Circuit and method for correcting a digital color sampled signal
    1.
    发明授权
    Circuit and method for correcting a digital color sampled signal 有权
    用于校正数字彩色采样信号的电路和方法

    公开(公告)号:US06982752B2

    公开(公告)日:2006-01-03

    申请号:US09938046

    申请日:2001-08-23

    IPC分类号: H04N5/235 H04N5/217 G06K9/00

    CPC分类号: H04N9/646

    摘要: A method and a color correction circuit (2) for color correcting a digital color sampled signal. The color correction circuit (2) has three color input channel processing circuits (31,32,33) each of the color input channel processing circuits (31,32,33) has an adder (34) with a corrected color channel output □ a first multiplied input, a second multiplied input, a third multiplied input and an uncorrected color channel input providing for direct coupling the adder to an output of a color image sensor. The processing circuits (31,32,33) have a Low Pass Filter (35,39,40) with a filter input coupled to the uncorrected color channel input. The processing circuits (31,32,33) each also have input channel multipliers (36,42,46) and two further multipliers all having an output coupled to inputs of a respective adder (34,41,45).

    摘要翻译: 一种用于颜色校正数字彩色采样信号的方法和颜色校正电路(2)。 颜色校正电路(2)具有三个颜色输入通道处理电路(31,32,33),每个彩色输入通道处理电路(31,32,33)具有加法器(34),其具有校正的色彩通道输出 第一乘法输入,第二乘法输入,第三乘法输入和未校正的彩色通道输入,用于将加法器直接耦合到彩色图像传感器的输出。 处理电路(31,32,33)具有低通滤波器(35,39,40),滤波器输入耦合到未校正的颜色通道输入。 处理电路(31,32,33)各自还具有输入信道乘法器(36,42,46)和两个另外的乘法器,其全部具有耦合到相应加法器(34,41,45)的输入的输出。