Reflective optical encoder
    2.
    发明申请
    Reflective optical encoder 失效
    反光光学编码器

    公开(公告)号:US20070057058A1

    公开(公告)日:2007-03-15

    申请号:US11226681

    申请日:2005-09-14

    IPC分类号: G06K7/10 G06M1/06

    CPC分类号: G06K7/10722

    摘要: In one embodiment, an optical encoder includes a code member, a light source, and a detector array. The code member has a plurality of reflectors thereon; and the light source is positioned to illuminate an area of the code member that includes at least one of the reflectors. The detector array includes at least one detector set, each of which includes a plurality of detector elements. The code member and the detector array are moveable with respect to one another along a displacement direction, and as the code member moves with respect to the detector array, the reflectors on the code member reflect light emitted by the light source to produce circular or elliptical light spots that travel across the detector array.

    摘要翻译: 在一个实施例中,光学编码器包括代码构件,光源和检测器阵列。 代码部件上具有多个反射器; 并且光源被定位成照亮包括至少一个反射器的代码构件的区域。 检测器阵列包括至少一个检测器组,每个检测器组包括多个检测器元件。 代码构件和检测器阵列可沿着位移方向相对于彼此移动,并且随着代码构件相对于检测器阵列移动,代码构件上的反射器反射由光源发射的光以产生圆形或椭圆形 穿过检测器阵列的光斑。

    Temperature compensation method and apparatus for color sensors

    公开(公告)号:US20060022122A1

    公开(公告)日:2006-02-02

    申请号:US10903112

    申请日:2004-07-30

    IPC分类号: G01J1/00 G01J3/50 H01J40/14

    CPC分类号: G01J3/50 G01J3/524

    摘要: Method and apparatus for compensating for variations in the output signal of a color sensor due to varying temperature of the color sensor. The color sensor receives light and generates an output signal that is based on the received light. The temperature compensation mechanism measures the temperature of the color sensor and uses the measured temperature to selectively adjust the output signal of the color sensor to generate a compensated output signal that is not dependent on temperature of the color sensor.

    Color sensing circuit employing charge storage device
    4.
    发明申请
    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:US20050285017A1

    公开(公告)日:2005-12-29

    申请号:US10877864

    申请日:2004-06-24

    申请人: Boon Tan Chi Ho Len Lim

    发明人: Boon Tan Chi Ho Len Lim

    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。

    Media recognition using a single light detector
    5.
    发明申请
    Media recognition using a single light detector 有权
    使用单个光检测器进行介质识别

    公开(公告)号:US20070194257A1

    公开(公告)日:2007-08-23

    申请号:US11789555

    申请日:2007-04-24

    IPC分类号: G01N21/86 G01V8/00

    CPC分类号: G01N21/55 B41J11/009

    摘要: Media type is detected. A light beam is produced. The intensity of a specular reflectance component of the light beam is detected. The specular reflectance component results from the light beam being reflected off media. An indication of detected intensity of the specular reflectance component is compared to a mapping to determine media type of the media. The mapping maps detected intensity of the specular reflectance component to media type. The mapping uses only the detected intensity of the specular reflectance component, and no other components of light, to map detected intensity of the specular reflectance component to media type.

    摘要翻译: 检测到介质类型。 产生光束。 检测光束的镜面反射分量的强度。 来自光束的镜面反射分量由介质反射。 将检测到的镜面反射率分量的强度的指示与映射进行比较以确定介质的介质类型。 映射将检测到的镜面反射分量的强度映射到介质类型。 映射仅使用检测到的镜面反射分量的强度,并且没有其他光的分量来将检测到的镜面反射分量的强度映射到介质类型。

    Media recognition using a single light detector
    6.
    发明申请
    Media recognition using a single light detector 有权
    使用单个光检测器进行介质识别

    公开(公告)号:US20060226379A1

    公开(公告)日:2006-10-12

    申请号:US11102411

    申请日:2005-04-08

    IPC分类号: G01N21/86

    CPC分类号: G01N21/55 B41J11/009

    摘要: Media type is detected. A light beam is produced. The intensity of a specular reflectance component of the light beam is detected. The specular reflectance component results from the light beam being reflected off media. An indication of detected intensity of the specular reflectance component is compared to a mapping to determine media type of the media. The mapping maps detected intensity of the specular reflectance component to media type. The mapping uses only the detected intensity of the specular reflectance component, and no other components of light, to map detected intensity of the specular reflectance component to media type.

