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124 条记录 (耗时 0.041 秒)

    Moisture sensor and windshield fog detector
    43.
    发明授权
    Moisture sensor and windshield fog detector 有权
    水分传感器和挡风玻璃雾探测器

    公开(公告)号：US06262410B1

    公开(公告)日：2001-07-17

    申请号：US09592896

    申请日：2000-06-13

    申请人： Joseph S. Stam ,  Jon H. Bechtel ,  John K. Roberts

    发明人： Joseph S. Stam ,  Jon H. Bechtel ,  John K. Roberts

    IPC分类号： B60S108

    CPC分类号： G06K9/00791 ,  B60S1/0822 ,  B60S1/0833 ,  B60S1/0844 ,  B60S1/0885 ,  B60S1/0888 ,  G06T7/42 ,  G06T2207/20056 ,  G06T2207/30252 ,  H04N5/225 ,  Y10S15/15 ,  Y10S318/02

    摘要： A control system for automatically detecting moisture on the windshield of a vehicle. The automatic moisture detecting system includes an optical system for imaging a portion of the windshield on to an image array sensor, such as a CMOS active pixel sensor. The voltages of each of the pixels which represents the illumination level is converted to a corresponding gray scale value by an analog digital converter. The gray scale values corresponding to the image are stored in memory. The spatial frequency composition of the gray scale values are analyzed to determine the amount of rain present. In order to provide a control signal to control the operation of the windshield wipers of the vehicle as a function of the amount of moisture present. The system is also adapted to detect the level of fog both on the interior of the windshield as well as the exterior of the windshield. By providing a system for automatically detecting the presence of fog on the interior and exterior of the windshield, serious performance limitations of known automatic rain sensors are eliminated.

    摘要翻译： 一种用于自动检测车辆挡风玻璃上的水分的控制系统。 自动水分检测系统包括用于将挡风玻璃的一部分成像到诸如CMOS有源像素传感器的图像阵列传感器上的光学系统。 通过模拟数字转换器将表示照明电平的每个像素的电压转换成相应的灰度值。 与图像对应的灰度值存储在存储器中。 分析灰度值的空间频率组成以确定存在的雨量。 为了提供控制信号以根据存在的水分的量来控制车辆挡风玻璃刮水器的操作。 该系统还适用于在挡风玻璃的内部以及挡风玻璃的外部上检测雾的水平。 通过提供用于自动检测挡风玻璃内部和外部的雾的系统，消除了已知的自动雨水传感器的严重性能限制。

    Moisture sensor and windshield fog detector using an image sensor
    44.
    发明授权
    Moisture sensor and windshield fog detector using an image sensor 失效
    湿度传感器和挡风玻璃雾度检测器使用图像传感器

    公开(公告)号：US5923027A

    公开(公告)日：1999-07-13

    申请号：US931118

    申请日：1997-09-16

    申请人： Joseph S. Stam ,  Jon H. Bechtel ,  John K. Roberts

    发明人： Joseph S. Stam ,  Jon H. Bechtel ,  John K. Roberts

    IPC分类号： G01N21/17 ,  B60S1/08 ,  B60S1/54 ,  G01N21/47 ,  H04N5/374

    CPC分类号： G06K9/00791 ,  B60S1/0822 ,  B60S1/0844 ,  B60S1/0885 ,  B60S1/0888 ,  G06T7/402 ,  H04N5/225 ,  B60S1/0833 ,  G06T2207/20056 ,  G06T2207/30252 ,  Y10S15/15 ,  Y10S318/02

    摘要： A control system for automatically detecting moisture on the windshield of a vehicle. The automatic moisture detecting system includes an optical system for imaging a portion of the windshield on to an image array sensor, such as a CMOS active pixel sensor. The voltages of each of the pixels which represents the illumination level is converted to a corresponding gray scale value by an analog digital converter. The gray scale values corresponding to the image are stored in memory. The spatial frequency composition of the gray scale values are analyzed to determine the amount of rain present. In order to provide a control signal to control the operation of the windshield wipers of the vehicle as a function of the amount of moisture present. The system is also adapted to detect the level of fog both on the interior of the windshield as well as the exterior of the windshield. By providing a system for automatically detecting the presence of fog on the interior and exterior of the windshield, serious performance limitations of known automatic rain sensors are eliminated.

    摘要翻译： 一种用于自动检测车辆挡风玻璃上的水分的控制系统。 自动水分检测系统包括用于将挡风玻璃的一部分成像到诸如CMOS有源像素传感器的图像阵列传感器上的光学系统。 通过模拟数字转换器将表示照明电平的每个像素的电压转换成相应的灰度值。 与图像对应的灰度值存储在存储器中。 分析灰度值的空间频率组成以确定存在的雨量。 为了提供控制信号以根据存在的水分的量来控制车辆挡风玻璃刮水器的操作。 该系统还适用于在挡风玻璃的内部以及挡风玻璃的外部上检测雾的水平。 通过提供用于自动检测挡风玻璃内部和外部的雾的系统，消除了已知的自动雨水传感器的严重性能限制。

    Solid state lighting units and methods of forming solid state lighting units
    46.
    发明授权
    Solid state lighting units and methods of forming solid state lighting units 有权
    固态照明单元和形成固态照明单元的方法

