JPS5616341A - Multiplex transmission system of signal - Google Patents

Multiplex transmission system of signal

Info

Publication number
JPS5616341A
JPS5616341A JP9290279A JP9290279A JPS5616341A JP S5616341 A JPS5616341 A JP S5616341A JP 9290279 A JP9290279 A JP 9290279A JP 9290279 A JP9290279 A JP 9290279A JP S5616341 A JPS5616341 A JP S5616341A
Authority
JP
Japan
Prior art keywords
terminal
signal
master unit
control signal
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.)
Pending
Application number
JP9290279A
Other languages
Japanese (ja)
Inventor
Yoshiharu Suzuki
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.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works 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 Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP9290279A priority Critical patent/JPS5616341A/en
Publication of JPS5616341A publication Critical patent/JPS5616341A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/14—Monitoring arrangements

Landscapes

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

Abstract

PURPOSE:To increase the reliability of the system by securing such state under which the specified terminal unit transmits the return signal by the control signal sent from the master unit and regardless of the operation switch and thus giving a periodical function check to the terminal unit. CONSTITUTION:The signals are transmitted and received in the time-division cyclic multiplex transmission method between the master unit and plural numbers of terminal units, and no return signal is usually transmitted from the terminal. In such system, change-over bit A is given to part of control signal SC sent from the master unit in terms of existence of the return signal, and the rest of the control signal is defined as control data B. Terminalunit 2 extracts bit A by serial-parallel converter 5 to apply it to OR gate G2. At the same time, switch gate signal SWG is supplied to gate G2 from signal process part 6 to be turned to the H level if either one of operation switches 7 is pushed. Then bit A is set at the H level for the control signal sent from the master unit. Thus return signal RET can be transmitted from terminal 2 regardless of switch 7 to lealize a periodical function check for the terminal. As a result, the reliability can be increased for the system.
JP9290279A 1979-07-20 1979-07-20 Multiplex transmission system of signal Pending JPS5616341A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9290279A JPS5616341A (en) 1979-07-20 1979-07-20 Multiplex transmission system of signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9290279A JPS5616341A (en) 1979-07-20 1979-07-20 Multiplex transmission system of signal

Publications (1)

Publication Number Publication Date
JPS5616341A true JPS5616341A (en) 1981-02-17

Family

ID=14067395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9290279A Pending JPS5616341A (en) 1979-07-20 1979-07-20 Multiplex transmission system of signal

Country Status (1)

Country Link
JP (1) JPS5616341A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63283392A (en) * 1987-05-15 1988-11-21 Meidensha Electric Mfg Co Ltd Abnormality detecting method for information transmitting system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63283392A (en) * 1987-05-15 1988-11-21 Meidensha Electric Mfg Co Ltd Abnormality detecting method for information transmitting system

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