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JPS57109434A - Automatic equalizer - Google Patents

Automatic equalizer

Info

Publication number
JPS57109434A
JPS57109434A JP18394880A JP18394880A JPS57109434A JP S57109434 A JPS57109434 A JP S57109434A JP 18394880 A JP18394880 A JP 18394880A JP 18394880 A JP18394880 A JP 18394880A JP S57109434 A JPS57109434 A JP S57109434A
Authority
JP
Japan
Prior art keywords
output
discriminator
selector
value
divergence
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
JP18394880A
Other languages
Japanese (ja)
Inventor
Mikiro Eguchi
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 JP18394880A priority Critical patent/JPS57109434A/en
Publication of JPS57109434A publication Critical patent/JPS57109434A/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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03038—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a non-recursive structure

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)

Abstract

PURPOSE:To operate efficiently lines and equipments and to process data rapidly, by correcting contents of a compensation register 9 normally by the outout value of the first discriminator, and compensating them at a divergence time by the output value of the second discriminator. CONSTITUTION:A detector 18 to detect the divergence state of the first discriminator 6 and the second discriminator 17 is connected to the output terminal of an output adder 5. By the output signal of the detector 18, a selector 19 selects and outputs output values of the first and the second discriminators alternatively and gives them to respective adders of a compensation adder group 4. Then, when the number of clear pulses which are given from a timer 34 at every constant time exceeds a constant value, the selector 19 discriminates that the automatic equalizer is in the divergence state, and the selector 19 selects the output of the second discriminator 17. After that, the output of a counter 33 becomes ''0'' in the synchronizing state, and the normal automatic equalizing operation is performed.
JP18394880A 1980-12-26 1980-12-26 Automatic equalizer Pending JPS57109434A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18394880A JPS57109434A (en) 1980-12-26 1980-12-26 Automatic equalizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18394880A JPS57109434A (en) 1980-12-26 1980-12-26 Automatic equalizer

Publications (1)

Publication Number Publication Date
JPS57109434A true JPS57109434A (en) 1982-07-07

Family

ID=16144610

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18394880A Pending JPS57109434A (en) 1980-12-26 1980-12-26 Automatic equalizer

Country Status (1)

Country Link
JP (1) JPS57109434A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098588A2 (en) * 1982-07-08 1984-01-18 Siemens Aktiengesellschaft Adaptive equalizer for the equalization of multilevel signals
JPS6239923A (en) * 1985-08-15 1987-02-20 Nec Corp Demodulation system
JPS6239922A (en) * 1985-08-15 1987-02-20 Nec Corp Digital demodulation system
JPS6462033A (en) * 1987-09-02 1989-03-08 Canon Kk Automatic equalizer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55700A (en) * 1978-06-13 1980-01-07 Ibm Device for training adaptive equalizer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55700A (en) * 1978-06-13 1980-01-07 Ibm Device for training adaptive equalizer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0098588A2 (en) * 1982-07-08 1984-01-18 Siemens Aktiengesellschaft Adaptive equalizer for the equalization of multilevel signals
JPS6239923A (en) * 1985-08-15 1987-02-20 Nec Corp Demodulation system
JPS6239922A (en) * 1985-08-15 1987-02-20 Nec Corp Digital demodulation system
JPS6462033A (en) * 1987-09-02 1989-03-08 Canon Kk Automatic equalizer

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