JPS56161779A - Shading compensator - Google Patents

Shading compensator

Info

Publication number
JPS56161779A
JPS56161779A JP6426980A JP6426980A JPS56161779A JP S56161779 A JPS56161779 A JP S56161779A JP 6426980 A JP6426980 A JP 6426980A JP 6426980 A JP6426980 A JP 6426980A JP S56161779 A JPS56161779 A JP S56161779A
Authority
JP
Japan
Prior art keywords
envelope
chroma signal
image sensing
reduce
control means
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
JP6426980A
Other languages
Japanese (ja)
Other versions
JPH0368598B2 (en
Inventor
Kenji Kimura
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.)
Olympus Corp
Original Assignee
Olympus Optical 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 Olympus Optical Co Ltd filed Critical Olympus Optical Co Ltd
Priority to JP6426980A priority Critical patent/JPS56161779A/en
Publication of JPS56161779A publication Critical patent/JPS56161779A/en
Publication of JPH0368598B2 publication Critical patent/JPH0368598B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/80—Camera processing pipelines; Components thereof
    • H04N23/81—Camera processing pipelines; Components thereof for suppressing or minimising disturbance in the image signal generation

Abstract

PURPOSE:To reduce envelope distortion remarkably, by providing an automatic level control means in which the gain is made variable with time so as to reduce level of chroma signal is to a given value by the timing in synchronizing with the horizontal scanning in an image sensing means. CONSTITUTION:From a video output Ev corresponding to an objective 12 obtained at an image sensing means 16, a luminance signal Ey and a chroma signal Ec1 are respectively separated via an LPF18 and BPF20 to input the chroma signal to an automatic level control means 34. Further, at the level control means 34, in the timing in synchronizing with the horizontal scanning in an image sensing means 16, the gain of an AGC circuit 22 is changed with time so as to reduce the level of a chroma signal Ec2 to a given value. Thus, even if an envelope distortion of a color carrier which cannot be corrected with a parabola signal VP superimposed on a focus voltage VF is present, the unsharp leading of the envelope is completely compensated to obtain the color carrier with a flat envelope.
JP6426980A 1980-05-15 1980-05-15 Shading compensator Granted JPS56161779A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6426980A JPS56161779A (en) 1980-05-15 1980-05-15 Shading compensator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6426980A JPS56161779A (en) 1980-05-15 1980-05-15 Shading compensator

Publications (2)

Publication Number Publication Date
JPS56161779A true JPS56161779A (en) 1981-12-12
JPH0368598B2 JPH0368598B2 (en) 1991-10-29

Family

ID=13253308

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6426980A Granted JPS56161779A (en) 1980-05-15 1980-05-15 Shading compensator

Country Status (1)

Country Link
JP (1) JPS56161779A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138925A (en) * 1974-09-30 1976-03-31 Matsushita Electric Ind Co Ltd Irosheedeinguhoseikairo
JPS5513188A (en) * 1978-04-27 1980-01-30 Regehr Ulrich Turning separator
JPS5513187A (en) * 1978-04-21 1980-01-30 Standard Oil Co Preparation of mutiple component oxide complex catalyst

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138925A (en) * 1974-09-30 1976-03-31 Matsushita Electric Ind Co Ltd Irosheedeinguhoseikairo
JPS5513187A (en) * 1978-04-21 1980-01-30 Standard Oil Co Preparation of mutiple component oxide complex catalyst
JPS5513188A (en) * 1978-04-27 1980-01-30 Regehr Ulrich Turning separator

Also Published As

Publication number Publication date
JPH0368598B2 (en) 1991-10-29

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