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IMAGE SIGNAL PROCESSING DEVICE AND METHOD OF CONTROLLING ELECTRIC CHARGE ACCUMULATION TIME OF LIGHT RECEIVING ELEMENT BY LINEARLY ESTIMATING EXPOSURE TIME
IMAGE SIGNAL PROCESSING DEVICE AND METHOD OF CONTROLLING ELECTRIC CHARGE ACCUMULATION TIME OF LIGHT RECEIVING ELEMENT BY LINEARLY ESTIMATING EXPOSURE TIME
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机译:通过线性估计曝光时间来控制受光元件的电荷累积时间的图像信号处理装置和方法
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摘要
PURPOSE: A device for processing an image signal and a method thereof are provided to accurately maintain the standard brightness through the exposure time control of an active light receiving element. CONSTITUTION: A video brightness accumulation operation unit(210) accumulates a plurality of video signals. The image brightness accumulation operation unit calculates the current brightness value from a plurality of accumulated video signals. Based on the operated present brightness value, a linear brightness prediction unit(220) predicts the exposure time for standard brightness. By using the predicted exposure time, an exposure time control unit(230) controls the charge accumulation time of receiving element.
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