JPS55153456A - Pulse transmission circuit - Google Patents

Pulse transmission circuit

Info

Publication number
JPS55153456A
JPS55153456A JP6175879A JP6175879A JPS55153456A JP S55153456 A JPS55153456 A JP S55153456A JP 6175879 A JP6175879 A JP 6175879A JP 6175879 A JP6175879 A JP 6175879A JP S55153456 A JPS55153456 A JP S55153456A
Authority
JP
Japan
Prior art keywords
pulse
circuit
variation
detected
output
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
JP6175879A
Other languages
Japanese (ja)
Other versions
JPS5849049B2 (en
Inventor
Takashi Hoshino
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 JP54061758A priority Critical patent/JPS5849049B2/en
Publication of JPS55153456A publication Critical patent/JPS55153456A/en
Publication of JPS5849049B2 publication Critical patent/JPS5849049B2/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
    • H04L25/4902—Pulse width modulation; Pulse position modulation

Landscapes

  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Pulse Circuits (AREA)
  • Manipulation Of Pulses (AREA)
  • Dc Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Television Systems (AREA)

Abstract

PURPOSE:To keep the output pulse area constant, by detecting the average voltage of output pulse train and controlling the pulse width or pulse amplitude in response to the variation of the detected voltage. CONSTITUTION:The pulse train input to the terminal 11 is input to the pulse width control circuit 16, the output is input to the pulse transmission circuit 15 and wave- shaped at the pulse shape circuit 12 and amplified at the pulse amplifier circuit 15, and output from the terminal 14. The output pulse train is fed to the average value detection circuit 17 and the average voltage is detected. The average voltage detected at the circuit 17 is compared with the reference value at the variation detecting circuit 18 and the variation of the average voltage is detected. The circuit 16 is controlled with the amount of variation detected and the pulse width is changed so that the amount of variation can be reduced. Accordingly, the pulse area (widthXamplitude) of the output pulse train is kept constant and highly accurate transmission system can be constituted.
JP54061758A 1979-05-18 1979-05-18 Pulse sending circuit Expired JPS5849049B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54061758A JPS5849049B2 (en) 1979-05-18 1979-05-18 Pulse sending circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54061758A JPS5849049B2 (en) 1979-05-18 1979-05-18 Pulse sending circuit

Publications (2)

Publication Number Publication Date
JPS55153456A true JPS55153456A (en) 1980-11-29
JPS5849049B2 JPS5849049B2 (en) 1983-11-01

Family

ID=13180365

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54061758A Expired JPS5849049B2 (en) 1979-05-18 1979-05-18 Pulse sending circuit

Country Status (1)

Country Link
JP (1) JPS5849049B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208780A (en) * 1981-06-18 1982-12-21 Pioneer Electronic Corp Wave shaping circuit
JPS60235519A (en) * 1984-05-08 1985-11-22 Nec Corp Self-bias gate circuit

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319706A (en) * 1976-08-07 1978-02-23 Hitachi Ltd Data communication system

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5319706A (en) * 1976-08-07 1978-02-23 Hitachi Ltd Data communication system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57208780A (en) * 1981-06-18 1982-12-21 Pioneer Electronic Corp Wave shaping circuit
JPS60235519A (en) * 1984-05-08 1985-11-22 Nec Corp Self-bias gate circuit

Also Published As

Publication number Publication date
JPS5849049B2 (en) 1983-11-01

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