JPS5664566A - Shading compensating device for solid state image pickup element - Google Patents

Shading compensating device for solid state image pickup element

Info

Publication number
JPS5664566A
JPS5664566A JP14078779A JP14078779A JPS5664566A JP S5664566 A JPS5664566 A JP S5664566A JP 14078779 A JP14078779 A JP 14078779A JP 14078779 A JP14078779 A JP 14078779A JP S5664566 A JPS5664566 A JP S5664566A
Authority
JP
Japan
Prior art keywords
reference voltage
shading
image pickup
solid state
state image
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
JP14078779A
Other languages
Japanese (ja)
Inventor
Yoshikazu Yokomizo
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.)
Canon Inc
Original Assignee
Canon Inc
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 Canon Inc filed Critical Canon Inc
Priority to JP14078779A priority Critical patent/JPS5664566A/en
Publication of JPS5664566A publication Critical patent/JPS5664566A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Picture Signal Circuits (AREA)
  • Transforming Light Signals Into Electric Signals (AREA)
  • Facsimile Image Signal Circuits (AREA)

Abstract

PURPOSE:To realize a shading compensation in a low-cost constitution and without giving any evil effect to the picture information signal, by securing a broken-line approximation to several points of the shading properties through the combination of several units of reference voltage. CONSTITUTION:The reference voltage generating circuit 4 produces n units of reference voltage v1, v2...vn through the potentiometer. These reference voltage are applied to the multiplexer 5 to be selected successively based on the reference voltage selection signal phiM. The selected reference signal is integrated by the integrator 6. As a result, the shading properties approximate to the broken line can be obtained, thus ensuring a control for the gain of the gain control circuit 3.
JP14078779A 1979-10-30 1979-10-30 Shading compensating device for solid state image pickup element Pending JPS5664566A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14078779A JPS5664566A (en) 1979-10-30 1979-10-30 Shading compensating device for solid state image pickup element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14078779A JPS5664566A (en) 1979-10-30 1979-10-30 Shading compensating device for solid state image pickup element

Publications (1)

Publication Number Publication Date
JPS5664566A true JPS5664566A (en) 1981-06-01

Family

ID=15276724

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14078779A Pending JPS5664566A (en) 1979-10-30 1979-10-30 Shading compensating device for solid state image pickup element

Country Status (1)

Country Link
JP (1) JPS5664566A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62109897A (en) * 1985-11-06 1987-05-21 ライオン株式会社 Liquid detergent composition
WO2002065760A1 (en) * 2001-02-07 2002-08-22 Sony Corporation Screen correcting method and imaging device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62109897A (en) * 1985-11-06 1987-05-21 ライオン株式会社 Liquid detergent composition
WO2002065760A1 (en) * 2001-02-07 2002-08-22 Sony Corporation Screen correcting method and imaging device
US7432966B2 (en) 2001-02-07 2008-10-07 Sony Corporation Image data correcting method and imaging device

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