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    Wide dynamic range optical sensor
    1.
    发明授权
    Wide dynamic range optical sensor 失效
    宽动态范围光学传感器

    公开(公告)号：US6008486A

    公开(公告)日：1999-12-28

    申请号：US2400

    申请日：1997-12-31

    申请人： Joseph S. Stam ,  Jon H. Bechtel ,  Eric R. Fossum ,  Sabrina E. Kemeny

    发明人： Joseph S. Stam ,  Jon H. Bechtel ,  Eric R. Fossum ,  Sabrina E. Kemeny

    IPC分类号： H04N5/355 ,  H04N5/3745 ,  H04N5/335

    CPC分类号： H04N5/355 ,  H04N5/23258 ,  H04N5/35572 ,  H04N5/3745

    摘要： A system and method is described for increasing effective integration time of an optical sensor including holding a first signal within each pixel cell, proportional to light integrated by the pixel cell over the previous frame period, generating a second signal within each pixel cell proportional to light integrated by the pixel cell over the current frame period, and summing the first signal and the second signal from each pixel, thereby producing an output signal representing the light integrated by each pixel over two frame periods. If saturation of pixel cells is possible, a further method of extending dynamic range is described including generating and storing a first signal in each pixel cell indicative of light integrated by the pixel cell over a long period, generating a second signal in each pixel cell indicative of light integrated by the pixel cell over a short period, and determining an output for each pixel as the first signal whenever the first signal is less than a threshold value, otherwise determining the output as the second signal. Also included are double correlated sampling for noise reduction, interlacing for increased integration time, and individual pixel reset for additional gains in dynamic range.

    摘要翻译： 描述了用于增加光学传感器的有效积分时间的系统和方法，包括在每个像素单元内保持与先前帧周期中由像素单元集成的光成比例的第一信号，在与光成比例的每个像素单元内产生第二信号 由像素单元在当前帧周期内积分，并且从每个像素求和第一信号和第二信号，从而产生表示在两个帧周期内由每个像素集成的光的输出信号。 如果像素单元的饱和​​是可能的，则描述扩展动态范围的另一种方法，其包括在指示由像素单元整合的光的每个像素单元中生成和存储第一信号，并在长周期内存储第一信号，在每个像素单元中生成第二信号 ，并且每当所述第一信号小于阈值时，将每个像素的输出确定为所述第一信号，否则将所述输出确定为所述第二信号。 还包括用于减少噪声的双重相关采样，用于增加积分时间的隔行扫描和用于动态范围附加增益的单独像素复位。

    Vehicle vision system
    2.
    发明授权
    Vehicle vision system 有权
    车辆视觉系统

    公开(公告)号：US07567291B2

    公开(公告)日：2009-07-28

    申请号：US10259253

    申请日：2002-09-27

    申请人： Jon H. Bechtel ,  Joseph S. Stam ,  Eric R. Fossum ,  Sabrina E. Kemeny

    发明人： Jon H. Bechtel ,  Joseph S. Stam ,  Eric R. Fossum ,  Sabrina E. Kemeny

    IPC分类号： H04N5/222 ,  H04N5/225

    CPC分类号： H04N5/2353 ,  G07C5/0891 ,  H04N5/57 ,  H04N9/73

    摘要： A vehicle viewing system including a camera system for generating a signal corresponding to a scene by integrating light from the scene incident on pixel cells having a variable integration time, a display system for presenting a visual representation of the scene, and a processor system operable to determine the camera system integration time based on brightness levels in the scene. The camera system preferably includes and an input attenuating filter to limit light striking the optical array. The processor system includes an image brightness detector to determine overall image brightness and a display control to determine luminance settings for the display system. The processor system may determine the intensity of the display system based on the brightness of the scene, ambient light levels, and glare on the display. The display system includes a display and a display attenuation filter for limiting the intensity as viewed by the operator.

    摘要翻译： 一种车辆观看系统，包括：相机系统，用于通过对入射到具有可变积分时间的像素单元上的场景进行积分来产生对应于场景的信号;用于呈现场景的视觉表示的显示系统;以及可操作以 根据场景中的亮度级别确定摄像机系统集成时间。 相机系统优选地包括输入衰减滤波器以限制撞击光学阵列的光。 处理器系统包括图像亮度检测器以确定整体图像亮度和显示控制以确定显示系统的亮度设置。 处理器系统可以基于场景的亮度，环境光水平和显示器上的眩光来确定显示系统的强度。 显示系统包括显示器和显示衰减滤波器，用于限制操作者观察的强度。

    Apparatus including at least one light sensor with an input pin for receiving an integration period signal
    3.
    发明授权
    Apparatus including at least one light sensor with an input pin for receiving an integration period signal 有权
    装置包括至少一个具有用于接收积分周期信号的输入引脚的光传感器

    公开(公告)号：US07550703B2

    公开(公告)日：2009-06-23

    申请号：US11074066

    申请日：2005-03-07

    申请人： Jon H. Bechtel ,  Joseph S. Stam ,  Robert R. Turnbull ,  Robert H. Nixon ,  Eric R. Fossum

    发明人： Jon H. Bechtel ,  Joseph S. Stam ,  Robert R. Turnbull ,  Robert H. Nixon ,  Eric R. Fossum

    IPC分类号： H01L27/00 ,  G01J1/44 ,  G02B27/00

    CPC分类号： G01J1/4204 ,  B60R1/088 ,  G01J1/46

    摘要： An automatically dimming mirror includes a dimming element having variable reflectivity, the degree of reflectivity based on a control signal. An ambient light sensor is positioned to receive light from a region generally in front of the vehicle. The ambient light sensor outputs a discrete ambient light signal based on the amount of light incident on the ambient light sensor over an integration period. A glare sensor is positioned to view the scene generally behind the vehicle operator. The glare sensor outputs a discrete glare signal based on the amount of light incident on the glare sensor over an integration period. A dimming logic determines an ambient light level based on the ambient light signal. The glare integration period is determined based on the ambient light level. The glare signal resulting from the glare integration period determines a mirror glare level used to set the dimming element control signal.

