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78 条记录 (耗时 0.026 秒)

    High-speed sampling of signals in active pixel sensors
    4.
    发明申请
    High-speed sampling of signals in active pixel sensors 有权

    公开(公告)号：US20060244855A1

    公开(公告)日：2006-11-02

    申请号：US11473130

    申请日：2006-06-23

    申请人： Nikolai Bock ,  Alexander Krymski ,  Barmak Mansoorian

    发明人： Nikolai Bock ,  Alexander Krymski ,  Barmak Mansoorian

    IPC分类号： H04N5/335 ,  H04N3/14

    CPC分类号： H04N5/378

    摘要： Techniques are disclosed for enhancing the speed at which pixel levels are read out and sampled for processing. A method of processing pixel levels includes clamping a pixel readout line to a voltage level less than a voltage corresponding to a signal sensed by an n-MOS pixel. Subsequently, the pixel readout line is coupled to an output of an n-MOS source-follower and the pixel signal is read out onto the pixel readout line through the n-MOS source-follower. The pixel signal that was read out is passed through a p-MOS source-follower to a processing circuit. Before passing the pixel signal through the p-MOS source-follower to the processing circuit, a capacitive storage node in the processing circuit is clamped to a voltage greater than a signal at an input to the p-MOS source-follower. Subsequently, an output of the p-MOS source-follower is coupled to the processing circuit, and a signal corresponding to the pixel signal is stored by the processing circuit. Similar techniques are provided for reading out and sampling p-MOS pixels.

    Bidirectional follower for driving a capacitive load
    5.
    发明授权
    Bidirectional follower for driving a capacitive load 失效
    用于驱动电容性负载的双向跟随器

    公开(公告)号：US6043690A

    公开(公告)日：2000-03-28

    申请号：US38635

    申请日：1998-03-10

    申请人： Alexander Krymski ,  Sandor Barna ,  Barmak Mansoorian

    发明人： Alexander Krymski ,  Sandor Barna ,  Barmak Mansoorian

    IPC分类号： H03K17/687 ,  H03K3/00

    CPC分类号： H03K17/6872

    摘要： A bidirectional source follower system includes an N channel transistor and P channel transistor which conduct in opposite ways. The n channel transistor is connected to quickly source current, however is relatively inefficient at sinking current. In contrast, the P channel transistor can sink current very quickly but is bad at source current. The two devices are connected together in a way which allows advantageous features of both.

    摘要翻译： 双向源极跟随器系统包括以相反方式导通的N沟道晶体管和P沟道晶体管。 n沟道晶体管连接到快速电源电流，然而在沉降电流方面效率相对较低。 相比之下，P沟道晶体管可以非常快地吸收电流，但在源极电流下不好。 两个装置以允许两者的有利特征的方式连接在一起。

    Readout circuit with gain and analog-to-digital conversion for image sensor
    6.
    发明申请
    Readout circuit with gain and analog-to-digital conversion for image sensor 有权
    读数电路具有图像传感器的增益和模数转换功能

    公开(公告)号：US20050195645A1

    公开(公告)日：2005-09-08

    申请号：US11058426

    申请日：2005-02-16

    申请人： Roger Panicacci ,  Barmak Mansoorian ,  Sandor Barna ,  Alexander Krymski

    发明人： Roger Panicacci ,  Barmak Mansoorian ,  Sandor Barna ,  Alexander Krymski

    IPC分类号： G11C11/00 ,  H01L27/00 ,  H03M1/12 ,  H04N5/228 ,  H04N5/365 ,  H04N5/374 ,  H04N5/378

    CPC分类号： H04N5/378 ,  H04N5/3575 ,  H04N5/363

    摘要： A CMOS imager includes an array of active pixel sensors, wherein each pixel is associated with a respective column in the array. The imager also includes multiple circuits for reading out values of pixels from the active sensor array. Each readout circuit can be associated with a respective pair of columns in the array and can include first and second sample-and-hold circuits. The first and second sample-and-hold circuits are associated, respectively, with first and second columns of pixels in the array. Each readout circuit also includes an operational amplifier-based charge sensing circuit that selectively provides an amplified differential output signal based on signals sampled either by the first sample-and-hold circuit or the second sample-and-hold circuit. The readout circuit also has an analog-to-digital converter for converting the differential output to a corresponding digital signal using a successive approximation technique. Use of the readout circuit can increase the parallel structure of the overall chip, thereby reducing the bandwidth which each readout circuit must be capable of handling.

