JPS5644274A - Defect compensating unit of solid image pickup element - Google Patents

Defect compensating unit of solid image pickup element

Info

Publication number
JPS5644274A
JPS5644274A JP12107279A JP12107279A JPS5644274A JP S5644274 A JPS5644274 A JP S5644274A JP 12107279 A JP12107279 A JP 12107279A JP 12107279 A JP12107279 A JP 12107279A JP S5644274 A JPS5644274 A JP S5644274A
Authority
JP
Japan
Prior art keywords
image pickup
solid image
memory
pickup element
defect compensating
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
JP12107279A
Other languages
Japanese (ja)
Inventor
Hideo Cho
Toshiharu Inamoto
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP12107279A priority Critical patent/JPS5644274A/en
Publication of JPS5644274A publication Critical patent/JPS5644274A/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
    • H04N25/63—Noise processing, e.g. detecting, correcting, reducing or removing noise applied to dark current

Abstract

PURPOSE:To reduce the memory capacity considerably, by storing only position information of defective parts of the solid image pickup element into the memory in the defect compensating unit for the solid image pickup element of the solid image pickup device. CONSTITUTION:Vertical counter 4 is set to a certain value, and horizontal position information of defective parts on the next horizontal scanning line stored in memory 8 is read out during scanning on one horizontal scanning line and is compared with contents of horizontal counter 5 during the next horizontal scanning time; and if they agree with each other, an coincidence pulse is supplied to defect compensating circuit 3 through logical operation circuit 11, and defect compensating circuit 3 performs the hold operation, namely, uses the just preceding picture element signal in stead of the picture element signal from the defective part to perform the compensation operation each time the coincidence pulse is supplied. Since defective position information of solid image pickup element 1 is stored in memory 8, the memory capacity can be reduced considerably in comparison with the case where information indicating presence and absence of defects for all positions of the solid image pickup element is stored in the memory conventionally.
JP12107279A 1979-09-20 1979-09-20 Defect compensating unit of solid image pickup element Pending JPS5644274A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12107279A JPS5644274A (en) 1979-09-20 1979-09-20 Defect compensating unit of solid image pickup element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12107279A JPS5644274A (en) 1979-09-20 1979-09-20 Defect compensating unit of solid image pickup element

Publications (1)

Publication Number Publication Date
JPS5644274A true JPS5644274A (en) 1981-04-23

Family

ID=14802139

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12107279A Pending JPS5644274A (en) 1979-09-20 1979-09-20 Defect compensating unit of solid image pickup element

Country Status (1)

Country Link
JP (1) JPS5644274A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61228782A (en) * 1985-04-03 1986-10-11 Nec Corp Image pickup device
US5047863A (en) * 1990-05-24 1991-09-10 Polaroid Corporation Defect correction apparatus for solid state imaging devices including inoperative pixel detection

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61228782A (en) * 1985-04-03 1986-10-11 Nec Corp Image pickup device
US5047863A (en) * 1990-05-24 1991-09-10 Polaroid Corporation Defect correction apparatus for solid state imaging devices including inoperative pixel detection

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