JPS57142054A - Dispatching telephone system - Google Patents

Dispatching telephone system

Info

Publication number
JPS57142054A
JPS57142054A JP2860781A JP2860781A JPS57142054A JP S57142054 A JPS57142054 A JP S57142054A JP 2860781 A JP2860781 A JP 2860781A JP 2860781 A JP2860781 A JP 2860781A JP S57142054 A JPS57142054 A JP S57142054A
Authority
JP
Japan
Prior art keywords
master station
lamp
instruction
reception
buzzer
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
JP2860781A
Other languages
Japanese (ja)
Inventor
Masazumi Nakatsugawa
Shigeru Hasegawa
Koichiro Ozawa
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
NEC Engineering Ltd
Original Assignee
NEC Corp
NEC Engineering Ltd
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, NEC Engineering Ltd, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2860781A priority Critical patent/JPS57142054A/en
Publication of JPS57142054A publication Critical patent/JPS57142054A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Selective Calling Equipment (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Data Exchanges In Wide-Area Networks (AREA)
  • Small-Scale Networks (AREA)

Abstract

PURPOSE:To display if the confirmation of reception of an instruction is made with a response at the next polling from a master station, by driving a buzzer when the instruction from the master station is received at a slave station, stopping the buzzer when the reception is confirmed by the instruction receiver and illuminating a confirmation lamp. CONSTITUTION:When the information given from a master station 3 is received at a telemeter transmission/reception section 1, it is transferred to a register 4, an FF6 is set and a lamp 10 is illuminated through a lamp driving circuit 9. When a buzzer 12 is driven from the FF6n and the instruction receiver depresses a confirming switch 13, the FF6 is reset and an FF8 is set, a lamp 16 illuminates, the output of the FF8 is inputted to the section 1 and transmitted to the master station 3 as the data. Further, at the application of power supply, the state of power supply is detected at a circuit 18 and the FFs 6 and 8 are reset. When a response from the transmission and reception section 1 is obtained for the next polling from the master station, the master station can recognize if the slave station depresses the confirmation switch, if the power supply is in failure; etc. in accordance with the content of the response.
JP2860781A 1981-02-27 1981-02-27 Dispatching telephone system Pending JPS57142054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2860781A JPS57142054A (en) 1981-02-27 1981-02-27 Dispatching telephone system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2860781A JPS57142054A (en) 1981-02-27 1981-02-27 Dispatching telephone system

Publications (1)

Publication Number Publication Date
JPS57142054A true JPS57142054A (en) 1982-09-02

Family

ID=12253256

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2860781A Pending JPS57142054A (en) 1981-02-27 1981-02-27 Dispatching telephone system

Country Status (1)

Country Link
JP (1) JPS57142054A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932216A (en) * 1982-08-17 1984-02-21 Sony Corp Digital signal processing circuit and digital filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5932216A (en) * 1982-08-17 1984-02-21 Sony Corp Digital signal processing circuit and digital filter
JPH0370411B2 (en) * 1982-08-17 1991-11-07 Sony Corp

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