    摘要翻译： CMOS成像器包括有源像素传感器阵列，其中每个像素与阵列中相应的列相关联。 成像器还包括用于从有源传感器阵列读出像素值的多个电路。 每个读出电路可以与阵列中的相应列相关联，并且可以包括第一和第二采样和保持电路。 第一和第二采样保持电路分别与阵列中的第一和第二列像素相关联。 每个读出电路还包括基于运算放大器的电荷感测电路，其基于由第一采样保持电路或第二采样保持电路采样的信号选择性地提供放大的差分输出信号。 读出电路还具有模数转换器，用于使用逐次逼近技术将差分输出转换成对应的数字信号。 使用读出电路可以增加整个芯片的并行结构，从而减少每个读出电路必须能够处理的带宽。

    Active pixel sensor with current mode readout
    7.
    发明授权
    Active pixel sensor with current mode readout 有权
    有源像素传感器，具有电流模式读数

    公开(公告)号：US06194696B1

    公开(公告)日：2001-02-27

    申请号：US09265936

    申请日：1999-03-10

    申请人： Eric R. Fossum ,  Alexander Krymski ,  Barmak Mansoorian

    发明人： Eric R. Fossum ,  Alexander Krymski ,  Barmak Mansoorian

    IPC分类号： H01L2700

    CPC分类号： H04N5/378 ,  H04N5/3575

    摘要： A current mode device for an active pixel sensor includes a voltage to current converter which includes an operation that occurs inside a source follower. The device operates to draw no current while the current is incoming. The device uses two stages of double sampling—one before the current-mode op amp and one after.

    摘要翻译： 用于有源像素传感器的电流模式器件包括电压 - 电流转换器，其包括在源极跟随器内发生的操作。 当电流进入时，该装置工作时无需画出电流。 该器件使用两个阶段的双采样 - 一个在电流模式运放和一个之后。

    Calibration of A/D converters by reusing capacitors used for sampling
    8.
    发明授权
    Calibration of A/D converters by reusing capacitors used for sampling 有权
    通过重新使用用于采样的电容来校准A / D转换器

    公开(公告)号：US06778123B1

    公开(公告)日：2004-08-17

    申请号：US09746565

    申请日：2000-12-21

    申请人： Nikolai Bock ,  Alexander Krymski

    发明人： Nikolai Bock ,  Alexander Krymski

    IPC分类号： H03M112

    CPC分类号： H03M1/1019 ,  H03M1/466

    摘要： An A/D converter element of the successive approximation type uses its capacitors both for conversion and for calibration. A calibration face is carried out in which calibration values are obtained. These values are stored and then later used for adjustment of the values obtained from the capacitors.

    摘要翻译： 逐次逼近型的A / D转换器元件使用其电容器进行转换和校准。 执行校准面，其中获得校准值。 这些值被存储，然后用于调整从电容器获得的值。

    Image sensors, methods, and high dynamic range pixels with variable capacitance
    10.
    发明授权
    Image sensors, methods, and high dynamic range pixels with variable capacitance 有权

    公开(公告)号：US11011560B2

    公开(公告)日：2021-05-18

    申请号：US15854527

    申请日：2017-12-26

    申请人： Alexander Krymski

    发明人： Alexander Krymski

    IPC分类号： H01L27/146

    摘要： A pixel includes a photodiode and a readout node for receiving charge transferred from the photodiode. The readout node is configured to have a variable capacitance that is non-linear with respect to a voltage at the readout node. The readout node is resettable. The readout node may be configured to have a lower capacitance when reset to a reset voltage than when getting filled with charge from the photodiode. The readout node may be configured such that the capacitance of the readout node continuously increases as additional charge is received by the readout node after the readout node is reset. The readout node may be configured such that the capacitance of the readout node jumps from a first capacitance to a second capacitance after the readout node has been filled with a certain amount of charge. An image sensor includes a pixel array with a plurality of the pixels.