JPS642492A - Remote supervisory and controlling equipment - Google Patents

Remote supervisory and controlling equipment

Info

Publication number
JPS642492A
JPS642492A JP15832487A JP15832487A JPS642492A JP S642492 A JPS642492 A JP S642492A JP 15832487 A JP15832487 A JP 15832487A JP 15832487 A JP15832487 A JP 15832487A JP S642492 A JPS642492 A JP S642492A
Authority
JP
Japan
Prior art keywords
circuit
code
switching circuit
switching
modulator
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
JP15832487A
Other languages
Japanese (ja)
Other versions
JPH012492A (en
Inventor
Takeo Yamanaka
Kenji Kawahara
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP62-158324A priority Critical patent/JPH012492A/en
Priority claimed from JP62-158324A external-priority patent/JPH012492A/en
Publication of JPS642492A publication Critical patent/JPS642492A/en
Publication of JPH012492A publication Critical patent/JPH012492A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To simplify the titled equipment and to improve the reliability of a system by sharing the modulator, demodulator, and regenerative relay circuit of each slave station for both up-and down-transmission, and switching and using them and switching the incoming level of the demodulator according to a connecting direction.
CONSTITUTION: A polling code or control code from a key station 0 are sent out of a code transmitting and receiving circuit 06 to a transmission line 3 through a modulator 07 and a switching circuit 09. A slave station 1 passes the sent code to a code transmitting and receiving circuit 13 through a 1st switching circuit 18a and a demodulator 14 and sends it out to a transmission line 4 through a (regenerative relay circuit 16), a switching circuit 17, a modulator 15, and a 2nd switching circuit 18b. When the slave station 1 is polled, the switching circuit 17 of the slave station 1 is switched in the opposite direction from that in a figure and the code sent by the code transmitting and receiving circuit 13 is sent out to the transmission line 3 through the switching circuit 17, modulator 15, and 2nd switching circuit 18b. The key station 0 receives it by the code transmitting and receiving circuit 06 through the switching circuit 09 and demodulator 08.
COPYRIGHT: (C)1989,JPO&Japio
JP62-158324A 1987-06-25 Remote monitoring control device Pending JPH012492A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62-158324A JPH012492A (en) 1987-06-25 Remote monitoring control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62-158324A JPH012492A (en) 1987-06-25 Remote monitoring control device

Publications (2)

Publication Number Publication Date
JPS642492A true JPS642492A (en) 1989-01-06
JPH012492A JPH012492A (en) 1989-01-06

Family

ID=

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6023356A (en) * 1997-06-11 2000-02-08 Sony Corporation Image recording apparatus and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162151A (en) * 1982-03-23 1983-09-26 Nec Corp System for transmitting information
JPS59158153A (en) * 1983-02-28 1984-09-07 Fujitsu Ltd Data transmission relay system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58162151A (en) * 1982-03-23 1983-09-26 Nec Corp System for transmitting information
JPS59158153A (en) * 1983-02-28 1984-09-07 Fujitsu Ltd Data transmission relay system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6023356A (en) * 1997-06-11 2000-02-08 Sony Corporation Image recording apparatus and method

Similar Documents

Publication Publication Date Title
CA2226447A1 (en) Distributed network control and fabric application interface
JPH03939B2 (en)
JPS642492A (en) Remote supervisory and controlling equipment
EP0254492A3 (en) A railway signalling system
CA2073093A1 (en) Band management system in communication
ZA821832B (en) A circuit arrangement for a data telecommunications exchange
JPS5757041A (en) Relay transmission system
JP2523735B2 (en) Switch monitoring and alarm information transfer device
JPS648736A (en) Answer-back system
JPS5810944A (en) Telex communication system
JPS5455306A (en) Multi-address communication system of time-division switchboard
JPS648799A (en) Terminal equipment for automatic metering system
JPS57206147A (en) Multiaddress calling system
JPS57170659A (en) Remote maintenance system for exchanger
JPS6482713A (en) Radio communication system
JPS6477348A (en) Alarm transfer system for digital radio system
JPS6410738A (en) Remote control system for satellite communication earth station
JPS6484400A (en) Cooperated/decentralized type building management system
JPS56149146A (en) Message communication network
JPS57162531A (en) Electric communication system
JPS6024739A (en) Radio circuit switching device
JPS56119556A (en) Control system for loop type network
JPS6457896A (en) Supervisory and control system
JPS6455958A (en) Facsimile communication system
JPS57170647A (en) Branch control system in data transmission system