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公开(公告)号：US20100283651A1
公开(公告)日：2010-11-11
申请号：US12436620
申请日：2009-05-06
IPC分类号： H03M1/66
CPC分类号： H03M1/667 , H03M1/0682
摘要： Some embodiments include apparatus and methods having an amplifier, a capacitor network coupled to the amplifier, and switching circuitry coupled to the amplifier and the capacitor network. The switching circuit is configured to successively apply a selected reference voltage selected from among a first reference voltage, a second reference voltage, and a third reference voltage to the capacitor network in response to a digital input code to generate an output voltage. Additional embodiments are disclosed.
摘要翻译： 一些实施例包括具有放大器，耦合到放大器的电容器网络和耦合到放大器和电容器网络的开关电路的装置和方法。 开关电路被配置为响应于数字输入码将选择的从第一参考电压，第二参考电压和第三参考电压中选择的参考电压连续地施加到电容器网络以产生输出电压。 公开了另外的实施例。
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2.发明授权Active-pixel image sensing device with linear mode voltage to current conversion 有权有源像素图像感测器件，具有线性模式电压到电流转换公开(公告)号：US06704050B1
公开(公告)日：2004-03-09
申请号：US09298158
申请日：1999-04-23
IPC分类号： H04N5335
摘要： An image sensing device comprising active pixels is disclosed, each pixel having a charge accumulation region for collecting charges generated by a photosensitive element such as a photodiode. A linear voltage to current converter, current mirrors, and a differential amplifier generate an output signal and minimize fixed pattern noise and improve the signal to noise ratio. Image quality is improved by reducing pixel blooming and image smearing through an improved method for resetting the pixels with a bias voltage reference which is less than Vdd. Active circuitry and physical device layout reduce the effects of IR voltage drops along the bus lines in a massive pixel array.
摘要翻译： 公开了包括有源像素的图像感测装置，每个像素具有用于收集由诸如光电二极管的光敏元件产生的电荷的电荷累积区域。 线性电压到电流转换器，电流镜和差分放大器产生输出信号并最小化固定模式噪声并提高信噪比。 通过使用小于Vdd的偏置电压基准来复位像素的改进方法，通过减少像素开花和图像污染来改善图像质量。 有源电路和物理器件布局减少了沿着总线线路的大量像素阵列的IR电压降的影响。
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