JPS55141834A - Transmission method of synchronizing signal - Google Patents

Transmission method of synchronizing signal

Info

Publication number
JPS55141834A
JPS55141834A JP5001679A JP5001679A JPS55141834A JP S55141834 A JPS55141834 A JP S55141834A JP 5001679 A JP5001679 A JP 5001679A JP 5001679 A JP5001679 A JP 5001679A JP S55141834 A JPS55141834 A JP S55141834A
Authority
JP
Japan
Prior art keywords
sec
bit
transmitted
data signal
synchronizing signal
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
JP5001679A
Other languages
Japanese (ja)
Inventor
Shizuo Sugiyama
Masatoshi Kawashima
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.)
Hitachi Denshi KK
Original Assignee
Hitachi Denshi KK
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 Hitachi Denshi KK filed Critical Hitachi Denshi KK
Priority to JP5001679A priority Critical patent/JPS55141834A/en
Publication of JPS55141834A publication Critical patent/JPS55141834A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To sufficiently perform the operation of equalization for automatic equalizer at reception side, by transmitting the synchronizing signal over plural numbers according to the characteristics of transmission line, in transmitting the synchronizing signal. CONSTITUTION:The same synchronizing signals 1A-1C are transmitted three times according to the characteristics of transmission line and the data signal 2 in 9,600 bit/sec is transmitted. Thus, the automatic equalizer at the reception side is sufficiently operated for equalization, then the data signal 2 in 9,600 bit/sec is surely received and the response signal 5 is immediately transmitted, succeeded with the synchronizing signals 1A-1C. Accordingly, the MODEM at the transmission side is set to the propagation speed in 9,600 bit/sec and the transmission of the data signal 2 in this speed is continued.
JP5001679A 1979-04-23 1979-04-23 Transmission method of synchronizing signal Pending JPS55141834A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5001679A JPS55141834A (en) 1979-04-23 1979-04-23 Transmission method of synchronizing signal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5001679A JPS55141834A (en) 1979-04-23 1979-04-23 Transmission method of synchronizing signal

Publications (1)

Publication Number Publication Date
JPS55141834A true JPS55141834A (en) 1980-11-06

Family

ID=12847195

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5001679A Pending JPS55141834A (en) 1979-04-23 1979-04-23 Transmission method of synchronizing signal

Country Status (1)

Country Link
JP (1) JPS55141834A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020645A (en) * 1983-07-15 1985-02-01 Fujitsu Ltd Automatic equalizing system
JPS61157039A (en) * 1984-12-28 1986-07-16 Fujitsu Ltd Subscriber line transmitter
JPH07105751B2 (en) * 1987-02-02 1995-11-13 モトローラ・インコーポレーテツド Time Division Multiple Access (TDMA) Communication System with Adaptive Equalizer Control Function

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6020645A (en) * 1983-07-15 1985-02-01 Fujitsu Ltd Automatic equalizing system
JPS61157039A (en) * 1984-12-28 1986-07-16 Fujitsu Ltd Subscriber line transmitter
JPH07105751B2 (en) * 1987-02-02 1995-11-13 モトローラ・インコーポレーテツド Time Division Multiple Access (TDMA) Communication System with Adaptive Equalizer Control Function

Similar Documents

Publication Publication Date Title
EP0164749A3 (en) High speed data communications system
EP0091014A3 (en) Method of data transmission over telephone circuits and modem therefor
JPS55141834A (en) Transmission method of synchronizing signal
JPS5799884A (en) Multiplex transmission of video signal
CA2000582A1 (en) Optical transmission device
JPS5630347A (en) Single-speed digital subscriber's line transmission system
JPS5324718A (en) Signal transmitter
JPS556944A (en) Narrow-band picture transmission system
JPS55130266A (en) Control system for attendant board
JPS56164427A (en) Logic circuit
JPS5665564A (en) Facsimile transmission method
JPS5335442A (en) Transmission and reception method and unit for address signal
JPS5456708A (en) Double transmission communication system
JPS5372407A (en) Quality detecting signal establishing system for data signal
JPS55115756A (en) Data transmission system
JPS6467039A (en) Method and system for transmission/reception diversity
JPS5370711A (en) Picture image transmitting system
JPS57160269A (en) Facsimile device
JPS5643853A (en) Bit-synchronous data transmission system
JPS5631252A (en) Line multiplex system
JPS51147154A (en) Automatic equalizer
JPS53132936A (en) Double communication system
EP0144042A3 (en) A method and an apparatus for maintaining digital communication in a single session
GB1522663A (en) Data modems with automatic equalization drop-out detection and data echo protection
JPS5385107A (en) Data communication system