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公开(公告)号：KR1020130115684A
公开(公告)日：2013-10-22
申请号：KR1020120038219
申请日：2012-04-13
Applicant: 삼성전자주식회사
IPC: H04N5/378
CPC classification number: H04N5/378 , H04N5/3575
Abstract: PURPOSE: A correlated double sampling (CDS) circuit and an image sensor having the same are provided to efficiently reduce random noise without increasing its size. CONSTITUTION: A sampling unit (120) generates an output signal by performing CDS for a reset component and an image component included in an input signal provided from a pixel array based on a ramp signal. A timing controlled band-limitation (TCBL) unit (140) removes noise of the output signal based on a timing control signal activated respectively in a first comparison section and a second comparison section. First comparison operation for a ramp signal and a reset component of an input signal is performed in the first comparison section. Second comparison operation for the ramp signal and an image component of the input signal is performed in the second comparison section.
Abstract translation: 目的：提供相关双采样（CDS）电路和具有此功能的图像传感器，以有效降低随机噪声而不增加其尺寸。 构成：采样单元（120）通过对基于斜坡信号从像素阵列提供的输入信号中包括的复位分量和图像分量进行CDS生成输出信号。 定时控制带限制（TCBL）单元（140）基于分别在第一比较部分和第二比较部分中激活的定时控制信号来去除输出信号的噪声。 在第一比较部分中执行斜坡信号和输入信号的复位分量的第一比较操作。 在第二比较部分中执行用于斜坡信号和输入信号的图像分量的第二比较操作。
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公开(公告)号：KR1020130096479A
公开(公告)日：2013-08-30
申请号：KR1020120017967
申请日：2012-02-22
Applicant: 삼성전자주식회사
IPC: H04N5/378
CPC classification number: H03K5/1252 , H04N5/378
Abstract: PURPOSE: A correlated double sampling (CDS) circuit, an image sensor including the same, and an image processing device including the image sensor are provided to increase sensitivity and a signal noise ratio by minimizing a loss of a pixel signal. CONSTITUTION: A correction circuit (141) receives a plurality of pixel signals through a first node and corrects the received pixel signals. A first input unit of a comparator (143) is connected to a second node and receives the corrected pixel signals outputs through the second node from the correction circuit. A second input unit of the comparator receives a lamp signal. The comparator outputs a comparison signal corresponding to a comparison result of the corrected pixel signals and the lamp signal. The correction circuit includes a first capacitor connected to the between of the first node and the second node and a metal line adjacent to the first capacitor. One or more capacitors are formed by the first capacitor and the metal line.
Abstract translation: 目的：提供相关双采样（CDS）电路，包括其的图像传感器和包括图像传感器的图像处理装置，以通过最小化像素信号的损失来提高灵敏度和信号噪声比。 构成：校正电路（141）通过第一节点接收多个像素信号，并校正所接收的像素信号。 比较器（143）的第一输入单元连接到第二节点，并从校正电路接收通过第二节点的经校正的像素信号输出。 比较器的第二输入单元接收灯信号。 比较器输出与校正的像素信号和灯信号的比较结果相对应的比较信号。 校正电路包括连接到第一节点和第二节点之间的第一电容器和与第一电容器相邻的金属线。 一个或多个电容器由第一电容器和金属线形成。
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公开(公告)号：KR1020130059995A
公开(公告)日：2013-06-07
申请号：KR1020110126262
申请日：2011-11-29
Applicant: 삼성전자주식회사
CPC classification number: H03F1/34 , G11C27/026 , H03F1/086 , H03F3/45188 , H03F2200/153 , H03F2203/45512 , H03F2203/45514
Abstract: PURPOSE: An operational amplifier circuit, an image sensor including the same, and a method for compensating a frequency response of an operational amplifier are provided to output a high frequency signal by widening a bandwidth and implementing stability by adjusting capacitance according to a feedback gain. CONSTITUTION: An operational amplifier circuit includes a first operational amplifier(10), a second operational amplifier(20), a feedback block(30) and a variable compensation capacitor(Cc). The first operational amplifier differentially amplifies an input signal. A load capacitor and the variable compensation capacitor are connected to an output port of the first operational amplifier. The feedback block adds a feedback gain to the output of the first operational amplifier and then feeds back the result to the input of the first operational amplifier. The capacitance of the variable compensation capacitor varies on the basis of the feedback gain.
Abstract translation: 目的：提供一种运算放大器电路，包括该运算放大器电路的图像传感器和用于补偿运算放大器的频率响应的方法，以通过根据反馈增益调节电容来增加带宽并实现稳定性来输出高频信号。 构成：运算放大器电路包括第一运算放大器（10），第二运算放大器（20），反馈块（30）和可变补偿电容器（Cc）。 第一运算放大器对输入信号进行差分放大。 负载电容器和可变补偿电容器连接到第一运算放大器的输出端口。 反馈块向第一运算放大器的输出添加反馈增益，然后将结果反馈到第一运算放大器的输入。 可变补偿电容的电容根据反馈增益而变化。
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公开(公告)号：KR1020120049547A
公开(公告)日：2012-05-17
申请号：KR1020100110860
申请日：2010-11-09
Applicant: 삼성전자주식회사
Abstract: PURPOSE: An analog to digital converter, an image sensor including the same, and a method of converting analog to digital are provided to prevent the slope mismatch and the offset mismatch between lamp voltages by using one lamp voltage. CONSTITUTION: A reference voltage selection unit(120) outputs a selection reference voltage by selecting one of a plurality of reference voltages based on selection control signals. A multiple input comparison unit(140) generates comparison result signals by comparing a selection reference voltage, a pixel output voltage, a lamp initial voltage, and a lamp voltage. A selection control signal generating unit(160) generates the selection control signal based on the comparison result signals and comparison mode signals. A digital signal generating unit(180) generates digital signals corresponding to the pixel output voltage based on the comparison result signals.
Abstract translation: 目的：提供一种模拟数字转换器，包括其的图像传感器和转换模拟数字的方法，以通过使用一个灯电压来防止斜坡失配和灯电压之间的偏移失配。 构成：参考电压选择单元（120）通过基于选择控制信号选择多个参考电压中的一个来输出选择基准电压。 多输入比较单元（140）通过比较选择基准电压，像素输出电压，灯初始电压和灯电压来生成比较结果信号。 选择控制信号生成单元（160）基于比较结果信号和比较模式信号生成选择控制信号。 数字信号生成单元（180）根据比较结果信号生成与像素输出电压对应的数字信号。
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