Improvements in active-pixel image sensors
    2.
    发明公开
    Improvements in active-pixel image sensors 有权
    在aktiven Bildsensoren的Verbesserung

    公开(公告)号:EP1351492A1

    公开(公告)日:2003-10-08

    申请号:EP02252472.2

    申请日:2002-04-05

    CPC classification number: H04N5/3653 H04N5/3575

    Abstract: An image sensor has an array of pixels (10) read by column circuits (14) to provide reset and read samples on a pair of sample capacitors (Cs). To alleviate the effects of parasitic capacitance (Cp) in the region of the sample capacitors (Cs), a modified timing arrangement is used. Both sample switches (CDSBLK, CDSSIG) are operated simultaneously to pre-charge both sample capacitors (Cs) with a pixel signal value. One sample switch (CDSBLK) is operated after reset to apply a reset value to one of the pre-charged sample capacitors (Cs).

    Abstract translation: 图像传感器具有由列电路(14)读取的像素阵列(10),以在一对采样电容器(Cs)上提供复位和读取采样。 为了减轻样品电容器(Cs)的区域中的寄生电容(Cp)的影响,使用修改的定时布置。 同时操作两个采样开关(CDSBLK,CDSSIG),以对像素信号值预充电两个采样电容(Cs)。 一个采样开关(CDSBLK)在复位后运行,以将复位值施加到其中一个预充电采样电容器(Cs)。

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