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JPS5690657A - Wire transmission system - Google Patents

Wire transmission system

Info

Publication number
JPS5690657A
JPS5690657A JP16755579A JP16755579A JPS5690657A JP S5690657 A JPS5690657 A JP S5690657A JP 16755579 A JP16755579 A JP 16755579A JP 16755579 A JP16755579 A JP 16755579A JP S5690657 A JPS5690657 A JP S5690657A
Authority
JP
Japan
Prior art keywords
station
signal
space
clock pulses
mark
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
JP16755579A
Other languages
Japanese (ja)
Inventor
Hitoshi Yamamoto
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.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co 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 Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP16755579A priority Critical patent/JPS5690657A/en
Publication of JPS5690657A publication Critical patent/JPS5690657A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q9/00—Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom
    • H04Q9/14—Calling by using pulses

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Dc Digital Transmission (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To make it stable and secure to transmit and receive information by utilizing a signal transmitted from a center station without specially providing a transmitting circuit device at each terminal station participating in wire transmission. CONSTITUTION:A center station, after transmitting calling pulses to a specific subordinate station among terminal stations, sends out clock pulses composed of a periodic and repetitive string of a prescribed mark and space signal. The called subordinate station changes the mark signal or space signal in the clock pulses into the space or mark signal according to transmitted data and transmits it to the center station. The said subordinate station rectifies and smooths the received clock pulses, generates a reference level by the output and then by comparing this reference level with the level of said received clock pulse signal discrimination is secured.
JP16755579A 1979-12-25 1979-12-25 Wire transmission system Pending JPS5690657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16755579A JPS5690657A (en) 1979-12-25 1979-12-25 Wire transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16755579A JPS5690657A (en) 1979-12-25 1979-12-25 Wire transmission system

Publications (1)

Publication Number Publication Date
JPS5690657A true JPS5690657A (en) 1981-07-22

Family

ID=15851886

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16755579A Pending JPS5690657A (en) 1979-12-25 1979-12-25 Wire transmission system

Country Status (1)

Country Link
JP (1) JPS5690657A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59230353A (en) * 1983-06-13 1984-12-24 Matsushita Electric Ind Co Ltd Data transmitter between controllers
JPS6146643A (en) * 1984-08-11 1986-03-06 Matsushita Electric Works Ltd Time division multiplex transmitter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51145256A (en) * 1975-06-09 1976-12-14 Nippon Telegr & Teleph Corp <Ntt> Signal detecting circuit
JPS52124810A (en) * 1976-04-12 1977-10-20 Mitsubishi Electric Corp Information transmission
JPS5337344A (en) * 1976-09-17 1978-04-06 Ricoh Co Ltd Data collecting system
JPS54112106A (en) * 1978-02-23 1979-09-01 Sony Corp Data transmission system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS51145256A (en) * 1975-06-09 1976-12-14 Nippon Telegr & Teleph Corp <Ntt> Signal detecting circuit
JPS52124810A (en) * 1976-04-12 1977-10-20 Mitsubishi Electric Corp Information transmission
JPS5337344A (en) * 1976-09-17 1978-04-06 Ricoh Co Ltd Data collecting system
JPS54112106A (en) * 1978-02-23 1979-09-01 Sony Corp Data transmission system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59230353A (en) * 1983-06-13 1984-12-24 Matsushita Electric Ind Co Ltd Data transmitter between controllers
JPS6146643A (en) * 1984-08-11 1986-03-06 Matsushita Electric Works Ltd Time division multiplex transmitter

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