JPS5621437A - Transmission system - Google Patents

Transmission system

Info

Publication number
JPS5621437A
JPS5621437A JP9819679A JP9819679A JPS5621437A JP S5621437 A JPS5621437 A JP S5621437A JP 9819679 A JP9819679 A JP 9819679A JP 9819679 A JP9819679 A JP 9819679A JP S5621437 A JPS5621437 A JP S5621437A
Authority
JP
Japan
Prior art keywords
signal
data
input
synchronizing
svo
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
JP9819679A
Other languages
Japanese (ja)
Inventor
Fusao Hata
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9819679A priority Critical patent/JPS5621437A/en
Publication of JPS5621437A publication Critical patent/JPS5621437A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0079—Receiver details
    • H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks

Landscapes

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

Abstract

PURPOSE:To prevent abnormal data from being taken into the receiving side, by transmitting the synchronizing signal as a kind of cancel signal in stead of the signal of input data in case that anomaly of input data is detected. CONSTITUTION:I/O part 1 is operated in the cyclic digital transmission system and is called from parallel-series (P/S) conversion part 21 periodically at every fixed time. The SVI (data transmission) signal from I/O part 1 and the SVO (data request) signal from address generating part 22 are applied to FF26. If the SVI signal is not returned from I/O part 1 during the time from the input of the SVO signal for reading data into P/S converting circuit 24, FF26 generates a noninput (EMP) signal. When the EMP signal is input, change-over switch 25 is switched to output the synchronizing signal from synchronizing pattern generator 27 to the MODEM side.
JP9819679A 1979-07-31 1979-07-31 Transmission system Pending JPS5621437A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9819679A JPS5621437A (en) 1979-07-31 1979-07-31 Transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9819679A JPS5621437A (en) 1979-07-31 1979-07-31 Transmission system

Publications (1)

Publication Number Publication Date
JPS5621437A true JPS5621437A (en) 1981-02-27

Family

ID=14213240

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9819679A Pending JPS5621437A (en) 1979-07-31 1979-07-31 Transmission system

Country Status (1)

Country Link
JP (1) JPS5621437A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57164635A (en) * 1981-04-03 1982-10-09 Toshiba Corp Squelch system for every direction in time division multiplex and time division multidirectional communication
JPS5955998U (en) * 1982-10-07 1984-04-12 三洋電機株式会社 Clothes dryer control plate attachment device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57164635A (en) * 1981-04-03 1982-10-09 Toshiba Corp Squelch system for every direction in time division multiplex and time division multidirectional communication
JPS5955998U (en) * 1982-10-07 1984-04-12 三洋電機株式会社 Clothes dryer control plate attachment device

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