    摘要翻译： 自动调光镜包括具有可变反射率的调光元件，基于控制信号的反射率。 环境光传感器被定位成从通常在车辆前方的区域接收光。 环境光传感器基于在整个周期内入射到环境光传感器上的光量输出离散的环境光信号。 眩光传感器被定位成通常在车辆操作者后面观看场景。 眩光传感器基于入射到眩光传感器上的光的积分周期，输出离散的眩光信号。 调光逻辑基于环境光信号确定环境光水平。 眩光积分时间是根据环境光照度决定的。 由眩光积分时段产生的眩光信号决定了用于设置调光元件控制信号的镜面眩光水平。

    Automatic dimming mirror using semiconductor light sensor with integral charge collection
    8.
    发明授权
    Automatic dimming mirror using semiconductor light sensor with integral charge collection 有权
    自动调光镜采用半导体光电传感器，集成电荷收集

    公开(公告)号：US06402328B1

    公开(公告)日：2002-06-11

    申请号：US09307941

    申请日：1999-05-07

    申请人： Jon H. Bechtel ,  Joseph S. Stam ,  Robert R. Turnbull ,  Robert H. Nixon ,  Eric R. Fossum

    发明人： Jon H. Bechtel ,  Joseph S. Stam ,  Robert R. Turnbull ,  Robert H. Nixon ,  Eric R. Fossum

    IPC分类号： G02B508

    CPC分类号： G01J1/4204 ,  B60R1/088 ,  G01J1/46

    摘要： Automatically dimming rearview mirrors allow a vehicle operator to view a scene generally behind the operator at a reflectivity level automatically adjusted to ambient light and glare levels. An automatically dimming mirror includes a dimming element having a variably reflective surface, the degree of reflectivity based on a control signal. An ambient light sensor is positioned to receive light from a region generally in front of the vehicle. The ambient light sensor outputs a discrete ambient light signal based on the amount of light incident on the ambient light sensor over an integration period. A glare sensor is positioned to view the scene generally behind the vehicle operator. The glare sensor outputs a discrete glare signal based on the amount of light incident on the glare sensor over an integration period. A dimming logic determines an ambient light level based on the ambient light signal. The glare integration period is determined based on the ambient light level. The glare signal resulting from the glare integration period determines a mirror glare level used to set the dimming element control signal. The use of variable integration times increases the dynamic range of the light sensors, improving the mirror dimming response.

    摘要翻译： 自动调光后视镜允许车辆操作员在自动调节到环境光和眩光水平的反射率水平下一般观察操作者后面的场景。 自动调光镜包括具有可变反射表面的调光元件，基于控制信号的反射度。 环境光传感器被定位成从通常在车辆前方的区域接收光。 环境光传感器基于在整个周期内入射到环境光传感器上的光量输出离散的环境光信号。 眩光传感器被定位成通常在车辆操作者后面观看场景。 眩光传感器基于入射到眩光传感器上的光的积分周期，输出离散的眩光信号。 调光逻辑基于环境光信号确定环境光水平。 眩光积分时间是根据环境光照度决定的。 由眩光积分时段产生的眩光信号决定了用于设置调光元件控制信号的镜面眩光水平。 使用可变积分时间增加了光传感器的动态范围，提高了镜面调光响应。

    Automatic dimming mirror using semiconductor light sensor with integral charge collection
    9.
    发明授权
    Automatic dimming mirror using semiconductor light sensor with integral charge collection 有权
    自动调光镜采用半导体光电传感器，集成电荷收集

    公开(公告)号：US06755542B2

    公开(公告)日：2004-06-29

    申请号：US10166071

    申请日：2002-06-10

    申请人： Jon H. Bechtel ,  Joseph S. Stam ,  Robert R. Turnbull ,  Robert H. Nixon ,  Eric R. Fossum

    发明人： Jon H. Bechtel ,  Joseph S. Stam ,  Robert R. Turnbull ,  Robert H. Nixon ,  Eric R. Fossum

    IPC分类号： G02B508

    CPC分类号： G01J1/4204 ,  B60R1/088 ,  G01J1/46

    摘要： An automatically dimming mirror includes a dimming element having variable reflectivity, the degree of reflectivity based on a control signal. An ambient light sensor is positioned to receive light from a region generally in front of the vehicle. The ambient light sensor outputs a discrete ambient light signal based on the amount of light incident on the ambient light sensor over an integration period. A glare sensor is positioned to view the scene generally behind the vehicle operator. The glare sensor outputs a discrete glare signal based on the amount of light incident on the glare sensor over an integration period. A dimming logic determines an ambient light level based on the ambient light signal. The glare integration period is determined based on the ambient light level. The glare signal resulting from the glare integration period determines a mirror glare level used to set the dimming element control signal.

    摘要翻译： 自动调光镜包括具有可变反射率的调光元件，基于控制信号的反射率。 环境光传感器被定位成从通常在车辆前方的区域接收光。 环境光传感器基于在整个周期内入射到环境光传感器上的光量输出离散的环境光信号。 眩光传感器被定位成通常在车辆操作者后面观看场景。 眩光传感器基于入射到眩光传感器上的光的积分周期，输出离散的眩光信号。 调光逻辑基于环境光信号确定环境光水平。 眩光积分时间是根据环境光照度决定的。 由眩光积分时段产生的眩光信号决定了用于设置调光元件控制信号的镜面眩光水平。