JPS5768976A - Video amplification circuit - Google Patents

Video amplification circuit

Info

Publication number
JPS5768976A
JPS5768976A JP14537280A JP14537280A JPS5768976A JP S5768976 A JPS5768976 A JP S5768976A JP 14537280 A JP14537280 A JP 14537280A JP 14537280 A JP14537280 A JP 14537280A JP S5768976 A JPS5768976 A JP S5768976A
Authority
JP
Japan
Prior art keywords
pulse
reference pulse
video
amplification circuit
playback
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
JP14537280A
Other languages
Japanese (ja)
Inventor
Takayuki Funabashi
Ikuo Kadota
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.)
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki Co Ltd
Original Assignee
Tokyo Sanyo Electric Co Ltd
Sanyo Electric Co Ltd
Sanyo Denki 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 Tokyo Sanyo Electric Co Ltd, Sanyo Electric Co Ltd, Sanyo Denki Co Ltd filed Critical Tokyo Sanyo Electric Co Ltd
Priority to JP14537280A priority Critical patent/JPS5768976A/en
Publication of JPS5768976A publication Critical patent/JPS5768976A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/148—Video amplifiers

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Television Receiver Circuits (AREA)

Abstract

PURPOSE:To perform stable DC playback, by providing a reference pulse superimposing circuit to the 1st video amplifying stage and changing the lvel of reference pulse. CONSTITUTION:A reference pulse superimposing circuit 12 provided at the 1st video amplifying stage 1 superimposes the reference pulse being the pulse signal in the same phase as the burst gate pulse on the back porch of the horizontal synchronizing section of the video signal obtained at the video detection circuit and DC playback is made at the pulse tip. An arbitrary average DC level of the video signal can be obtained by changing the level of the reference pulse.
JP14537280A 1980-10-16 1980-10-16 Video amplification circuit Pending JPS5768976A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14537280A JPS5768976A (en) 1980-10-16 1980-10-16 Video amplification circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14537280A JPS5768976A (en) 1980-10-16 1980-10-16 Video amplification circuit

Publications (1)

Publication Number Publication Date
JPS5768976A true JPS5768976A (en) 1982-04-27

Family

ID=15383692

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14537280A Pending JPS5768976A (en) 1980-10-16 1980-10-16 Video amplification circuit

Country Status (1)

Country Link
JP (1) JPS5768976A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02272982A (en) * 1989-04-14 1990-11-07 Sony Corp Luminance adjustor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02272982A (en) * 1989-04-14 1990-11-07 Sony Corp Luminance adjustor
JP2874182B2 (en) * 1989-04-14 1999-03-24 ソニー株式会社 Brightness adjustment device

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