    摘要翻译: 检测到介质类型。 产生光束。 检测光束的镜面反射分量的强度。 来自光束的镜面反射分量由介质反射。 将检测到的镜面反射率分量的强度的指示与映射进行比较以确定介质的介质类型。 映射将检测到的镜面反射分量的强度映射到介质类型。 映射仅使用检测到的镜面反射分量的强度,并且没有其他光的分量来将检测到的镜面反射分量的强度映射到介质类型。

    Color detection using grayscale and position information
    8.
    发明申请
    Color detection using grayscale and position information 有权
    使用灰度和位置信息进行颜色检测

    公开(公告)号:US20060120597A1

    公开(公告)日:2006-06-08

    申请号:US11007498

    申请日:2004-12-07

    IPC分类号: G06K9/00

    CPC分类号: H04N1/465 H04N1/6033

    摘要: The color of a surface is determined by tracking the position of the surface using grayscale image sensing and then using captured grayscale image information, position information, and grayscale-to-color conversion information to determine color. In one embodiment, the technique requires establishing grayscale-to-color conversion information and a relationship between position and the grayscale-to-color conversion information. A calibration pattern is printed on a piece of paper and the surface of the paper is illuminated. Grayscale image information and position information related to the surface is generated in response to the illumination. Color-specific portions of the grayscale-to-color conversion information that are to be used in color determination are selected based on the position information. Grayscale image information related to the calibration pattern is then compared to the selected color-specific portions of the grayscale-to-color conversion information to determine the color of the calibration pattern.

    摘要翻译: 通过使用灰度图像感测跟踪表面的位置,然后使用捕获的灰度图像信息,位置信息和灰度到颜色转换信息来确定颜色来确定表面的颜色。 在一个实施例中,该技术需要建立灰度到颜色转换信息以及位置与灰度到颜色转换信息之间的关系。 校准图案印在一张纸上,纸张的表面被照亮。 响应于照明产生与表面相关的灰度图像信息和位置信息。 基于位置信息来选择要用于颜色确定的灰度到颜色转换信息的颜色特定部分。 然后将与校准图案相关的灰度图像信息与灰度到颜色转换信息的所选颜色特定部分进行比较,以确定校准图案的颜色。

    Color filter method and apparatus
    9.
    发明申请
    Color filter method and apparatus 有权
    滤色器方法和装置

    公开(公告)号:US20060023093A1

    公开(公告)日:2006-02-02

    申请号:US10900759

    申请日:2004-07-27

    申请人: Boon Tan Chin Oon

    发明人: Boon Tan Chin Oon

    IPC分类号: H04N9/64 H04N5/238

    CPC分类号: H04N9/09

    摘要: Method and apparatus for generating an output signal that represents light with a desired color profile. A first sensor is provided to receive light and based thereon to generate a first signal with a first color profile. A color sensor is also provided that receives light and based thereon generates a second signal with a second color profile. A signal generation mechanism that is coupled to the first sensor and the color sensor and receives the first signal with a first color profile, receives the second signal with a second color profile, and performs a predetermined operation on the first signal and the second signal to generate the output signal with the desired color profile.

    摘要翻译: 用于产生表示具有所需颜色特征的光的输出信号的方法和装置。 提供第一传感器以接收光并基于其产生具有第一颜色特征的第一信号。 还提供一种接收光并基于其产生具有第二颜色特征的第二信号的颜色传感器。 一种信号产生机构,其耦合到第一传感器和颜色传感器并且接收具有第一颜色分布的第一信号,以第二颜色分布接收第二信号,并且对第一信号和第二信号执行预定的操作, 生成具有所需颜色配置文件的输出信号。

    Color photodetector array
    10.
    发明申请
    Color photodetector array 有权
    彩色光电探测器阵列

    公开(公告)号:US20050205765A1

    公开(公告)日:2005-09-22

    申请号:US10804272

    申请日:2004-03-18

    摘要: A color sensor for measuring light from a light source and the method for fabricating the color sensor. The color sensor includes a plurality of photodetectors, a plurality of primary color filters and a trim filter. Each primary color filter includes a layer of material between the light source and a corresponding one of the photodetectors. Each primary color filter preferentially transmits light in a corresponding band of wavelengths about a characteristic wavelength. The trim filter is located between the light source and the photodetectors and includes a layer of material that preferentially attenuates light at a first trim wavelength between two of the characteristic wavelengths. In one embodiment, the trim filter further preferentially attenuates light at a second trim wavelength, the first wavelength being less than one of the characteristic wavelengths and the second wavelength being greater than that characteristic wavelength.

    摘要翻译: 用于测量来自光源的光的颜色传感器和用于制造颜色传感器的方法。 颜色传感器包括多个光电检测器,多个原色滤光器和修整滤光器。 每个原色滤光器包括在光源和对应的一个光电检测器之间的材料层。 每个原色滤光器优先透射相对于特征波长的相应波段的光。 修整过滤器位于光源和光电检测器之间,并且包括优先衰减两个特征波长之间的第一微调波长的光的材料层。 在一个实施例中,调整滤波器还优先衰减第二微调波长的光,第一波长小于特征波长中的一个,第二波长大于该特征波长。