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    • 6. 发明授权
    • Solid-state image pickup device and signal processing method therefor
    • 固态摄像装置及其信号处理方法
    • US09041827B2
    • 2015-05-26
    • US11655201
    • 2007-01-19
    • Hiroki SatoKeiji MabuchiNobuo NakamuraTetsuya Iizuka
    • Hiroki SatoKeiji MabuchiNobuo NakamuraTetsuya Iizuka
    • H04N5/228H04N5/335H04N3/14
    • H04N5/335
    • The invention makes it possible to perform effective A/D conversion on pixel signals read from a pixel array part, to achieve a reduction in power consumption and reductions in the size and the price of an image pickup device as well as simplification of the construction of the device, and to realize a high-quality image output. The device includes an pixel array part having a plurality of unit pixels, a CDS (correlated double sampling) circuit, and an A/D converter. A pixel signal read from a pixel array part via a signal line is subjected to CDS processing (noise elimination processing) in the CDS circuit, and then this pixel signal is inputted into the A/D converter which performs A/D conversion on the pixel signal. The A/D converter includes a ΔΣ modulator and a digital filter to perform highly accurate A/D conversion. The invention can also be applied to a construction in which an A/D converter is provided at the front stage of the CDS circuit.
    • 本发明使得可以对从像素阵列部分读取的像素信号进行有效的A / D转换,以实现图像拾取装置的功耗的降低和尺寸和价格的降低以及简化的 该设备,并实现高质量的图像输出。 该装置包括具有多个单位像素的像素阵列部分,CDS(相关双采样)电路和A / D转换器。 经由信号线从像素阵列部分读取的像素信号在CDS电路中进行CDS处理(噪声消除处理),然后将该像素信号输入到对像素进行A / D转换的A / D转换器 信号。 A / D转换器包括&Dgr& 调制器和数字滤波器,以执行高精度的A / D转换。 本发明也可以应用于在CDS电路的前级设置A / D转换器的结构。