JP12914977A
Other languages
Japanese (ja)
Inventor
Junichi Inoue
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 JP12914977A priority Critical patent/JPS5461804A/en
Publication of JPS5461804A publication Critical patent/JPS5461804A/en
Pending legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/12—Electric signal transmission systems in which the signal transmitted is frequency or phase of ac

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Communication Control (AREA)
  • Selective Calling Equipment (AREA)

Abstract

PURPOSE:To realize the rapid transmission of information signals by transmitting information only while the information signal changes, by operating a timer by detecting the change of the information signal. CONSTITUTION:Once contacts of contact signal generator 1 and information change signal generator 6 of subrodinate office 200 all turn from OFF to ON through the change of an information signal, an output after passing through differentiating circuit 7 triggers timer 9 to operate for time T1, and during this, the information signal is inputted to step oscillator 10 to generate a tone signal at frequency (fa) equivalent to the input, so that the signal will be transmitted to master office 100. With contacts turned from ON to OFF, timer 9 is driven through circuit 7 again, and a signal is transmitted at frequency (f0) for time T1. In this way, tone signals are generated and transmitted at the frequency which corresponds to the combination of the operation of contacts of generator 1.
JP12914977A 1977-10-26 1977-10-26 Information transmitter Pending JPS5461804A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12914977A JPS5461804A (en) 1977-10-26 1977-10-26 Information transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12914977A JPS5461804A (en) 1977-10-26 1977-10-26 Information transmitter

Publications (1)

Publication Number Publication Date
JPS5461804A true JPS5461804A (en) 1979-05-18

Family

ID=15002340

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12914977A Pending JPS5461804A (en) 1977-10-26 1977-10-26 Information transmitter

Country Status (1)

Country Link
JP (1) JPS5461804A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914334A (en) * 1982-07-16 1984-01-25 明星電気株式会社 Electric facility remote control system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837005A (en) * 1971-09-07 1973-05-31
JPS50120703A (en) * 1974-03-09 1975-09-22
JPS5133286A (en) * 1974-09-14 1976-03-22 Fuji Electrochemical Co Ltd ENKAKUKANSHI SEIGYO SOCHI
JPS5273295A (en) * 1975-12-15 1977-06-18 Matsushita Electric Works Ltd Signal transmission system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4837005A (en) * 1971-09-07 1973-05-31
JPS50120703A (en) * 1974-03-09 1975-09-22
JPS5133286A (en) * 1974-09-14 1976-03-22 Fuji Electrochemical Co Ltd ENKAKUKANSHI SEIGYO SOCHI
JPS5273295A (en) * 1975-12-15 1977-06-18 Matsushita Electric Works Ltd Signal transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5914334A (en) * 1982-07-16 1984-01-25 明星電気株式会社 Electric facility remote control system

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