JPS57111134A - Intersymbol interference compensating circuit - Google Patents

Intersymbol interference compensating circuit

Info

Publication number
JPS57111134A
JPS57111134A JP18500780A JP18500780A JPS57111134A JP S57111134 A JPS57111134 A JP S57111134A JP 18500780 A JP18500780 A JP 18500780A JP 18500780 A JP18500780 A JP 18500780A JP S57111134 A JPS57111134 A JP S57111134A
Authority
JP
Japan
Prior art keywords
circuit
counter
counting value
output
clock
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
JP18500780A
Other languages
Japanese (ja)
Inventor
Akira Ashida
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP18500780A priority Critical patent/JPS57111134A/en
Publication of JPS57111134A publication Critical patent/JPS57111134A/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
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Dc Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)

Abstract

PURPOSE:To compensate an intersymbol interference by a digital circuit of the same type even if a transmission waveform and a transmission characteristic are different, by changing the number of discrimination and decision in accordance with a result of discrimination of the previous input data. CONSTITUTION:As for input data (a), a high frequency clock (b) and an NOT circuit 6 are brought to AND by an AND circuit 1. A counter 5 is set by a clock signal (c), and counts a high frequency clock of the circuit 1. A counting value deciding circuit 7 makes its output ''0'' in case when an output of a shift register 9 for storing data discriminated before is inputted, and a counting value of the counter 5 does not reach an optimum counting value that has been detected. Also, when said counting value has reached the optimum counting value, ''1'' is outputted, the circuit 1 is closed through the circuit 6, and after that, passing of the clock (b) is inhibited, and the constancy of an output of the counter 5 is held until the next signal (c) is inputted to the counter 5 and the counter 5 is reset. Also, an FF8 shapes a discriminating output of the circuit 7 by the signal (c) and obtains the discriminating output 10 of a binary NRZ code.
JP18500780A 1980-12-27 1980-12-27 Intersymbol interference compensating circuit Pending JPS57111134A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18500780A JPS57111134A (en) 1980-12-27 1980-12-27 Intersymbol interference compensating circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18500780A JPS57111134A (en) 1980-12-27 1980-12-27 Intersymbol interference compensating circuit

Publications (1)

Publication Number Publication Date
JPS57111134A true JPS57111134A (en) 1982-07-10

Family

ID=16163138

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18500780A Pending JPS57111134A (en) 1980-12-27 1980-12-27 Intersymbol interference compensating circuit

Country Status (1)

Country Link
JP (1) JPS57111134A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957593A (en) * 1982-09-27 1984-04-03 Nec Corp Receiving system of calling signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5957593A (en) * 1982-09-27 1984-04-03 Nec Corp Receiving system of calling signal

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