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JPS57133776A - Solid-state image pickup device - Google Patents

Solid-state image pickup device

Info

Publication number
JPS57133776A
JPS57133776A JP56019651A JP1965181A JPS57133776A JP S57133776 A JPS57133776 A JP S57133776A JP 56019651 A JP56019651 A JP 56019651A JP 1965181 A JP1965181 A JP 1965181A JP S57133776 A JPS57133776 A JP S57133776A
Authority
JP
Japan
Prior art keywords
signal
output
converter
multiplier
ccd
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
JP56019651A
Other languages
Japanese (ja)
Inventor
Masanobu Morishita
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56019651A priority Critical patent/JPS57133776A/en
Publication of JPS57133776A publication Critical patent/JPS57133776A/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
    • H04N25/62—Detection or reduction of noise due to excess charges produced by the exposure, e.g. smear, blooming, ghost image, crosstalk or leakage between pixels
    • H04N25/625—Detection or reduction of noise due to excess charges produced by the exposure, e.g. smear, blooming, ghost image, crosstalk or leakage between pixels for the control of smear

Landscapes

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

Abstract

PURPOSE:To avoid deterioration in video quality due to smear phenomenon, by detecting a pseudo signal due to smear phenomenon and subtracting the signal from the output signal of a solid-state image pickup device. CONSTITUTION:An output signal of a CCD 21 is given to an AD converter 22, where it is converted into a digital signal. The signal of a drive signal generator 31 opeates the converter 22 during only the period when the signal only by the smear phenomenon can be obtained. The output is subtracted with a signal from a line memory 26 at a subtractor 23 and applied to a multiplier 24. The coefficient of the multiplier 24 is obtained from a coefficient generator 32. The output of the multiplier 24 is added with a signal from the line memory 26 at an adder 25 and stored again in the memory 26. The smear component stored in the line memory 26 is converted into an analog signal at a DA converter 27. When the output signal of the DA converter is subtracted from the output signal of the CCD 21 at a subtractor 28, a signal eliminating the smear component from the output signal of the CCD 21 is obtained.
JP56019651A 1981-02-13 1981-02-13 Solid-state image pickup device Pending JPS57133776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56019651A JPS57133776A (en) 1981-02-13 1981-02-13 Solid-state image pickup device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56019651A JPS57133776A (en) 1981-02-13 1981-02-13 Solid-state image pickup device

Publications (1)

Publication Number Publication Date
JPS57133776A true JPS57133776A (en) 1982-08-18

Family

ID=12005141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56019651A Pending JPS57133776A (en) 1981-02-13 1981-02-13 Solid-state image pickup device

Country Status (1)

Country Link
JP (1) JPS57133776A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814682A (en) * 1981-07-20 1983-01-27 Sony Corp solid-state imaging device
JPS5939177A (en) * 1982-08-28 1984-03-03 Hitachi Ltd Driving method of solid-state image pickup device
JPH0646338A (en) * 1985-01-10 1994-02-18 Rca Corp Television camera
US5485205A (en) * 1991-06-21 1996-01-16 Sony Corporation Smear compensation circuit for a solid state imager
EP2028844A3 (en) * 2007-08-22 2011-10-05 Nikon Corporation Electronic camera

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437487A (en) * 1977-08-29 1979-03-19 Ricoh Co Ltd Dark current compensating method for solid state pickup element
JPS554155A (en) * 1978-06-27 1980-01-12 Nec Corp Removal system for dark-current noise of solidstate pickup unit
JPS5612178A (en) * 1979-07-12 1981-02-06 Sony Corp Solid image pickup unit

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5437487A (en) * 1977-08-29 1979-03-19 Ricoh Co Ltd Dark current compensating method for solid state pickup element
JPS554155A (en) * 1978-06-27 1980-01-12 Nec Corp Removal system for dark-current noise of solidstate pickup unit
JPS5612178A (en) * 1979-07-12 1981-02-06 Sony Corp Solid image pickup unit

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5814682A (en) * 1981-07-20 1983-01-27 Sony Corp solid-state imaging device
JPS5939177A (en) * 1982-08-28 1984-03-03 Hitachi Ltd Driving method of solid-state image pickup device
JPH0646338A (en) * 1985-01-10 1994-02-18 Rca Corp Television camera
US5485205A (en) * 1991-06-21 1996-01-16 Sony Corporation Smear compensation circuit for a solid state imager
EP2028844A3 (en) * 2007-08-22 2011-10-05 Nikon Corporation Electronic camera
US8508630B2 (en) 2007-08-22 2013-08-13 Nikon Corporation Electronic camera

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