Color sensor circuit with integrated programmable gain selection
    1.
    发明授权
    Color sensor circuit with integrated programmable gain selection 有权
    具有集成可编程增益选择的彩色传感器电路

    公开(公告)号:US07349017B2

    公开(公告)日:2008-03-25

    申请号:US10828707

    申请日:2004-04-21

    IPC分类号: H04N3/14 H04N5/335

    摘要: A color sensor is implemented on a single integrated circuit chip. The color sensor includes a plurality of color sensor circuits and a gain selection control. Each color sensor circuit in the plurality of color sensor circuits includes a light detector, an amplifier and a gain selection circuit. The amplifier is connected to the light detector. The amplifier amplifies a signal from the light detector. The gain selection circuit is connected to the amplifier. The gain selection controls gain of the amplifier. The gain selection circuit includes a variable feedback resistance. The gain selection control selects a separate value of the variable feedback resistance for each color sensor circuit.

    摘要翻译: 彩色传感器在单个集成电路芯片上实现。 颜色传感器包括多个颜色传感器电路和增益选择控制。 多个颜色传感器电路中的每个颜色传感器电路包括光检测器,放大器和增益选择电路。 放大器连接到光检测器。 放大器放大来自光检测器的信号。 增益选择电路连接到放大器。 增益选择控制放大器的增益。 增益选择电路包括可变反馈电阻。 增益选择控制为每个颜色传感器电路选择可变反馈电阻的单独值。

    Color sensing circuit employing charge storage device
    2.
    发明授权
    Color sensing circuit employing charge storage device 有权
    采用电荷存储装置的彩色感应电路

    公开(公告)号:US07491927B2

    公开(公告)日:2009-02-17

    申请号:US10877864

    申请日:2004-06-24

    IPC分类号: G01J3/50

    CPC分类号: G01J3/50 G01J1/46

    摘要: The color sensing circuit includes a light detector to receive light and to generate a signal that is dependent on the received light. The light detector includes a first electrode coupled to a first node and a second electrode coupled to a second predetermined signal. A storage device is provided that includes a first node and a second node coupled to the second predetermined signal. A first switch is provided that selectively couples the first node with the first electrode of the storage device based on a charge control signal. A signal processing circuit is provided that includes a first electrode and an output to generate an output signal that represents the light received by the light detector. A second switch is also provided that selectively couples the first electrode of the storage device with the first electrode of the signal processing circuit based on an evaluate control signal. The signal processing circuit selectively asserts the charge control signal and evaluate control signal.

    摘要翻译: 颜色感测电路包括用于接收光并产生取决于所接收的光的信号的光检测器。 光检测器包括耦合到第一节点的第一电极和耦合到第二预定信号的第二电极。 提供了一种存储设备,其包括耦合到第二预定信号的第一节点和第二节点。 提供了第一开关,其基于充电控制信号选择性地将第一节点与存储装置的第一电极耦合。 提供了一种信号处理电路,其包括第一电极和输出端,以产生表示由光检测器接收的光的输出信号。 还提供了第二开关,其基于评估控制信号,选择性地将存储装置的第一电极与信号处理电路的第一电极耦合。 信号处理电路选择性地断言充电控制信号并评估控制信号。

    System and method for canceling dark photocurrent in a color sensor circuit
    3.
    发明申请
    System and method for canceling dark photocurrent in a color sensor circuit 有权
    在彩色传感器电路中消除暗光电流的系统和方法

    公开(公告)号:US20050200732A1

    公开(公告)日:2005-09-15

    申请号:US10801204

    申请日:2004-03-15

    IPC分类号: G01J3/50 G01J3/46 H04N5/225

    摘要: A system and method for canceling dark photocurrent in a color sensor circuit is disclosed. A color sensor is described including a color sensor circuit, a dark color sensor circuit, and a differential amplifier circuit. The color sensor circuit receives photocurrent from a color component of a light input. The color sensor circuit outputs a first voltage indicating intensity of the color component. The dark color sensor circuit receives dark photocurrent and outputs a second voltage indicating an offset voltage. The differential amplifier circuit is coupled to the color sensor circuit and to the dark color sensor circuit. The differential amplifier circuit receives the first and second voltages and outputs a final output that cancels contributions of the offset voltage in the first voltage due to the dark photo current.

    摘要翻译: 公开了一种在彩色传感器电路中消除暗光电流的系统和方法。 描述了一种颜色传感器,其包括颜色传感器电路,深色传感器电路和差分放大器电路。 颜色传感器电路从光输入的颜色分量接收光电流。 颜色传感器电路输出指示颜色分量的强度的第一电压。 深色传感器电路接收暗光电流并输出指示偏移电压的第二电压。 差分放大器电路耦合到彩色传感器电路和暗色传感器电路。 差分放大器电路接收第一和第二电压,并输出由于暗光电流而消除第一电压中的偏移电压的贡献的最终输出。

    System and Method for Canceling Dark Photocurrent in a Color Sensor Circuit
    4.
    发明申请
    System and Method for Canceling Dark Photocurrent in a Color Sensor Circuit 有权
    在彩色传感器电路中取消暗光电流的系统和方法

