JPS54149549A - Automatic equalizer - Google Patents

Automatic equalizer

Info

Publication number
JPS54149549A
JPS54149549A JP5850678A JP5850678A JPS54149549A JP S54149549 A JPS54149549 A JP S54149549A JP 5850678 A JP5850678 A JP 5850678A JP 5850678 A JP5850678 A JP 5850678A JP S54149549 A JPS54149549 A JP S54149549A
Authority
JP
Japan
Prior art keywords
signal
weight
correlator
output
circuit
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
JP5850678A
Other languages
Japanese (ja)
Inventor
Masaru Sakurai
Masayuki Katakura
Junzo Murakami
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 JP5850678A priority Critical patent/JPS54149549A/en
Publication of JPS54149549A publication Critical patent/JPS54149549A/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 cancel the DC offset of the output of a correlator effectively without complex operation by changing the arrangement of a signal-variation detecting method (e.g. integrator) in a control system for the weight-coefficient control of a weight circuit. CONSTITUTION:Output Y(t) of transversal filter 11 supplied with input X(t) is compared with a reference waveform from reference signal generator 13 by subtracter 12 and a difference signal between the both, namely, error signal E(t) is correlated with signal x(t), obtained by differentiating input X(t) by differentiator 16, by correlator 14. The output of correlator 14 is differentiated by differentiator 17 to obtain signal d(t), which is inputted to weight coefficient control circuit 15, and the weight coefficient of each weight circuit in transversal filter 11 is so controlled that error signal E(t) will be the smallest.
JP5850678A 1978-05-17 1978-05-17 Automatic equalizer Pending JPS54149549A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5850678A JPS54149549A (en) 1978-05-17 1978-05-17 Automatic equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5850678A JPS54149549A (en) 1978-05-17 1978-05-17 Automatic equalizer

Publications (1)

Publication Number Publication Date
JPS54149549A true JPS54149549A (en) 1979-11-22

Family

ID=13086296

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5850678A Pending JPS54149549A (en) 1978-05-17 1978-05-17 Automatic equalizer

Country Status (1)

Country Link
JP (1) JPS54149549A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303895A (en) * 1979-02-14 1981-12-01 Nippon Hoso Kyokai Automatic equalizer
JPS574614A (en) * 1980-05-07 1982-01-11 Rca Corp Television signal ghost eraser

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4303895A (en) * 1979-02-14 1981-12-01 Nippon Hoso Kyokai Automatic equalizer
JPS574614A (en) * 1980-05-07 1982-01-11 Rca Corp Television signal ghost eraser
JPH0223049B2 (en) * 1980-05-07 1990-05-22 Rca Licensing Corp

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