JPS54118149A - Comparator circuit - Google Patents

Comparator circuit

Info

Publication number
JPS54118149A
JPS54118149A JP2636878A JP2636878A JPS54118149A JP S54118149 A JPS54118149 A JP S54118149A JP 2636878 A JP2636878 A JP 2636878A JP 2636878 A JP2636878 A JP 2636878A JP S54118149 A JPS54118149 A JP S54118149A
Authority
JP
Japan
Prior art keywords
comparator
data signal
limiter
constitution
prevented
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.)
Granted
Application number
JP2636878A
Other languages
Japanese (ja)
Other versions
JPS6224966B2 (en
Inventor
Ikuo Yoshida
Gozo Kage
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 JP2636878A priority Critical patent/JPS54118149A/en
Priority to US06/018,396 priority patent/US4339727A/en
Publication of JPS54118149A publication Critical patent/JPS54118149A/en
Publication of JPS6224966B2 publication Critical patent/JPS6224966B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • H03K5/08—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding
    • H03K5/082—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold
    • H03K5/086—Shaping pulses by limiting; by thresholding; by slicing, i.e. combined limiting and thresholding with an adaptive threshold generated by feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/003—Changing the DC level
    • 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

  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Manipulation Of Pulses (AREA)
  • Dc Digital Transmission (AREA)

Abstract

PURPOSE:To obtain a comparator circuit which contains a means to compensate the shift of the comparison reference value caused by the effect of the low frequency component contained in the data signal. CONSTITUTION:Input data signal x6 passes through high-band pass filter 3 consisting of capacitor 12 and resistor 13 to be cut off the DC component and then limited for its amplitude through limiter 4. The signals passed through limiter 4 is compared with the comparison reference voltge (zero level) at comparator 5. And output x4 of comparator 5 is fed back to the non-reverse input terminal via resistor 14. In such constitution, the voltage can be prevented from dropping down to the zero level at the data signal input part of the comparator, and at the same time the miscomparison caused by the transient reply can be prevented at the signal input time.
JP2636878A 1978-03-07 1978-03-07 Comparator circuit Granted JPS54118149A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2636878A JPS54118149A (en) 1978-03-07 1978-03-07 Comparator circuit
US06/018,396 US4339727A (en) 1978-03-07 1979-03-07 Waveform converting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2636878A JPS54118149A (en) 1978-03-07 1978-03-07 Comparator circuit

Publications (2)

Publication Number Publication Date
JPS54118149A true JPS54118149A (en) 1979-09-13
JPS6224966B2 JPS6224966B2 (en) 1987-06-01

Family

ID=12191549

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2636878A Granted JPS54118149A (en) 1978-03-07 1978-03-07 Comparator circuit

Country Status (1)

Country Link
JP (1) JPS54118149A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126318A (en) * 1983-01-08 1984-07-20 Fujitsu Ltd Clock regenerating circuit
JPS6118636U (en) * 1984-07-06 1986-02-03 アルプス電気株式会社 Waveform shaping circuit device
JPS63311815A (en) * 1987-06-12 1988-12-20 Matsushita Electric Ind Co Ltd Waveform shaping circuit

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5082963A (en) * 1973-11-05 1975-07-04
JPS5172253A (en) * 1974-12-20 1976-06-22 Hitachi Ltd SADENATSUHIKAKUKAIRO
JPS51128444U (en) * 1975-04-15 1976-10-16

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5082963A (en) * 1973-11-05 1975-07-04
JPS5172253A (en) * 1974-12-20 1976-06-22 Hitachi Ltd SADENATSUHIKAKUKAIRO
JPS51128444U (en) * 1975-04-15 1976-10-16

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126318A (en) * 1983-01-08 1984-07-20 Fujitsu Ltd Clock regenerating circuit
JPS6118636U (en) * 1984-07-06 1986-02-03 アルプス電気株式会社 Waveform shaping circuit device
JPS63311815A (en) * 1987-06-12 1988-12-20 Matsushita Electric Ind Co Ltd Waveform shaping circuit

Also Published As

Publication number Publication date
JPS6224966B2 (en) 1987-06-01

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