JPS54159845A - Waveform equalizing circuit - Google Patents

Waveform equalizing circuit

Info

Publication number
JPS54159845A
JPS54159845A JP6926078A JP6926078A JPS54159845A JP S54159845 A JPS54159845 A JP S54159845A JP 6926078 A JP6926078 A JP 6926078A JP 6926078 A JP6926078 A JP 6926078A JP S54159845 A JPS54159845 A JP S54159845A
Authority
JP
Japan
Prior art keywords
control
signals
circuit
polarity
weight coefficient
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
JP6926078A
Other languages
Japanese (ja)
Inventor
Motoi Yagi
Masayuki Katakura
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP6926078A priority Critical patent/JPS54159845A/en
Publication of JPS54159845A publication Critical patent/JPS54159845A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Filters That Use Time-Delay Elements (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To prevent the deflection of the polarity of control signals dependent upon the DC off-set voltage by superposing signals, which have the polarity inverted alternately synchronously with the weight coefficient of each weighting circuit and have a fixed minute amplitude, to control signals. CONSTITUTION:A filter characteristic having a desired impulse response is given to transversal filter 1 by applying an arbitrary weight coefficient to the input/output of each tap of delay element 11 having plural taps by weighting circuit 12. Then, serial control signals Vw which control successively the weight coefficient in each arrangement direction of delay element 11 are generated from output signals Vout in control circuit 2. However, signals which have the polarity inverted alternately synchronously with the successive control of the coefficient in weighting circuit 12 and have a fixed minute amplitude are superposed onto control signals Vw. Thus, the deflection of the polarity of control voltage Vw dependent upon the DC off- set voltage is prevented in differentiating circuit 15 and positive/negative decision circuit 17.
JP6926078A 1978-06-08 1978-06-08 Waveform equalizing circuit Pending JPS54159845A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6926078A JPS54159845A (en) 1978-06-08 1978-06-08 Waveform equalizing circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6926078A JPS54159845A (en) 1978-06-08 1978-06-08 Waveform equalizing circuit

Publications (1)

Publication Number Publication Date
JPS54159845A true JPS54159845A (en) 1979-12-18

Family

ID=13397551

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6926078A Pending JPS54159845A (en) 1978-06-08 1978-06-08 Waveform equalizing circuit

Country Status (1)

Country Link
JP (1) JPS54159845A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56166620A (en) * 1980-05-28 1981-12-21 Toshiba Corp Automatic equalizer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56166620A (en) * 1980-05-28 1981-12-21 Toshiba Corp Automatic equalizer
JPS6327895B2 (en) * 1980-05-28 1988-06-06 Toshiba Kk

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