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JPS56122253A - Signal transmission system - Google Patents

Signal transmission system

Info

Publication number
JPS56122253A
JPS56122253A JP2490380A JP2490380A JPS56122253A JP S56122253 A JPS56122253 A JP S56122253A JP 2490380 A JP2490380 A JP 2490380A JP 2490380 A JP2490380 A JP 2490380A JP S56122253 A JPS56122253 A JP S56122253A
Authority
JP
Japan
Prior art keywords
information
signal
transmitted
transmission
transmission line
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
JP2490380A
Other languages
Japanese (ja)
Inventor
Minoru Tanaka
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2490380A priority Critical patent/JPS56122253A/en
Publication of JPS56122253A publication Critical patent/JPS56122253A/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]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Small-Scale Networks (AREA)
  • Selective Calling Equipment (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

PURPOSE:To transmit information in a short time without the station designation signal from the central control device, by providing a storage circuit, where information to be transmitted is stored temporarily, and a transmission control circuit in each distributed station. CONSTITUTION:Central control device 3 and plural slave stations 1 are connected to common up-transmission line 2 and down-transmission line 2'. Each station 1 is provided with temporary storage device 6, where information to be transmitted is stored temporarily, and transmission control circuit 8. Signal detecting circuit 7 which detects the signal of transmission line 2 is connected to transmission control circuit 8. Signal detecting circuit 7 uses the time of the change from signal presence to signal absence as the reference time for transmission starting to transmit information from temporary storage device 6 to the transmission line through switch 5. As a result, information is transmitted without receiving of a special command from central control device 3, and information is transmitted efficiently.
JP2490380A 1980-02-29 1980-02-29 Signal transmission system Pending JPS56122253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2490380A JPS56122253A (en) 1980-02-29 1980-02-29 Signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2490380A JPS56122253A (en) 1980-02-29 1980-02-29 Signal transmission system

Publications (1)

Publication Number Publication Date
JPS56122253A true JPS56122253A (en) 1981-09-25

Family

ID=12151129

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2490380A Pending JPS56122253A (en) 1980-02-29 1980-02-29 Signal transmission system

Country Status (1)

Country Link
JP (1) JPS56122253A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6360643A (en) * 1986-08-25 1988-03-16 アメリカン　テレフオン　アンド　テレグラフ　カムパニ− Local area network

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6360643A (en) * 1986-08-25 1988-03-16 アメリカン　テレフオン　アンド　テレグラフ　カムパニ− Local area network
JPH0547142B2 (en) * 1986-08-25 1993-07-15 American Telephone & Telegraph

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