    公开(公告)号：US08556464B2

    公开(公告)日：2013-10-15

    申请号：US13149212

    申请日：2011-05-31

    申请人： John K. Roberts ,  Paul E. Sims ,  Chenhua You

    发明人： John K. Roberts ,  Paul E. Sims ,  Chenhua You

    IPC分类号： F21V21/00

    CPC分类号： H05B33/0803 ,  F21K9/00 ,  F21Y2105/10 ,  F21Y2115/10 ,  G02F1/133603 ,  G02F2001/133613 ,  G09F9/35 ,  H01L2224/49175 ,  H01L2224/8592 ,  H05B33/0821 ,  H05K1/142 ,  H05K1/181 ,  H05K3/0058 ,  Y10S362/80

    摘要： A solid state lighting unit includes a plurality of solid state lighting tiles including a planar surface and a plurality of solid state light sources on the planar surface. The lighting unit includes a plurality of bar support members. Respective ones of the bar support members include at least two of the plurality of tiles affixed thereon to form respective bar assemblies, and respective ones of the solid state light sources on the solid state lighting tiles of a bar assembly are electrically connected in series so as to be simultaneously energized upon application of a voltage thereto. Methods of forming a solid state lighting unit are also disclosed.

    摘要翻译： 固态照明单元包括在平坦表面上包括平坦表面和多个固态光源的多个固态照明瓦片。 照明单元包括多个杆支撑构件。 杆支撑构件中的各个支撑构件包括固定在其上的多个瓦片中的至少两个以形成相应的杆组件，并且杆组件的固态照明瓦片上的固态光源中的相应的一个固态光源串联电连接，以便 在施加电压时同时通电。 还公开了形成固态照明单元的方法。

    Solid state lighting panels with limited color gamut and methods of limiting color gamut in solid state lighting panels
    47.
    发明授权
    Solid state lighting panels with limited color gamut and methods of limiting color gamut in solid state lighting panels 有权
    具有有限色域的固态照明面板和限制固态照明面板色域的方法

    公开(公告)号：US08449130B2

    公开(公告)日：2013-05-28

    申请号：US12731335

    申请日：2010-03-25

    申请人： John K. Roberts ,  Keith J. Vadas

    发明人： John K. Roberts ,  Keith J. Vadas

    IPC分类号： F21V33/00

    CPC分类号： H05B33/0872 ,  H05B33/0821 ,  H05B33/0863 ,  H05B33/0869

    摘要： Methods of controlling a backlight unit including a plurality of solid state light emitting devices include receiving a request to set a color point of the backlight unit at a requested color point, and determining if the requested color point is within an acceptable range. In response to the requested color point being outside the acceptable range, a modified color point is selected in response to the requested color point, and a color point of the backlight unit is set at the modified color point. Corresponding solid state lighting units are also disclosed.

    摘要翻译： 控制包括多个固态发光器件的背光单元的方法包括：接收在所请求的色点处设置背光单元的色点的请求，以及确定所请求的色点是否在可接受的范围内。 响应于所请求的色点在可接受的范围之外，响应于所请求的色点选择修改的色点，并且将背光单元的色点设置在修改的色点。 还公开了相应的固态照明单元。

    Solid state lighting panels with variable voltage boost current sources
    49.
    发明授权
    Solid state lighting panels with variable voltage boost current sources 有权
    具有可变升压电流源的固态照明面板

    公开(公告)号：US08203286B2

    公开(公告)日：2012-06-19

    申请号：US12977422

    申请日：2010-12-23

    申请人： John K. Roberts ,  Keith J. Vadas ,  Muhinthan Murugesu

    发明人： John K. Roberts ,  Keith J. Vadas ,  Muhinthan Murugesu

    IPC分类号： G05F1/00

    CPC分类号： H05B33/0809 ,  G09G3/3406 ,  G09G3/3413 ,  G09G2320/064 ,  G09G2320/0653 ,  G09G2360/145 ,  H05B33/0803 ,  H05B33/0821 ,  H05B33/0863 ,  H05B33/0869 ,  H05B33/0872

    摘要： A lighting panel system includes a lighting panel having a string of solid state lighting devices and a current supply circuit having a voltage input terminal, a control input terminal, and first and second output terminals coupled to the string of solid state lighting devices. The current supply circuit is configured to supply an on-state drive current to the string of solid state lighting devices in response to a control signal. The current supply circuit includes a charging inductor coupled to the voltage input terminal and an output capacitor coupled to the first output terminal. The current supply circuit is configured to operate in continuous conduction mode in which current continuously flows through the charging inductor while the on-state drive current is supplied to the string of solid state light emitting devices.

    摘要翻译： 照明面板系统包括具有一串固态照明装置的照明面板和具有电压输入端子的电流供给电路，控制输入端子以及耦合到固态照明装置串的第一和第二输出端子。 电流供应电路被配置为响应于控制信号将固态驱动电流提供给固态照明装置串。 电流供应电路包括耦合到电压输入端子的充电电感器和耦合到第一输出端子的输出电容器。 电流供给电路被配置为在连续导通模式下工作，其中电流连续地流过充电电感器，同时将导通状态驱动电流提供给固态发光器件串。