Image sensor and camera system having the same
    1.
    发明授权
    Image sensor and camera system having the same 有权
    图像传感器和相机系统

    公开(公告)号:US08773544B2

    公开(公告)日:2014-07-08

    申请号:US13311669

    申请日:2011-12-06

    IPC分类号: H04N5/225 H04N3/14 H03M1/56

    摘要: An image sensor includes a reference voltage generation unit that generates a reference voltage that alternately decreases and increases at a constant rate in an operation mode of the image sensor to convert analog signals of detected incident light to a digital value using the reference voltage to determine an intensity of the incident light with high sensitivity and high signal-to-noise ratio.

    摘要翻译: 图像传感器包括参考电压产生单元,其在图像传感器的操作模式中产生交替地以恒定速率递减的参考电压,以使用参考电压将检测到的入射光的模拟信号转换为数字值,以确定 入射光强度高,灵敏度高,信噪比高。

    IMAGE SENSOR AND CAMERA SYSTEM HAVING THE SAME
    2.
    发明申请
    IMAGE SENSOR AND CAMERA SYSTEM HAVING THE SAME 有权
    图像传感器和具有相同功能的摄像机系统

    公开(公告)号:US20120140089A1

    公开(公告)日:2012-06-07

    申请号:US13311669

    申请日:2011-12-06

    IPC分类号: H04N5/225 H04N5/76 H04N5/228

    摘要: An image sensor includes a reference voltage generation unit that generates a reference voltage that alternately decreases and increases at a constant rate in an operation mode of the image sensor to convert analog signals of detected incident light to a digital value using the reference voltage to determine an intensity of the incident light with high sensitivity and high signal-to-noise ratio.

    摘要翻译: 图像传感器包括参考电压产生单元,其在图像传感器的操作模式中产生交替地以恒定速率递减的参考电压,以使用参考电压将检测到的入射光的模拟信号转换为数字值,以确定 入射光强度高,灵敏度高,信噪比高。

    Image sensors and image processing systems
    3.
    发明授权
    Image sensors and image processing systems 有权
    图像传感器和图像处理系统

    公开(公告)号:US08593319B2

    公开(公告)日:2013-11-26

    申请号:US13611451

    申请日:2012-09-12

    IPC分类号: H03M3/00

    摘要: An image sensor includes a delta-sigma analog-to-digital converter (ADC) including a delta-sigma modulator (DSM) and a voltage adjusting circuit. The DSM is configured to perform delta-sigma modulation on an analog signal from a unit pixel. The delta-sigma ADC is configured to convert the analog signal to a digital signal. The voltage adjusting circuit includes a replica inverter having a same configuration as at least one inverter included in the DSM. The voltage adjusting circuit is configured to adjust a power supply voltage and an input voltage provided to the at least one inverter based on a current flowing in the replica inverter.

    摘要翻译: 图像传感器包括包括Δ-Σ调制器(DSM)和电压调节电路的Δ-Σ模数转换器(ADC)。 DSM被配置为对来自单位像素的模拟信号执行Δ-Σ调制。 Δ-ΣADC配置为将模拟信号转换为数字信号。 电压调整电路包括具有与DSM中包括的至少一个反相器相同配置的复制反相器。 电压调整电路被配置为基于在复制逆变器中流动的电流来调整提供给至少一个逆变器的电源电压和输入电压。

    Image sensor using auto-calibrated ramp signal for improved image quality and driving method thereof
    4.
    发明授权
    Image sensor using auto-calibrated ramp signal for improved image quality and driving method thereof 有权
    图像传感器使用自动校准斜坡信号,以提高图像质量及其驱动方法

    公开(公告)号:US07679542B2

    公开(公告)日:2010-03-16

    申请号:US11508653

    申请日:2006-08-23

    IPC分类号: H03M1/56

    摘要: An image sensor comprises an active pixel sensor (APS) array, a first analog-to-digital converter (ADC) and a ramp signal generator. The APS array includes a plurality of pixels arranged in a two-dimensional matrix, wherein the APS array generates a reset signal and an image signal for each selected column of the APS array. The first ADC includes a correlated double sampling (CDS) circuit array comprising CDS circuits that are arranged for each column of the APS array, wherein the first ADC generates a digital code from a signal corresponding to the difference between the reset signal and the image signal which are generated by the CDS circuit using a ramp signal. The ramp signal generator generates the ramp signal, wherein a second ADC receives a feedback of the generated ramp signal and generates a feedback reference code, and wherein the ramp signal generator calibrates the ramp signal based on a comparison using the feedback reference code.

