Image processing apparatus with back porch period sampling and clamping
    1.
    发明授权
    Image processing apparatus with back porch period sampling and clamping 失效
    具有后沿采样和夹紧的图像处理设备

    公开(公告)号:US5325187A

    公开(公告)日:1994-06-28

    申请号:US973540

    申请日:1992-11-09

    摘要: An image processing apparatus adds a plurality of input digital chroma image data and input digital luminance image data during a back porch of the input image data and outputs average value data. A subtractor subtracts the average value data, from the input digital chroma image data and input digital luminance image data and outputs data, using a first subtracting method for the chroma image data and a second subtracting method, different from the first subtracting method, for the luminance image data. A memory stores the data output by the subtractor. The input digital chroma image data and the input digital luminance image data are sampled at a frequency an integral number of times as great as a frequency of a subcarrier, and are added.

    摘要翻译: 图像处理装置在输入图像数据的后沿添加多个输入数字色度图像数据和输入数字亮度图像数据,并输出平均值数据。 减法器从输入数字色度图像数据和输入的数字亮度图像数据中减去平均值数据,并且使用与第一减法方法不同的色度图像数据的第一减法和与第一减法方法不同的第二减法来输出数据 亮度图像数据。 存储器存储减法器输出的数据。 输入数字色度图像数据和输入数字亮度图像数据以与子载波的频率一样大的整数倍的频率进行采样,并被相加。