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    • 97. 发明申请
    • CLAMP CONTROL METHOD, CLAMP CORRECTION DEVICE, IMAGE SENSOR, AND ELECTRONIC APPARATUS
    • 夹具控制方法,夹钳校正装置,图像传感器和电子装置
    • US20100128150A1
    • 2010-05-27
    • US12594972
    • 2009-02-13
    • Hiroyuki Taguchi
    • Hiroyuki Taguchi
    • H04N9/64
    • H04N5/361H04N5/2176H04N5/3745H04N5/378
    • The present invention relates to a clamp control method, a clamp correction device, an image sensor, and an electronic apparatus in which high-quality imaging without unnaturalness as a whole can be performed with low power consumption in an image sensor having a large number of pixels.A clamp correction process includes a process of calculating an average value of row pixels in a left horizontal OPB region 51L in a same scanning row and holding the average value (S31) and a process of calling the average value at the scanning of respective next rows, subtracting the average value from itself to perform predetermined clamp correction, and setting the value as a lower limit value of a black level in a row of a corresponding left effective pixel region 41L (S32). Also, the clamp correction process includes a process of calculating an average value of row pixels in a right horizontal OPB region 51R and holding the average value (S41) and a process of calling the average value at the scanning of respective next rows, subtracting the average value from itself to perform predetermined clamp correction, and setting the value as a lower limit value of a black level in a row of a corresponding left effective pixel region 41R (S42).The present invention is applicable to a CMOS image sensor or the like having a large number of pixels.
    • 本发明涉及一种钳位校正装置,图像传感器和电子设备,其中在具有大量的图像传感器的低功耗下,可以以低功耗进行整体上的无异常成像 像素。 钳位校正处理包括计算同一扫描行中的左水平OPB区域51L中的行像素的平均值并保持平均值的处理(S31)以及在扫描相应的下一行时调用平均值的处理 从其自身减去平均值以执行预定的钳位校正,并且将该值设置为相应的左有效像素区域41L的行中的黑色电平的下限值(S32)。 此外,钳位校正处理包括计算右水平OPB区域51R中的行像素的平均值并保持平均值的处理(S41)以及在各行的扫描时调用平均值的处理,减去 平均值自身执行预定的钳位校正,并将该值设定为对应的左有效像素区域41R的行中的黑电平的下限值(S42)。 本发明可应用于具有大量像素的CMOS图像传感器等。