JPS57109468A - Flare correcting circuit - Google Patents

Flare correcting circuit

Info

Publication number
JPS57109468A
JPS57109468A JP55185884A JP18588480A JPS57109468A JP S57109468 A JPS57109468 A JP S57109468A JP 55185884 A JP55185884 A JP 55185884A JP 18588480 A JP18588480 A JP 18588480A JP S57109468 A JPS57109468 A JP S57109468A
Authority
JP
Japan
Prior art keywords
signal
circuit
output
nonlinear
flare
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
JP55185884A
Other languages
Japanese (ja)
Other versions
JPH027225B2 (en
Inventor
Koichi Fujiki
Mitsuhiko Okuhara
Taizo Nishino
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP55185884A priority Critical patent/JPS57109468A/en
Publication of JPS57109468A publication Critical patent/JPS57109468A/en
Publication of JPH027225B2 publication Critical patent/JPH027225B2/ja
Granted 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
    • H04N5/21—Circuitry for suppressing or minimising disturbance, e.g. moiré or halo

Landscapes

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

Abstract

PURPOSE:To correct a flare, by providing an output of a clamping circuit, and that which has mixed this output through a nonlinear circuit, to an integration circuit, and generating a correcting signal being approximate to a flare characteristic. CONSTITUTION:When a video signal VS1 is applied to an input terminal IN, it is clamped by a clamping circuit 1 and is fixed to a direct current. The fixed signal is applied to the base of TR4 through a resistance R14 and a variable resistance R18 from the emitter of a transistor (TR)3. When a variable resistance R17 or R18 is varied, a nonlinear signal is outputted from a nonlinear circuit 6. This nonlinear signal, and a signal which has passed through a resistance R15 from the clamping circuit 1 are mixed in the base of TR4, and are applied to an integration circuit 2 from the emitter of TR4. The integration circuit 2 detects DC voltage of a mean value of a signal appearing in the emitter of TR1, chops is by a chopper 3, and mixes an output of the chopper 3 and an output of the clamping circuit 1, by which a desired flare correcting signal is obtained.
JP55185884A 1980-12-26 1980-12-26 Flare correcting circuit Granted JPS57109468A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP55185884A JPS57109468A (en) 1980-12-26 1980-12-26 Flare correcting circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55185884A JPS57109468A (en) 1980-12-26 1980-12-26 Flare correcting circuit

Publications (2)

Publication Number Publication Date
JPS57109468A true JPS57109468A (en) 1982-07-07
JPH027225B2 JPH027225B2 (en) 1990-02-16

Family

ID=16178556

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55185884A Granted JPS57109468A (en) 1980-12-26 1980-12-26 Flare correcting circuit

Country Status (1)

Country Link
JP (1) JPS57109468A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61179678A (en) * 1985-02-05 1986-08-12 Hitachi Denshi Ltd Signal processing system
JPS61263373A (en) * 1985-05-17 1986-11-21 Hitachi Denshi Ltd Flare correction system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61179678A (en) * 1985-02-05 1986-08-12 Hitachi Denshi Ltd Signal processing system
JPS61263373A (en) * 1985-05-17 1986-11-21 Hitachi Denshi Ltd Flare correction system

Also Published As

Publication number Publication date
JPH027225B2 (en) 1990-02-16

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