    公开(公告)号:US20100277624A1

    公开(公告)日:2010-11-04

    申请号:US12832303

    申请日:2010-07-08

    IPC分类号: H04N9/64

    摘要: A system and method for canceling dark photocurrent in a color sensor circuit is disclosed. A color sensor is described including a color sensor circuit, a dark color sensor circuit, and a differential amplifier circuit. The color sensor circuit receives photocurrent from a color component of a light input. The color sensor circuit outputs a first voltage indicating intensity of the color component. The dark color sensor circuit receives dark photocurrent and outputs a second voltage indicating an offset voltage. The differential amplifier circuit is coupled to the color sensor circuit and to the dark color sensor circuit. The differential amplifier circuit receives the first and second voltages and outputs a final output that cancels contributions of the offset voltage in the first voltage due to the dark photocurrent.

    摘要翻译: 公开了一种在彩色传感器电路中消除暗光电流的系统和方法。 描述了一种颜色传感器,其包括颜色传感器电路,深色传感器电路和差分放大器电路。 颜色传感器电路从光输入的颜色分量接收光电流。 颜色传感器电路输出指示颜色分量的强度的第一电压。 深色传感器电路接收暗光电流并输出指示偏移电压的第二电压。 差分放大器电路耦合到彩色传感器电路和暗色传感器电路。 差分放大器电路接收第一和第二电压,并输出由于暗光电流而消除第一电压中的偏移电压的贡献的最终输出。

    System and method for canceling dark photocurrent in a color sensor circuit
    5.
    发明授权
    System and method for canceling dark photocurrent in a color sensor circuit 有权
    在彩色传感器电路中消除暗光电流的系统和方法

    公开(公告)号:US07773134B2

    公开(公告)日:2010-08-10

    申请号:US10801204

    申请日:2004-03-15

    IPC分类号: H04N9/64 H04N5/217

    摘要: A system and method for canceling dark photocurrent in a color sensor circuit is disclosed. A color sensor is described including a color sensor circuit, a dark color sensor circuit, and a differential amplifier circuit. The color sensor circuit receives photocurrent from a color component of a light input. The color sensor circuit outputs a first voltage indicating intensity of the color component. The dark color sensor circuit receives dark photocurrent and outputs a second voltage indicating an offset voltage. The differential amplifier circuit is coupled to the color sensor circuit and to the dark color sensor circuit. The differential amplifier circuit receives the first and second voltages and outputs a final output that cancels contributions of the offset voltage in the first voltage due to the dark photocurrent.

    摘要翻译: 公开了一种在彩色传感器电路中消除暗光电流的系统和方法。 描述了一种颜色传感器,其包括颜色传感器电路,深色传感器电路和差分放大器电路。 颜色传感器电路从光输入的颜色分量接收光电流。 颜色传感器电路输出指示颜色分量的强度的第一电压。 深色传感器电路接收暗光电流并输出指示偏移电压的第二电压。 差分放大器电路耦合到彩色传感器电路和暗色传感器电路。 差分放大器电路接收第一和第二电压,并输出由于暗光电流而消除第一电压中的偏移电压的贡献的最终输出。

    PHOTODETECTOR ARRAY AND CODEWHEEL CONFIGURATION FOR FLEXIBLE OPTICAL ENCODER RESOLUTION
    6.
    发明申请
    PHOTODETECTOR ARRAY AND CODEWHEEL CONFIGURATION FOR FLEXIBLE OPTICAL ENCODER RESOLUTION 失效
    柔性光编码器分辨率的光电放大器阵列和编码配置

    公开(公告)号:US20080245956A1

    公开(公告)日:2008-10-09

    申请号:US12140645

    申请日:2008-06-17

    IPC分类号: G01D5/30

    CPC分类号: G01D5/3473

    摘要: An optical encoder includes a coding element having a track with multiple transparent sections, a light source positioned to output light to the track, and a photodetector array, positioned to detect light that passes through the transparent sections of the track. The photodetectors of the photodetector array have larger width dimensions than the width dimensions of the transparent sections of the track. Resolution of the optical encoder may be adjusted by changing the resolution of the coding element.

    摘要翻译: 一种光学编码器包括具有多个透明部分的光道的编码元件,被定位成将光输出到该光道的光源,以及一个定位成检测通过该光道的透明部分的光的光电检测器阵列。 光电检测器阵列的光电检测器具有比轨道的透明部分的宽度尺寸更大的宽度尺寸。 可以通过改变编码元件的分辨率来调整光学编码器的分辨率。

    Optical generic switch panel
    7.
    发明授权
    Optical generic switch panel 失效
    光通用开关面板

    公开(公告)号:US07310090B2

    公开(公告)日:2007-12-18

    申请号:US10810157

    申请日:2004-03-25

    IPC分类号: G06F3/042

    摘要: A switch panel having a touch plate, image generator, and imaging system. The touch plate includes an optically transparent layer having first and second sides. The optically transparent layer having an index of refraction greater than that of air. A light source generates a light signal that is reflected between the first and second sides of the touch plate within the transparent layer. The imaging system records an image of the first surface. An image generator displays an image that includes a plurality of button positions to a person viewing the touch plate from the first side. A portion of the light signal is reflected toward the second surface at an angle greater than the critical angle in the optically transparent layer when the first surface is touched. The imaging system determines the location of the touch from the location of the reflected light.

