Methods, systems, and devices for offset compensation in CMOC imagers
    1.
    发明授权
    Methods, systems, and devices for offset compensation in CMOC imagers 有权
    用于CMOS成像器偏移补偿的方法,系统和设备

    公开(公告)号:US07872676B2

    公开(公告)日:2011-01-18

    申请号:US11777442

    申请日:2007-07-13

    摘要: Methods, devices, and systems for offset compensation in an amplifier are disclosed, wherein the amplifier inputs may be exposed to large loads from an array of pixel columns coupled in parallel. During a sampling phase, an amplifier offset may be sampled by selectively coupling a first amplifier output to a first amplifier input and a second amplifier output to a second amplifier input. During a portion of the sampling phase, the first amplifier output may be buffered to a first storage element. During a different portion of the sampling phase, the second amplifier output may be buffered to a second storage element. To sense the pixel columns during an amplification phase, the first storage element and the second storage element are coupled to the first and second amplifier inputs, respectively, with the result that the amplifier offset is canceled from the amplifier output.

    摘要翻译: 公开了放大器中用于偏移补偿的方法,装置和系统,其中放大器输入可以从并联耦合的像素列阵列暴露于大负载。 在采样阶段期间,可以通过选择性地将第一放大器输出耦合到第一放大器输入和第二放大器输出到第二放大器输入来对放大器偏移进行采样。 在采样阶段的一部分期间,第一放大器输出可以被缓冲到第一存储元件。 在采样相位的不同部分期间,第二放大器输出可以被缓冲到第二存储元件。 为了在放大阶段期间感测像素列,第一存储元件和第二存储元件分别耦合到第一和第二放大器输入,结果是从放大器输出消除放大器偏移。

    METHODS, SYSTEMS, AND DEVICES FOR OFFSET COMPENSATION IN CMOS IMAGERS
    2.
    发明申请
    METHODS, SYSTEMS, AND DEVICES FOR OFFSET COMPENSATION IN CMOS IMAGERS 有权
    CMOS图像中偏移补偿的方法,系统和设备

    公开(公告)号:US20090015692A1

    公开(公告)日:2009-01-15

    申请号:US11777442

    申请日:2007-07-13

    IPC分类号: H04N5/335 H01L27/14

    摘要: Methods, devices, and systems for offset compensation in an amplifier are disclosed, wherein the amplifier inputs may be exposed to large loads from an array of pixel columns coupled in parallel. During a sampling phase, an amplifier offset may be sampled by selectively coupling a first amplifier output to a first amplifier input and a second amplifier output to a second amplifier input. During a portion of the sampling phase, the first amplifier output may be buffered to a first storage element. During a different portion of the sampling phase, the second amplifier output may be buffered to a second storage element. To sense the pixel columns during an amplification phase, the first storage element and the second storage element are coupled to the first and second amplifier inputs, respectively, with the result that the amplifier offset is canceled from the amplifier output.

    摘要翻译: 公开了放大器中用于偏移补偿的方法,装置和系统,其中放大器输入可以从并联耦合的像素列阵列暴露于大负载。 在采样阶段期间,可以通过选择性地将第一放大器输出耦合到第一放大器输入和第二放大器输出到第二放大器输入来对放大器偏移进行采样。 在采样阶段的一部分期间,第一放大器输出可以被缓冲到第一存储元件。 在采样相位的不同部分期间,第二放大器输出可以被缓冲到第二存储元件。 为了在放大阶段期间感测像素列,第一存储元件和第二存储元件分别耦合到第一和第二放大器输入,结果是从放大器输出消除放大器偏移。