    摘要翻译: 图像传感器包括有源像素传感器(APS)阵列,第一模数转换器(ADC)和斜坡信号发生器。 APS阵列包括以二维矩阵排列的多个像素,其中APS阵列为APS阵列的每个选定的列产生复位信号和图像信号。 第一ADC包括相关双采样(CDS)电路阵列,其包括为APS阵列的每列排列的CDS电路,其中第一ADC从与复位信号和图像信号之间的差对应的信号产生数字码 其由CDS电路使用斜坡信号产生。 斜坡信号发生器产生斜坡信号,其中第二ADC接收产生的斜坡信号的反馈并产生反馈参考码,并且其中斜坡信号发生器基于使用反馈参考码的比较来校准斜坡信号。

    Method and apparatus for canceling fixed pattern noise in CMOS image sensor
    5.
    发明申请
    Method and apparatus for canceling fixed pattern noise in CMOS image sensor 失效
    CMOS图像传感器中消除固定图案噪声的方法和装置

    公开(公告)号:US20090046177A1

    公开(公告)日:2009-02-19

    申请号:US12073625

    申请日:2008-03-07

    IPC分类号: H04N5/217 H04N5/335

    摘要: An apparatus for canceling a fixed pattern noise in a CMOS image sensor includes a storage device, a fixed pattern noise operation circuit, and a fixed pattern noise canceling circuit. The storage device stores first reference fixed pattern noises operated in a vertical blank section of an (n−1)th frame. The fixed pattern noise operation circuit calculates second reference fixed pattern noises based on the first reference fixed pattern noises stored in the storage device and blank fixed pattern noises output in a vertical blank section of an n-th frame and outputs the second reference fixed pattern noises to the storage device to update the first reference fixed pattern noises to the second reference fixed pattern noises. The fixed pattern noise canceling circuit cancels active fixed pattern noises in combination signals based on the combination signals output in an active section of an (n+1)th frame and including the active fixed pattern noises and pixel signals and the second reference fixed pattern noises output from the storage device.

    摘要翻译: 一种用于消除CMOS图像传感器中的固定图案噪声的装置,包括存储装置,固定图案噪声运算电路和固定图案噪声消除电路。 存储装置存储在第(n-1)帧的垂直空白部分中操作的第一参考固定模式噪声。 固定模式噪声运算电路基于存储在存储装置中的第一参考固定模式噪声和在第n帧的垂直空白部分中输出的空白固定模式噪声来计算第二参考固定模式噪声,并输出第二参考固定模式噪声 到存储装置,以将第一参考固定模式噪声更新为第二参考固定模式噪声。 固定图案噪声消除电路基于在第(n + 1)帧的有效部分中输出的组合信号消除组合信号中的有源固定模式噪声,并且包括有源固定模式噪声和像素信号以及第二参考固定模式噪声 从存储设备输出。

    Image sensor using auto-calibrated ramp signal for improved image quality and driving method thereof
    6.
    发明申请
    Image sensor using auto-calibrated ramp signal for improved image quality and driving method thereof 有权
    图像传感器使用自动校准斜坡信号,以提高图像质量及其驱动方法

    公开(公告)号:US20070046802A1

    公开(公告)日:2007-03-01

    申请号:US11508653

    申请日:2006-08-23

    IPC分类号: H04N5/335

    摘要: An image sensor comprises an active pixel sensor (APS) array, a first analog-to-digital converter (ADC) and a ramp signal generator. The APS array includes a plurality of pixels arranged in a two-dimensional matrix, wherein the APS array generates a reset signal and an image signal for each selected column of the APS array. The first ADC includes a correlated double sampling (CDS) circuit array comprising CDS circuits that are arranged for each column of the APS array, wherein the first ADC generates a digital code from a signal corresponding to the difference between the reset signal and the image signal which are generated by the CDS circuit using a ramp signal. The ramp signal generator generates the ramp signal, wherein a second ADC receives a feedback of the generated ramp signal and generates a feedback reference code, and wherein the ramp signal generator calibrates the ramp signal based on a comparison using the feedback reference code.

    摘要翻译: 图像传感器包括有源像素传感器(APS)阵列,第一模数转换器(ADC)和斜坡信号发生器。 APS阵列包括以二维矩阵排列的多个像素,其中APS阵列为APS阵列的每个选定的列产生复位信号和图像信号。 第一ADC包括相关双采样(CDS)电路阵列,其包括为APS阵列的每列排列的CDS电路,其中第一ADC从与复位信号和图像信号之间的差对应的信号产生数字码 其由CDS电路使用斜坡信号产生。 斜坡信号发生器产生斜坡信号,其中第二ADC接收产生的斜坡信号的反馈并产生反馈参考码,并且其中斜坡信号发生器基于使用反馈参考码的比较来校准斜坡信号。

    Ratio-independent switched capacitor amplifiers and methods of operating ratio-independent switched capacitor amplifiers
    7.
    发明申请
    Ratio-independent switched capacitor amplifiers and methods of operating ratio-independent switched capacitor amplifiers 有权
    与比率无关的开关电容放大器和工作比率无关的开关电容放大器的方法

    公开(公告)号:US20080094140A1

    公开(公告)日:2008-04-24

    申请号:US11975018

    申请日:2007-10-17

    IPC分类号: H03F3/189

    摘要: A ratio-independent switched capacitor amplifier includes a first sampling circuit configured to sample a first input voltage as a first sampling voltage and to double a level of the first sampling voltage during an interval in which the first input voltage is cut off; a second sampling circuit configured to sample a second input voltage as a second sampling voltage and to double a level of the second sampling voltage during an interval in which the second input voltage is cut off; and a differential amplifier circuit configured to output a difference between the first sampling voltage and the second sampling voltage.

