JPS54155704A - Signal transmission system - Google Patents

Signal transmission system

Info

Publication number
JPS54155704A
JPS54155704A JP6384378A JP6384378A JPS54155704A JP S54155704 A JPS54155704 A JP S54155704A JP 6384378 A JP6384378 A JP 6384378A JP 6384378 A JP6384378 A JP 6384378A JP S54155704 A JPS54155704 A JP S54155704A
Authority
JP
Japan
Prior art keywords
pulses
polarity
couple
bipolar
transmission system
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
JP6384378A
Other languages
Japanese (ja)
Inventor
Kyoichi Iwasa
Masanobu Ohata
Kazuo Tsukamoto
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone 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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP6384378A priority Critical patent/JPS54155704A/en
Publication of JPS54155704A publication Critical patent/JPS54155704A/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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To enable even an unbalanced transmission system to suppress a direct- current supreposed noise and a low-frequency noise by regenerating the output of a differntial amplifier by separating into signals of ''1'' and ''0'' according to a fixed threshold value. CONSTITUTION:Transmitter circuit 1 converts input signal (b) into bipolar output signal (c), which is sent out to transmission cable 2; by signal (c), a couple of bipolar pulses, obtained by adding positive-polarity pulses of the same amplitude and pulse width successively at the trailing edges of negative-polarity pulses, are made into ''1'' and a couple of bipolar pulses, obtained by adding negative-polarity pulses at the trailing edges of positive-polarity pulses, are made into ''0''. Then, a couple of pulses are sent out to the transmission line with the polarity inverted depending upon whether the polarity is ''1'' or ''0'' and the couple of pulses received are delayed to attain differential amplification 5 of both couples of pulses before and after the delay process; and its outputs are separated 6 and 7 into signals of ''1'' and ''0'' according to a fixed threshold value, thereby regenerating pulses. Consequently, a direct-current superposed noise and a low-frequency noise can be eliminated even by an unbalanced transmission system.
JP6384378A 1978-05-30 1978-05-30 Signal transmission system Pending JPS54155704A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6384378A JPS54155704A (en) 1978-05-30 1978-05-30 Signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6384378A JPS54155704A (en) 1978-05-30 1978-05-30 Signal transmission system

Publications (1)

Publication Number Publication Date
JPS54155704A true JPS54155704A (en) 1979-12-08

Family

ID=13241010

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6384378A Pending JPS54155704A (en) 1978-05-30 1978-05-30 Signal transmission system

Country Status (1)

Country Link
JP (1) JPS54155704A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211750A2 (en) * 1985-07-31 1987-02-25 AT&T Corp. Data transmission system

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4994308A (en) * 1973-01-11 1974-09-07
JPS5226108A (en) * 1975-08-25 1977-02-26 Tamura Electric Works Ltd Data transmission system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4994308A (en) * 1973-01-11 1974-09-07
JPS5226108A (en) * 1975-08-25 1977-02-26 Tamura Electric Works Ltd Data transmission system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0211750A2 (en) * 1985-07-31 1987-02-25 AT&T Corp. Data transmission system

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