    摘要翻译: 具有触摸板,图像发生器和成像系统的开关面板。 触摸板包括具有第一和第二侧面的光学透明层。 光学透明层的折射率大于空气的折射率。 光源产生在透明层内的触摸板的第一和第二面之间反射的光信号。 成像系统记录第一表面的图像。 图像生成器从第一侧向向观看触摸板的人显示包括多个按钮位置的图像。 当第一表面被触摸时,光信号的一部分以大于光学透明层中的临界角的角度朝向第二表面反射。 成像系统从反射光的位置确定触摸的位置。

    Optical generic switch panel
    8.
    发明申请
    Optical generic switch panel 失效
    光通用开关面板

    公开(公告)号:US20050212774A1

    公开(公告)日:2005-09-29

    申请号:US10810157

    申请日:2004-03-25

    摘要: A switch panel having a touch plate, image generator, and imaging system. The touch plate includes an optically transparent layer having first and second sides. The optically transparent layer having an index of refraction greater than that of air. A light source generates a light signal that is reflected between the first and second sides of the touch plate within the transparent layer. The imaging system records an image of the first surface. An image generator displays an image that includes a plurality of button positions to a person viewing the touch plate from the first side. A portion of the light signal is reflected toward the second surface at an angle greater than the critical angle in the optically transparent layer when the first surface is touched. The imaging system determines the location of the touch from the location of the reflected light.

    摘要翻译: 具有触摸板,图像发生器和成像系统的开关面板。 触摸板包括具有第一和第二侧面的光学透明层。 光学透明层的折射率大于空气的折射率。 光源产生在透明层内的触摸板的第一和第二面之间反射的光信号。 成像系统记录第一表面的图像。 图像生成器从第一侧向向观看触摸板的人显示包括多个按钮位置的图像。 当第一表面被触摸时,光信号的一部分以大于光学透明层中的临界角的角度朝向第二表面反射。 成像系统从反射光的位置确定触摸的位置。

    System and method for canceling dark photocurrent in a color sensor circuit
    9.
    发明授权
    System and method for canceling dark photocurrent in a color sensor circuit 有权
    在彩色传感器电路中消除暗光电流的系统和方法

    公开(公告)号:US07889249B2

    公开(公告)日:2011-02-15

    申请号:US12832303

    申请日:2010-07-08

    IPC分类号: H04N9/64 H04N5/217

    摘要: A system and method for canceling dark photocurrent in a color sensor circuit is disclosed. A color sensor is described including a color sensor circuit, a dark color sensor circuit, and a differential amplifier circuit. The color sensor circuit receives photocurrent from a color component of a light input. The color sensor circuit outputs a first voltage indicating intensity of the color component. The dark color sensor circuit receives dark photocurrent and outputs a second voltage indicating an offset voltage. The differential amplifier circuit is coupled to the color sensor circuit and to the dark color sensor circuit. The differential amplifier circuit receives the first and second voltages and outputs a final output that cancels contributions of the offset voltage in the first voltage due to the dark photocurrent.

    摘要翻译: 公开了一种在彩色传感器电路中消除暗光电流的系统和方法。 描述了一种颜色传感器,其包括颜色传感器电路,深色传感器电路和差分放大器电路。 颜色传感器电路从光输入的颜色分量接收光电流。 颜色传感器电路输出指示颜色分量的强度的第一电压。 深色传感器电路接收暗光电流并输出指示偏移电压的第二电压。 差分放大器电路耦合到彩色传感器电路和暗色传感器电路。 差分放大器电路接收第一和第二电压,并输出由于暗光电流而消除第一电压中的偏移电压的贡献的最终输出。

    Photodetector array and codewheel configuration for flexible optical encoder resolution
    10.
    发明授权
    Photodetector array and codewheel configuration for flexible optical encoder resolution 失效
    光电检测器阵列和码盘配置,灵活的光学编码器分辨率

    公开(公告)号:US07638756B2

    公开(公告)日:2009-12-29

    申请号:US12140645

    申请日:2008-06-17

    IPC分类号: G01D5/34

    CPC分类号: G01D5/3473

    摘要: An optical encoder includes a coding element having a track with multiple transparent sections, a light source positioned to output light to the track, and a photodetector array, positioned to detect light that passes through the transparent sections of the track. The photodetectors of the photodetector array have larger width dimensions than the width dimensions of the transparent sections of the track. Resolution of the optical encoder may be adjusted by changing the resolution of the coding element.

    摘要翻译: 一种光学编码器包括具有多个透明部分的光道的编码元件,被定位成将光输出到该光道的光源,以及一个定位成检测通过该光道的透明部分的光的光电检测器阵列。 光电检测器阵列的光电检测器具有比轨道的透明部分的宽度尺寸更大的宽度尺寸。 可以通过改变编码元件的分辨率来调整光学编码器的分辨率。