Invention Grant
US08218029B2 Image taking apparatus, correction circuit and correction method 失效
摄像装置,校正电路及校正方法

  • Patent Title: Image taking apparatus, correction circuit and correction method
  • Patent Title (中): 摄像装置,校正电路及校正方法
  • Application No.: US12546729
    Application Date: 2009-08-25
  • Publication No.: US08218029B2
    Publication Date: 2012-07-10
  • Inventor: Takahiro Nagai
  • Applicant: Takahiro Nagai
  • Applicant Address: JP Tokyo
  • Assignee: Sony Corporation
  • Current Assignee: Sony Corporation
  • Current Assignee Address: JP Tokyo
  • Agency: Frommer Lawrence & Haug LLP
  • Agent William S. Frommer
  • Priority: JPP2008-217256 20080826
  • Main IPC: H04N5/235
  • IPC: H04N5/235
Image taking apparatus, correction circuit and correction method
Abstract:
Disclosed herein is an image taking apparatus including an image taking device, a gain adjustment circuit, and a correction circuit. The image taking device operates with timings based on a frame rate determined in advance and the total number of horizontal lines, has an electronic shutter allowing a shutter speed to be adjusted, receives light in a period equal to the shutter speed of the electronic shutter and carries out an opto-electrical conversion process on the light for every horizontal line in order to generate a predetermined signal. The gain adjustment circuit adjusts the gain of the electrical signal received from the image taking device. The correction circuit compares an image taking video signal with a reference video signal to compute a flicker component as a component oriented in the vertical direction of an image represented by the image taking video signal in a flicker correction process of eliminating flickers.
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