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    • 5. 发明申请
    • CMOS Image Capture Device with Self-Correcting Gain Characteristic
    • 具有自校正增益特性的CMOS图像捕获器件
    • US20060290552A1
    • 2006-12-28
    • US11279141
    • 2006-04-10
    • Jae RohJung-hyun Nam
    • Jae RohJung-hyun Nam
    • H03M1/12
    • H03M1/181H03M1/56H04N5/3651H04N5/378
    • A CMOS image capture device includes an array of pixel elements configured to convert an image received as light at a surface thereof into analog output signals. An image processing circuit is also provided. The image processing circuit is configured to generate digital output signals from which the image can be recreated in response to the analog output signals. The image processing circuit has self-adjustable gain characteristics. The image processing circuit includes a ramp signal generator having an integration circuit therein with an adjustable RC time constant. The integration circuit includes an operational amplifier and a resistor array and/or a capacitor array electrically coupled to the operational amplifier. This resistor array and/or capacitor array enables the adjustable RC time constant.
    • CMOS图像捕获装置包括被配置为将在其表面处接收为光的图像转换为模拟输出信号的像素元件的阵列。 还提供了图像处理电路。 图像处理电路被配置为产生数字输出信号,响应于模拟输出信号,可以从其重新创建图像。 图像处理电路具有自调节增益特性。 图像处理电路包括其中具有可调节RC时间常数的积分电路的斜坡信号发生器。 积分电路包括运算放大器和电耦合到运算放大器的电阻器阵列和/或电容器阵列。 该电阻器阵列和/或电容器阵列使得可调RC时间常数。