JPS56156053A - Waveform shaping circuit - Google Patents

Waveform shaping circuit

Info

Publication number
JPS56156053A
JPS56156053A JP5886280A JP5886280A JPS56156053A JP S56156053 A JPS56156053 A JP S56156053A JP 5886280 A JP5886280 A JP 5886280A JP 5886280 A JP5886280 A JP 5886280A JP S56156053 A JPS56156053 A JP S56156053A
Authority
JP
Japan
Prior art keywords
duty
waveform shaping
output
negates
proportional
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
JP5886280A
Other languages
Japanese (ja)
Other versions
JPS6051295B2 (en
Inventor
Yuji Nishi
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.)
Denso Ten Ltd
Original Assignee
Denso Ten 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 Denso Ten Ltd filed Critical Denso Ten Ltd
Priority to JP5886280A priority Critical patent/JPS6051295B2/en
Publication of JPS56156053A publication Critical patent/JPS56156053A/en
Publication of JPS6051295B2 publication Critical patent/JPS6051295B2/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Manipulation Of Pulses (AREA)

Abstract

PURPOSE:To mantain a constant duty for an output square waveform, by providing an automatic control system that negates the duty fluctuation of an output of the waveform shaping part. CONSTITUTION:An automatic control system that negates a duty fluctuation comprises a duty detecting part 4 which delivers the mean high-level voltage VH proportional to the rate of time during which a high level is obtained in a cycle of a square wave signal OUT plus the mean low-level voltage VL proportional to the rate of time during which a low level is obtained in a cycle rspectively after receiving a part of the output of a waveform shaping part 2 and a duty comparing part 5 that controls the threshold value VS of part 2 in the direction where a difference if any between VH and VL is reduced after comparing VH with VL. If the gain of an amplifier A2 is referred to as GA2, VH-VL=VS/GA2 is obtained. Thus a control error of VS/GA2 is produced in a normal state. However, if GA2 infinity is satisfied, VH=VL is obtained. Accordingly it is conceivable that VS always varies so as to satisfy VH=VL.
JP5886280A 1980-05-02 1980-05-02 Waveform shaping circuit Expired JPS6051295B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5886280A JPS6051295B2 (en) 1980-05-02 1980-05-02 Waveform shaping circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5886280A JPS6051295B2 (en) 1980-05-02 1980-05-02 Waveform shaping circuit

Publications (2)

Publication Number Publication Date
JPS56156053A true JPS56156053A (en) 1981-12-02
JPS6051295B2 JPS6051295B2 (en) 1985-11-13

Family

ID=13096520

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5886280A Expired JPS6051295B2 (en) 1980-05-02 1980-05-02 Waveform shaping circuit

Country Status (1)

Country Link
JP (1) JPS6051295B2 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143626A (en) * 1982-02-22 1983-08-26 Hitachi Ltd Data discriminating circuit
JPS59127337U (en) * 1983-02-17 1984-08-27 ソニー株式会社 Waveform shaping circuit
JPS6094527A (en) * 1983-09-30 1985-05-27 テクトロニツクス・インコーポレイテツド Rectangular pulse generator
US4540897A (en) * 1982-06-25 1985-09-10 Pioneer Electronic Corporation Digital modulation signal reading device
JPS6135440U (en) * 1984-07-31 1986-03-04 株式会社アドバンテスト clock shaping circuit
US4577155A (en) * 1982-09-16 1986-03-18 Tokyo Shibaura Denki Kabushiki Kaisha Data extracting circuit
JPS6168523U (en) * 1984-10-09 1986-05-10
JPS62111516A (en) * 1985-11-09 1987-05-22 Victor Co Of Japan Ltd Pulse width automatic correction circuit
DE4407054C2 (en) * 1994-03-03 1999-11-18 Philips Patentverwaltung Circuit arrangement for converting sinusoidal signals into rectangular signals

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58143626A (en) * 1982-02-22 1983-08-26 Hitachi Ltd Data discriminating circuit
US4540897A (en) * 1982-06-25 1985-09-10 Pioneer Electronic Corporation Digital modulation signal reading device
US4577155A (en) * 1982-09-16 1986-03-18 Tokyo Shibaura Denki Kabushiki Kaisha Data extracting circuit
JPS59127337U (en) * 1983-02-17 1984-08-27 ソニー株式会社 Waveform shaping circuit
JPH0246113Y2 (en) * 1983-02-17 1990-12-05
JPS6094527A (en) * 1983-09-30 1985-05-27 テクトロニツクス・インコーポレイテツド Rectangular pulse generator
JPH0355050B2 (en) * 1983-09-30 1991-08-22
JPS6135440U (en) * 1984-07-31 1986-03-04 株式会社アドバンテスト clock shaping circuit
JPS6168523U (en) * 1984-10-09 1986-05-10
JPS62111516A (en) * 1985-11-09 1987-05-22 Victor Co Of Japan Ltd Pulse width automatic correction circuit
DE4407054C2 (en) * 1994-03-03 1999-11-18 Philips Patentverwaltung Circuit arrangement for converting sinusoidal signals into rectangular signals

Also Published As

Publication number Publication date
JPS6051295B2 (en) 1985-11-13

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