JPS54110710A - Pulse signal transmission system - Google Patents

Pulse signal transmission system

Info

Publication number
JPS54110710A
JPS54110710A JP1803578A JP1803578A JPS54110710A JP S54110710 A JPS54110710 A JP S54110710A JP 1803578 A JP1803578 A JP 1803578A JP 1803578 A JP1803578 A JP 1803578A JP S54110710 A JPS54110710 A JP S54110710A
Authority
JP
Japan
Prior art keywords
pulse
rear edge
signal
low level
featuring
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
JP1803578A
Other languages
Japanese (ja)
Inventor
Masanobu Ohata
Taisuke Oguchi
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 JP1803578A priority Critical patent/JPS54110710A/en
Publication of JPS54110710A publication Critical patent/JPS54110710A/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
    • H04L25/38—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

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To avoid reduction of the noise margin by adding the pulse featuring the opposite polarity to the signal pulse with an appropriate amplitude and width to the rear edge of each signal pulse. CONSTITUTION:When the RZ signal shown in A is given to the transmission line, the rear edge of the pulse does not return to low level L at the reception end as shown in B. Thus, the noise margin is reduced. In this connection, the opposite- polarity pulse featuring the amplitude and duration according to the frequency property and the length of the transmission line is added to the rear edge of each signal pulse Ps as shown in the oblique line part of C. As a result, the rear edge of each output pulse can be returned to the low level at the reception end as shown in D, thus compensating the DC piling. In the case of the high-speed transmission, the ternary pulse of H, L and S levels is produced in accordance with the code to be transmitted as shown in C.
JP1803578A 1978-02-17 1978-02-17 Pulse signal transmission system Pending JPS54110710A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1803578A JPS54110710A (en) 1978-02-17 1978-02-17 Pulse signal transmission system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1803578A JPS54110710A (en) 1978-02-17 1978-02-17 Pulse signal transmission system

Publications (1)

Publication Number Publication Date
JPS54110710A true JPS54110710A (en) 1979-08-30

Family

ID=11960407

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1803578A Pending JPS54110710A (en) 1978-02-17 1978-02-17 Pulse signal transmission system

Country Status (1)

Country Link
JP (1) JPS54110710A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5057557A (en) * 1974-08-13 1975-05-20
JPS5061108A (en) * 1973-09-24 1975-05-26
JPS5384404A (en) * 1976-12-29 1978-07-25 Philips Nv Method of transmitting message for teleprinter facility and device for executing same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5061108A (en) * 1973-09-24 1975-05-26
JPS5057557A (en) * 1974-08-13 1975-05-20
JPS5384404A (en) * 1976-12-29 1978-07-25 Philips Nv Method of transmitting message for teleprinter facility and device for executing same

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