JPS54121612A - Binary pulse reproduction repeater - Google Patents

Binary pulse reproduction repeater

Info

Publication number
JPS54121612A
JPS54121612A JP2959378A JP2959378A JPS54121612A JP S54121612 A JPS54121612 A JP S54121612A JP 2959378 A JP2959378 A JP 2959378A JP 2959378 A JP2959378 A JP 2959378A JP S54121612 A JPS54121612 A JP S54121612A
Authority
JP
Japan
Prior art keywords
circuit
level
fluctuation
identification
repeater
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
JP2959378A
Other languages
Japanese (ja)
Inventor
Shigeji Kameyama
Tatsuo Umetsu
Yoshihiro Matsumoto
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2959378A priority Critical patent/JPS54121612A/en
Publication of JPS54121612A publication Critical patent/JPS54121612A/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
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/062—Setting decision thresholds using feedforward techniques only

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)
  • Manipulation Of Pulses (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To reduce the error of the identification and reproduction for the clamping circuit which is used to the repeater for compensation of the DC component fluctuation by securing the automatic switching through which the DC clamp level is lowered less than the identification level at the nonsignal time and then fixed to the proper level at the normal signal input time. CONSTITUTION:The double pulse reproduction repeater is constituted with automatic gain fluctuation circuit 15, amplifier 16 and amplitude detector 17 which form the equivalent amplification system to compensate the level fluctuation of the input binary pulse signal, plus transistor TR2 forming the clamping circuit to compensate the DC component fluctuation of the input binary pulse signal and switching TR1 to switch the DC bias. When the DC control voltage of detector 17 exceeds the threshold level preset to voltage comparator 20, TR1 of clamping circuit is turned on and off to control the voltage at point 22 of the base side of TR22. And the DC control voltage of circuit 15 is switched automatically to be applied to identification reproducing circuit 25.
JP2959378A 1978-03-14 1978-03-14 Binary pulse reproduction repeater Pending JPS54121612A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2959378A JPS54121612A (en) 1978-03-14 1978-03-14 Binary pulse reproduction repeater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2959378A JPS54121612A (en) 1978-03-14 1978-03-14 Binary pulse reproduction repeater

Publications (1)

Publication Number Publication Date
JPS54121612A true JPS54121612A (en) 1979-09-20

Family

ID=12280362

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2959378A Pending JPS54121612A (en) 1978-03-14 1978-03-14 Binary pulse reproduction repeater

Country Status (1)

Country Link
JP (1) JPS54121612A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862954A (en) * 1981-10-08 1983-04-14 Meisei Electric Co Ltd Data pulse reception circuit
JP2003069456A (en) * 2001-08-28 2003-03-07 Dx Antenna Co Ltd Signal changeover device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5862954A (en) * 1981-10-08 1983-04-14 Meisei Electric Co Ltd Data pulse reception circuit
JPH0239904B2 (en) * 1981-10-08 1990-09-07 Meisei Denki Kk
JP2003069456A (en) * 2001-08-28 2003-03-07 Dx Antenna Co Ltd Signal changeover device

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