    摘要翻译: 比率无关的开关电容放大器包括:第一采样电路,被配置为将第一输入电压作为第一采样电压进行采样,并在第一输入电压被切断的间隔期间使第一采样电压的电平加倍; 第二采样电路,被配置为将第二输入电压作为第二采样电压进行采样,并且在所述第二输入电压被切断的间隔期间将所述第二采样电压的电平加倍; 以及差分放大电路,被配置为输出第一采样电压和第二采样电压之间的差。

    Digital double sampling method, a related CMOS image sensor, and a digital camera comprising the CMOS image sensor
    8.
    发明授权
    Digital double sampling method, a related CMOS image sensor, and a digital camera comprising the CMOS image sensor 有权
    数字双采样方法,相关的CMOS图像传感器和包括CMOS图像传感器的数字照相机

    公开(公告)号:US09204071B2

    公开(公告)日:2015-12-01

    申请号:US13183533

    申请日:2011-07-15

    IPC分类号: H04N5/357 H04N5/378

    摘要: A digital double sampling method, a related complementary metal oxide semiconductor (CMOS) image sensor, and a digital camera comprising the CMOS image sensor are disclosed. The method includes generating first digital data corresponding to an initial voltage level apparent in a pixel in response to a reset signal, inverting the first digital data, outputting a detection voltage corresponding to image data received from outside of the CMOS image sensor, and counting in synchronization with a clock signal, starting from an initial value equal to the inverted first digital data, and for an amount of time responsive to a voltage level of the detection voltage.

    摘要翻译: 公开了一种数字双采样方法,相关的互补金属氧化物半导体(CMOS)图像传感器和包括CMOS图像传感器的数字照相机。 该方法包括响应于复位信号产生对应于像素中明显的初始电压电平的第一数字数据,反转第一数字数据,输出对应于从CMOS图像传感器外部接收的图像数据的检测电压,并计数 与等于反相的第一数字数据的初始值开始的时钟信号的同步,以及响应于检测电压的电压电平的时间量。

    Image capture device and method of operating the same
    9.
    发明授权
    Image capture device and method of operating the same 有权
    图像捕获装置及其操作方法

    公开(公告)号:US08059175B2

    公开(公告)日:2011-11-15

    申请号:US11979886

    申请日:2007-11-09

    CPC分类号: H04N5/235 H04N5/2355

    摘要: A method for operating an image capture device having a sensor with an array of first and second pixels includes capturing an image a plurality of times with the second pixels to produce a corresponding second image signal, the second pixels being white pixels, capturing the image a single time with the first pixels to produce a corresponding first image signal, inputting selecting signals to the sensor via a row driver to obtain the first and second image signals from the first and second pixels, respectively, and converting the first and second image signals to respective digital values via an analog-to-digital converter.

    摘要翻译: 一种用于操作具有具有第一和第二像素的阵列的传感器的图像捕获装置的方法包括用第二像素捕获多次图像以产生对应的第二图像信号,第二像素为白色像素,捕获图像 与第一像素单时间产生对应的第一图像信号,经由行驱动器将选择信号输入到传感器,以分别从第一和第二像素获得第一和第二图像信号,并将第一和第二图像信号转换为 各自的数字值通过模数转换器。

    Digital double sampling method, a related CMOS image sensor, and a digital camera comprising the CMOS image sensor
    10.
    发明授权
    Digital double sampling method, a related CMOS image sensor, and a digital camera comprising the CMOS image sensor 有权
    数字双采样方法,相关的CMOS图像传感器和包括CMOS图像传感器的数字照相机

    公开(公告)号:US07995123B2

    公开(公告)日:2011-08-09

    申请号:US11877027

    申请日:2007-10-23

    摘要: A digital double sampling method, a related complementary metal oxide semiconductor (CMOS) image sensor, and a digital camera comprising the CMOS image sensor are disclosed. The method includes generating first digital data corresponding to an initial voltage level apparent in a pixel in response to a reset signal, inverting the first digital data, outputting a detection voltage corresponding to image data received from outside of the CMOS image sensor, and counting in synchronization with a clock signal, starting from an initial value equal to the inverted first digital data, and for an amount of time responsive to a voltage level of the detection voltage.

    摘要翻译: 公开了一种数字双采样方法,相关的互补金属氧化物半导体(CMOS)图像传感器和包括CMOS图像传感器的数字照相机。 该方法包括响应于复位信号产生对应于像素中明显的初始电压电平的第一数字数据,反转第一数字数据,输出对应于从CMOS图像传感器外部接收的图像数据的检测电压,并计数 与等于反相的第一数字数据的初始值开始的时钟信号的同步,以及响应于检测电压的电压电平的时间量。