Invention Grant
US07391449B2 Method of processing the black level of a pixel matrix of an image sensor, and corresponding sensor 有权
处理图像传感器的像素矩阵的黑色电平的方法以及相应的传感器

  • Patent Title: Method of processing the black level of a pixel matrix of an image sensor, and corresponding sensor
  • Patent Title (中): 处理图像传感器的像素矩阵的黑色电平的方法以及相应的传感器
  • Application No.: US10870336
    Application Date: 2004-06-17
  • Publication No.: US07391449B2
    Publication Date: 2008-06-24
  • Inventor: Laurent Simony
  • Applicant: Laurent Simony
  • Applicant Address: FR Montrouge
  • Assignee: STMicroelectronics S.A.
  • Current Assignee: STMicroelectronics S.A.
  • Current Assignee Address: FR Montrouge
  • Agency: Gardere Wynne Sewell LLP
  • Priority: FR0307558 20030623
  • Main IPC: H04N9/64
  • IPC: H04N9/64
Method of processing the black level of a pixel matrix of an image sensor, and corresponding sensor
Abstract:
For each current image output from a pixel matrix, the digital words relative to at least one masked line of the matrix are processed to generate a current correction digital code. From this code, a black level compensation signal is generated and applied as an offset control on pixel signal amplification. If the current correct digital code does not differ from the code calculated for a previous image output by a predetermined amount, then the code for the previous image is instead used to generate the black level compensation signal.
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