发明授权
US4739393A Circuit for performing white balance correction using two color temperature sensors 失效
使用两个色温传感器执行白平衡校正的电路

  • 专利标题: Circuit for performing white balance correction using two color temperature sensors
  • 专利标题(中): 使用两个色温传感器执行白平衡校正的电路
  • 申请号: US925943
    申请日: 1986-11-03
  • 公开(公告)号: US4739393A
    公开(公告)日: 1988-04-19
  • 发明人: Mitsuo SekiKeiichi Tanii
  • 申请人: Mitsuo SekiKeiichi Tanii
  • 申请人地址: JPX Osaka
  • 专利权人: Sanyo Electric Co., Ltd.
  • 当前专利权人: Sanyo Electric Co., Ltd.
  • 当前专利权人地址: JPX Osaka
  • 优先权: JPX60-247472 19851105; JPX60-247473 19851105; JPX60-284969 19851218
  • 主分类号: H04N9/73
  • IPC分类号: H04N9/73
Circuit for performing white balance correction using two color
temperature sensors
摘要:
A circuit for performing white balance correction using two color temperature sensors includes an image sensor for converting an image of an object to a color image signal, a luminance signal/color signal separator for separating an output of the image sensor into a luminance signal and a color signal, and at least one level correction means for correcting a level of the color signal output from the luminance signal/color signal separator, based on a first white balance correction signal or a second white balance correction signal supplied through a switching or disabling means. A first white balance correction signal generator is provided independently of the image sensor and generates the first white balance correction signal correlating to a color temperature of the object. A second white balance correction signal generator generates the second white balance correction signal correlating to the color temperature of the object, based on the luminance signal output from the luminance signal/color signal separator and the color signal having the level corrected by the level correction means.
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