JPS568947A - Information transmitter - Google Patents

Information transmitter

Info

Publication number
JPS568947A
JPS568947A JP8452779A JP8452779A JPS568947A JP S568947 A JPS568947 A JP S568947A JP 8452779 A JP8452779 A JP 8452779A JP 8452779 A JP8452779 A JP 8452779A JP S568947 A JPS568947 A JP S568947A
Authority
JP
Japan
Prior art keywords
signal
logic
output
transmission command
gate
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
JP8452779A
Other languages
Japanese (ja)
Other versions
JPS6156906B2 (en
Inventor
Taku Inada
Tatsuhiro Saito
Teruo Harashima
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.)
Nippon Signal Co Ltd
Original Assignee
Nippon Signal 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 Nippon Signal Co Ltd filed Critical Nippon Signal Co Ltd
Priority to JP8452779A priority Critical patent/JPS568947A/en
Publication of JPS568947A publication Critical patent/JPS568947A/en
Publication of JPS6156906B2 publication Critical patent/JPS6156906B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/06—Management of faults, events, alarms or notifications
    • H04L41/0677—Localisation of faults

Landscapes

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

Abstract

PURPOSE:To prevent a system from being in disorder by rapidly detecting a fault occurring by providing a terminal equipment with a fault detecting circuit that detects the existence of its carrier output after a certain time fixed on the basis of a transmission command signal passes. CONSTITUTION:When no carrier output is sent out a certain time after a transmission command is started, a transmission command set signal of logic ''1'' and a level detection signal of logic ''0'' are supplied to inverter 12A2 to obtain a signal of logic ''1''. The transmission command set signal, on the other hand, triggers monostable multivibrator 12A1 to generate a timing signal. After a fixed time, monostable multivibrator 12A1 is held at logic ''0'' and its inverted signal is applied to AND gate 12A4. The conditions under which the output of AND gate 12A4 is sent out are met at this time, thereby sending the output out. The output puts relay 12D into operation through OR gate 12C and via its contact 12D1, a disconnection from a circuit is made.
JP8452779A 1979-07-04 1979-07-04 Information transmitter Granted JPS568947A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8452779A JPS568947A (en) 1979-07-04 1979-07-04 Information transmitter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8452779A JPS568947A (en) 1979-07-04 1979-07-04 Information transmitter

Publications (2)

Publication Number Publication Date
JPS568947A true JPS568947A (en) 1981-01-29
JPS6156906B2 JPS6156906B2 (en) 1986-12-04

Family

ID=13833103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8452779A Granted JPS568947A (en) 1979-07-04 1979-07-04 Information transmitter

Country Status (1)

Country Link
JP (1) JPS568947A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115059A (en) * 1981-01-08 1982-07-17 Chino Works Ltd Data transmission equipment
JPS5897942A (en) * 1981-12-07 1983-06-10 Toshiba Corp Oscillating device
JPS5912657A (en) * 1982-07-13 1984-01-23 Meidensha Electric Mfg Co Ltd Transmission line protecting system of multidrop type information transmission system
JPS6072074U (en) * 1983-10-21 1985-05-21 デイエツクスアンテナ株式会社 Pay TV broadcast receiver
JPS6150381U (en) * 1984-09-03 1986-04-04
JPS61144991A (en) * 1984-12-19 1986-07-02 Toshiba Corp Bidirectional catv
JPS61144993A (en) * 1984-12-19 1986-07-02 Toshiba Corp Bidirectional catv

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57115059A (en) * 1981-01-08 1982-07-17 Chino Works Ltd Data transmission equipment
JPS5897942A (en) * 1981-12-07 1983-06-10 Toshiba Corp Oscillating device
JPS5912657A (en) * 1982-07-13 1984-01-23 Meidensha Electric Mfg Co Ltd Transmission line protecting system of multidrop type information transmission system
JPS6072074U (en) * 1983-10-21 1985-05-21 デイエツクスアンテナ株式会社 Pay TV broadcast receiver
JPS6150381U (en) * 1984-09-03 1986-04-04
JPS61144991A (en) * 1984-12-19 1986-07-02 Toshiba Corp Bidirectional catv
JPS61144993A (en) * 1984-12-19 1986-07-02 Toshiba Corp Bidirectional catv

Also Published As

Publication number Publication date
JPS6156906B2 (en) 1986-12-04

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