ANALOG-TO-DIGITAL CONVERSION IN IMAGE SENSORS
    91.
    发明申请
    ANALOG-TO-DIGITAL CONVERSION IN IMAGE SENSORS 有权
    图像传感器中的模拟数字转换

    公开(公告)号:US20100157035A1

    公开(公告)日:2010-06-24

    申请号:US12622373

    申请日:2009-11-19

    CPC classification number: H04N5/3355 H04N5/3577

    Abstract: An image sensor has a per-column ADC arrangement including first and second capacitors allowing a comparator circuit to perform correlated double sampling. The capacitors are continuously connected to, respectively, the analog pixel signal and a ramp signal without use of a hold operation. The comparator circuit comprises a differential input being connected to the junction of the two capacitors and being biased by a reference signal. The reference signal is preferably sampled and held from a reference voltage. The use of a differential input as first stage of the comparator addresses problems arising from ground voltage bounce when a large pixel array images a scene with low contrast. Connectivity of the differential input stage allows the ramp signal to see a constant capacitive load thus reduce image artifacts referred to as smear.

    Abstract translation: 图像传感器具有包括允许比较器电路执行相关双重采样的第一和第二电容器的每列ADC布置。 电容器分别连续地连接到模拟像素信号和斜坡信号,而不使用保持操作。 比较器电路包括差分输入端,连接到两个电容器的结,并被参考信号偏置。 参考信号优选地从参考电压采样和保持。 使用差分输入作为比较器的第一级,当大像素阵列以低对比度的场景成像时,可以解决地电压反弹引起的问题。 差分输入级的连接允许斜坡信号看到恒定的电容性负载,从而减少称为污迹的图像伪影。

    CAMERA MODULE LENS CAP
    92.
    发明申请
    CAMERA MODULE LENS CAP 有权
    相机模块镜头盖

    公开(公告)号:US20090057544A1

    公开(公告)日:2009-03-05

    申请号:US11872226

    申请日:2007-10-15

    CPC classification number: G03B11/00 H04N5/2257

    Abstract: A camera module lens cap is provided to protect a camera module in a mobile device where the camera module is exposed. The camera module lens cap includes an optically transparent member for positioning adjacent a camera lens, and a housing for carrying the optically transparent member. The housing includes an overhanging lip for engaging a base of the camera module.

    Abstract translation: 提供相机模块透镜盖,以保护相机模块暴露在的移动设备中的相机模块。 相机模块透镜盖包括用于定位在相机镜头附近的光学透明构件和用于承载光学透明构件的壳体。 壳体包括用于接合摄像机模块的基座的突出唇缘。

    Battery-charger device with improved stability
    93.
    发明申请
    Battery-charger device with improved stability 有权
    电池充电器具有改善的稳定性

    公开(公告)号:US20050040791A1

    公开(公告)日:2005-02-24

    申请号:US10869512

    申请日:2004-06-16

    CPC classification number: H02J7/0072 H02M1/08 H02M2001/0009

    Abstract: A circuit is provided for controlling a battery-charger device with a closed-loop architecture. The circuit includes sensing means for sensing an operative quantity of the device, control means, and driving means. The control means alternately controls the sensing means to track the operative quantity during a tracking phase and to hold the operative quantity during a holding phase. The driving means provides a regulation signal that regulates the operative quantity based on a comparison between the operative quantity sensed by the sensing means and a reference value. The control means causes the driving means to hold the regulation signal during at least part of each of the holding phases. Also provided is a method of controlling a battery-charger device with a closed-loop architecture.

    Abstract translation: 提供一种用于控制具有闭环结构的电池充电器装置的电路。 电路包括感测装置,用于感测装置的操作量,控制装置和驱动装置。 控制装置交替地控制感测装置在跟踪阶段跟踪操作量并在保持阶段保持操作量。 驱动装置提供调节信号,该调节信号基于感测装置感测的操作量与参考值之间的比较来调节操作量。 控制装置使得驱动装置在每个保持阶段的至少一部分期间保持调节信号。 还提供了一种控制具有闭环结构的电池充电器装置的方法。

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