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특허 상세정보

MyON담기
내보내기 페이스북 공유 카카오톡 공유

Black pattern correction for charge transfer sensor

특허상세정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) H04N-009/64   
미국특허분류(USC) 348/241 ; 348/243 ; 348/245 ; 348/251
출원번호 US-0995955 (1997-12-22)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Woods
인용정보 피인용 횟수 : 63  인용 특허 : 10
초록
▼

An electronic imaging device employs black pattern correction for dark current in a charge transfer image sensor. The sensor is composed of image pixels having a characteristic black pattern of dark current in which the amplitude of the dark current for each pixel is dependent upon exposure time. A reference dark frame exposure is captured from the image sensor in the absence of light and dark frame pixel values are obtained. An exposure section regulates the exposure time of image light upon the image sensor and provides a corresponding plurality of ima...

대표
청구항
▼

[ What is claimed is:] [1.] A electronic imaging device employing black pattern correction for dark current in an image sensor, said dark current imposing a fixed-pattern noise on image signals obtained by exposing the image sensor to image light from a subject, said imaging device comprising:a charge transfer image sensor composed of image pixels having a characteristic black pattern of dark current corresponding to the array of pixels in the sensor, the amplitude of the dark current for each pixel being dependent upon exposure time;means for capturing ...

이 특허에 인용된 특허 (10)

  1. Zortea Anthony E. (Pipersville PA) Westerink Peter (Mt. Laurel NJ). Automatic digital black shading for cameras. USP1996025493334.
  2. Stekelenburg Michael A. W. (Eindhoven NLX). Charge-coupled device, image sensor arrangement and camera provided with such an image sensor arrangement. USP1994065325412.
  3. Sudo Fumihiko (Kanagawa JPX) Asaida Takashi (Kanagawa JPX). Dark current and defective pixel correction apparatus. USP1993125272536.
  4. Oda Kazuya (Tokyo JPX) Kawaoka Yoshiki (Tokyo JPX) Konishi Masahiro (Tokyo JPX). Electronic still camera which reduces the influence of smear and dark current. USP1992105153732.
  5. Takase Osamu (Yokohama JPX). Image reading apparatus having a function for correcting dark signals generated in a photoelectric conversion element. USP1994015278658.
  6. Tsunekawa Tokuichi (Yokohama JPX). Image sensor. USP1984114484223.
  7. Houchin James S. (Rochester NY) Parulski Kenneth A. (Rochester NY). Method and apparatus for pixel non-uniformity correction. USP1991095047861.
  8. Lee Hyo S. (Suweon KRX). Method for improving the resolution of three CCD camera and apparatus thereof. USP1995085442394.
  9. Kimura Kei (Kanagawa JPX). Method of correcting image signal. USP1993015181118.
  10. White James M. (Mahopac NY). Solid state image scanning system for producing a binary output. USP1979114173772.

이 특허를 인용한 특허 피인용횟수: 63

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  3. Rossi, Giuseppe; Agranov, Gennadiy A.. Apparatus for determining temperature of an active pixel imager and correcting temperature induced variations in an imager. USP2005126974973.
  4. Zyzdryn,Gregory. Biometric imaging capture system and method. USP2007107277562.
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  6. McClurg,George W; Carver,John F; Scott,Walter G; Zyzdryn,Gregory. Biometric imaging system and method. USP2007047203344.
  7. Tay, Hiok Nam. CMOS image sensor with noise cancellation. USP2004096795117.
  8. Topfer, Karin; Scott, Richard T.; DeHority, John W.. Dark correction for digital X-ray detector. USP2010117832928.
  9. Boucly, Alain; Inglese, Jean Marc; Congy, Philippe. Dental radiology apparatus and signal processing method used therewith. USP2009107608834.
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