JPS5679546A - Data transmission system - Google Patents

Data transmission system

Info

Publication number
JPS5679546A
JPS5679546A JP15712979A JP15712979A JPS5679546A JP S5679546 A JPS5679546 A JP S5679546A JP 15712979 A JP15712979 A JP 15712979A JP 15712979 A JP15712979 A JP 15712979A JP S5679546 A JPS5679546 A JP S5679546A
Authority
JP
Japan
Prior art keywords
data
transmission
circuit
code
conversion
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.)
Granted
Application number
JP15712979A
Other languages
Japanese (ja)
Other versions
JPS6048939B2 (en
Inventor
Kenzo Ono
Tsutomu Asabe
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 Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP54157129A priority Critical patent/JPS6048939B2/en
Publication of JPS5679546A publication Critical patent/JPS5679546A/en
Publication of JPS6048939B2 publication Critical patent/JPS6048939B2/en
Expired 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
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/4906—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems using binary codes

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

PURPOSE:To make easy the pickup of bit synchronism and to increase the reliability of data transmission without step-out, by providing the data conversion system suitable for the transmission line encoding between the data source and the transmission encoder and increasing the timing component shown in the transmission signal. CONSTITUTION:In the transmission section as shown in figure, the data is synchronized with the clock CL from a control circuit 13 and is input to a work discrimination circuit 8 in parallel in word unit. It is discriminated at this circuit 8 that all the bits of the inputted word are neither logic ''1'' or ''0'', and the control signals P1-P3 are outputted according to it. This signal is counting circuits 9, 10 and the countered outputs S1 and S2 are fed to the control circuit 13. This control circuit 13 transmits the control signal to shown the conversion method for the conversion circuit 14 according to the control signals from the counting circuits 9, 10. Thus, when the transmission line code is NRZ code, it is inhibited that the same is consecutive over a constant bit and when NRZi code, code conversion is made so that a number of data of logic ''1'' are produced
JP54157129A 1979-12-03 1979-12-03 Data transmission method Expired JPS6048939B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54157129A JPS6048939B2 (en) 1979-12-03 1979-12-03 Data transmission method

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54157129A JPS6048939B2 (en) 1979-12-03 1979-12-03 Data transmission method

Publications (2)

Publication Number Publication Date
JPS5679546A true JPS5679546A (en) 1981-06-30
JPS6048939B2 JPS6048939B2 (en) 1985-10-30

Family

ID=15642834

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54157129A Expired JPS6048939B2 (en) 1979-12-03 1979-12-03 Data transmission method

Country Status (1)

Country Link
JP (1) JPS6048939B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61276439A (en) * 1985-05-31 1986-12-06 Nissan Motor Co Ltd Data transmission equipment
JP2008140538A (en) * 2007-12-19 2008-06-19 Roland Corp Voice data transmitting/receiving device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61276439A (en) * 1985-05-31 1986-12-06 Nissan Motor Co Ltd Data transmission equipment
JP2008140538A (en) * 2007-12-19 2008-06-19 Roland Corp Voice data transmitting/receiving device
JP4481329B2 (en) * 2007-12-19 2010-06-16 ローランド株式会社 Audio data transmitter / receiver

Also Published As

Publication number Publication date
JPS6048939B2 (en) 1985-10-30

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