JPS5694851A - Control system of multi-point circuit - Google Patents

Control system of multi-point circuit

Info

Publication number
JPS5694851A
JPS5694851A JP17103479A JP17103479A JPS5694851A JP S5694851 A JPS5694851 A JP S5694851A JP 17103479 A JP17103479 A JP 17103479A JP 17103479 A JP17103479 A JP 17103479A JP S5694851 A JPS5694851 A JP S5694851A
Authority
JP
Japan
Prior art keywords
signal
station
optical
photoelectric converting
circuit
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
JP17103479A
Other languages
Japanese (ja)
Inventor
Yoshitsugu Yamanashi
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP17103479A priority Critical patent/JPS5694851A/en
Publication of JPS5694851A publication Critical patent/JPS5694851A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Optical Communication System (AREA)

Abstract

PURPOSE:To secure an operation as a repeater station, by controlling the switch mechanism when the selection signal is received and in case the signal is addressed to the own station to perform a circuit connection between the own station and the selection signal transmitting station and then performing a connection to the circuit control part of the next stage in case the signal is addressed to other station. CONSTITUTION:When the terminal device 17 selects terminal device 19, the switched to the transmission line at the side of the optical MODEM3 since the own station is not selected at the optical MODEM2. At the same time, the signal converted at the photoelectric converting circuit 8 is returned as it is to the photoelectric converting circuit 9 through the modulation/demodulation part 14 of the MODEM2. The photoelectric converting circuit 10 in the MODEM3 receives the signal from the optical MODEM1. This signal is demodulated through the modulation/demodulation part 15, and thus the electric signal is transmitted to the device 19. The device 19 can transmit and receive the signal since the own station is selected and thus transmits the polling signal to the device 17.
JP17103479A 1979-12-28 1979-12-28 Control system of multi-point circuit Pending JPS5694851A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17103479A JPS5694851A (en) 1979-12-28 1979-12-28 Control system of multi-point circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17103479A JPS5694851A (en) 1979-12-28 1979-12-28 Control system of multi-point circuit

Publications (1)

Publication Number Publication Date
JPS5694851A true JPS5694851A (en) 1981-07-31

Family

ID=15915853

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17103479A Pending JPS5694851A (en) 1979-12-28 1979-12-28 Control system of multi-point circuit

Country Status (1)

Country Link
JP (1) JPS5694851A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6714172B2 (en) 1997-07-14 2004-03-30 Canon Kabushiki Kaisha Display control system and its control method, switching device, connection device, peripheral device, peripheral device system, and their control method, and computer readable memory

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6714172B2 (en) 1997-07-14 2004-03-30 Canon Kabushiki Kaisha Display control system and its control method, switching device, connection device, peripheral device, peripheral device system, and their control method, and computer readable memory

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