JPS5715593A - Integrated circuit for peak detection - Google Patents

Integrated circuit for peak detection

Info

Publication number
JPS5715593A
JPS5715593A JP8922680A JP8922680A JPS5715593A JP S5715593 A JPS5715593 A JP S5715593A JP 8922680 A JP8922680 A JP 8922680A JP 8922680 A JP8922680 A JP 8922680A JP S5715593 A JPS5715593 A JP S5715593A
Authority
JP
Japan
Prior art keywords
voltage
burst
burst signal
base
period
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
JP8922680A
Other languages
Japanese (ja)
Other versions
JPH0154913B2 (en
Inventor
Himio Nakagawa
Takatoshi Togami
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 JP8922680A priority Critical patent/JPS5715593A/en
Publication of JPS5715593A publication Critical patent/JPS5715593A/en
Publication of JPH0154913B2 publication Critical patent/JPH0154913B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/64—Circuits for processing colour signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Processing Of Color Television Signals (AREA)

Abstract

PURPOSE:To make unnecessary complicated burst interleaving circuit, by changing a clamp voltage of a clamp circuit at a burst signal and video signal period and operating the differential amplifier at the post stage only at the burst signal period. CONSTITUTION:A burst gate pulse from an input terminal 2 is at 1, that is, at 1, that is, at the burst signal period, then a voltage E3 is obtained at the base of a transistor (TR)Q8. When a negative peak of a burst signal is lower than E3- Vbe (where; Vbe is a voltage between the base and the emitter of the TRQ8), the TRQ8 is conductive, a capacitor C2 is charged and the negative side of the burst signal is clamped to E3-Vbc. On the other hand, a TRQ12 is conductive only at the burst signal period with the burst gate pulse to flow the operating current of TRsQ9, Q10 cinstituting the differential amplifier. Thus, at this period, when the base voltage of the TRQ9 is higher than the base voltage of the TRQ10, a current flows to the collector of the TRQ9 to increase the DC voltage at an output terminal 3.
JP8922680A 1980-07-02 1980-07-02 Integrated circuit for peak detection Granted JPS5715593A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8922680A JPS5715593A (en) 1980-07-02 1980-07-02 Integrated circuit for peak detection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8922680A JPS5715593A (en) 1980-07-02 1980-07-02 Integrated circuit for peak detection

Publications (2)

Publication Number Publication Date
JPS5715593A true JPS5715593A (en) 1982-01-26
JPH0154913B2 JPH0154913B2 (en) 1989-11-21

Family

ID=13964818

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8922680A Granted JPS5715593A (en) 1980-07-02 1980-07-02 Integrated circuit for peak detection

Country Status (1)

Country Link
JP (1) JPS5715593A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63141487A (en) * 1986-12-03 1988-06-13 Matsushita Electric Ind Co Ltd Automatic chroma saturation control circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52142418A (en) * 1976-05-21 1977-11-28 Matsushita Electric Ind Co Ltd Automatic color saturation degree control device
JPS54113212A (en) * 1978-02-24 1979-09-04 Hitachi Ltd Gate-type peak detector circuit

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52142418A (en) * 1976-05-21 1977-11-28 Matsushita Electric Ind Co Ltd Automatic color saturation degree control device
JPS54113212A (en) * 1978-02-24 1979-09-04 Hitachi Ltd Gate-type peak detector circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63141487A (en) * 1986-12-03 1988-06-13 Matsushita Electric Ind Co Ltd Automatic chroma saturation control circuit

Also Published As

Publication number Publication date
JPH0154913B2 (en) 1989-11-21

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