公开(公告)号：US20100277624A1

公开(公告)日：2010-11-04

申请号：US12832303

申请日：2010-07-08

申请人： Boon Keat Tan ,  Chi Mun Ho ,  Kevin Len Li Lim

发明人： Boon Keat Tan ,  Chi Mun Ho ,  Kevin Len Li Lim

IPC分类号： H04N9/64

CPC分类号： G01J1/46 ,  G01J1/0252 ,  G01J3/0286 ,  G01J2001/444 ,  H04N5/361 ,  H04N9/045

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。

公开(公告)号：US07773134B2

公开(公告)日：2010-08-10

申请号：US10801204

申请日：2004-03-15

申请人： Boon Keat Tan ,  Chi Mun Ho ,  Kevin Len Li Lim

发明人： Boon Keat Tan ,  Chi Mun Ho ,  Kevin Len Li Lim

IPC分类号： H04N9/64 ,  H04N5/217

CPC分类号： G01J1/46 ,  G01J1/0252 ,  G01J3/0286 ,  G01J2001/444 ,  H04N5/361 ,  H04N9/045

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。

公开(公告)号：US07435943B1

公开(公告)日：2008-10-14

申请号：US11693600

申请日：2007-03-29

申请人： Farn Hin Chen ,  Gim Eng Chew ,  Boon Keat Tan

发明人： Farn Hin Chen ,  Gim Eng Chew ,  Boon Keat Tan

IPC分类号： G01J3/50

CPC分类号： H01L31/145 ,  G01J3/51 ,  G01J3/513 ,  G01J3/52 ,  G01J3/524 ,  H01L27/1443 ,  H01L31/02162

摘要： A light sensor that generates a first output signal indicative of an intensity of light received from a predetermined direction in a first band of wavelengths is disclosed. The light sensor includes a substrate having first and second photodetectors, a first filter layer, and a controller. The photodetectors are sensitive to light in the infrared portion of the optical spectrum as well as to light in the first band of wavelengths, and generate first and second photodetector signals. The first filter layer transmits light in the first band of wavelengths and light in the infrared portion of the optical spectrum while blocking light in a portion of the visible spectrum outside of the first band of wavelengths, without altering light received by the first photodetector. The controller processes the first and second photodetector signals to produce the first output signal that is corrected for infrared in the input light.

摘要翻译： 公开了一种光传感器，其产生指示在第一波长波段中从预定方向接收的光的强度的第一输出信号。 光传感器包括具有第一和第二光电检测器的基板，第一过滤层和控制器。 光电检测器对光谱的红外部分中的光敏感，并且在第一波长波段中发光，并且产生第一和第二光电检测器信号。 第一滤光层在第一波长的波长范围内的光和光在光谱的红外部分中透射，同时阻挡在第一波长段外的可见光谱的一部分中的光，而不改变由第一光电检测器接收的光。 控制器处理第一和第二光电检测器信号以产生在输入光中被校正为红外的第一输出信号。

公开(公告)号：US07429744B2

公开(公告)日：2008-09-30

申请号：US11789555

申请日：2007-04-24

申请人： Jiin Cheang Cheong ,  Boon Keat Tan ,  Saiful Bahari Saidan ,  Sze Yin Lee

发明人： Jiin Cheang Cheong ,  Boon Keat Tan ,  Saiful Bahari Saidan ,  Sze Yin Lee

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。 该映射仅使用检测到的镜面反射分量的强度，并且没有其他光分量来将检测到的镜面反射分量的强度映射到介质类型。

公开(公告)号：US07423677B2

公开(公告)日：2008-09-09

申请号：US10900759

申请日：2004-07-27

申请人： Boon Keat Tan ,  Chin Hin Oon

发明人： Boon Keat Tan ,  Chin Hin Oon

IPC分类号： H04N9/093

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。

公开(公告)号：US20080068859A1

公开(公告)日：2008-03-20

申请号：US11523409

申请日：2006-09-18

申请人： Yean Loon Ng ,  Sumio Shimonishi ,  Eit Thian Yap ,  Boon Keat Tan

发明人： Yean Loon Ng ,  Sumio Shimonishi ,  Eit Thian Yap ,  Boon Keat Tan

IPC分类号： F21V7/04 ,  F21V9/00

CPC分类号： H05B33/0869 ,  H05B33/086 ,  Y02B20/341 ,  Y10S362/80

摘要： A light source having first and second component light sources, a mixing device, and a controller is disclosed. The first component light source generates light having a perceived color that can be varied within a predetermined two-dimensional region of the CIE 1976 color space in response to a set of color control signals. The second component light source generates white light. The mixing device combines light from the first and second component light sources to produce an output light signal having a perceived output color. The controller generates the set of color control signals in response to an input signal from a source external to the light source, the controller maintaining the perceived output color at a point in the CIE 1976 color space determined by the input signal.

摘要翻译： 公开了具有第一和第二分量光源的光源，混合装置和控制器。 第一分量光源响应于一组颜色控制信号产生具有可以在CIE 1976色空间的预定二维区域内变化的感知颜色的光。 第二分量光源产生白光。 混合装置组合来自第一和第二分量光源的光，以产生具有感知输出颜色的输出光信号。 控制器响应于来自光源外部的源的输入信号产生一组颜色控制信号，控制器在由输入信号确定的CIE 1976色空间中的一个点处保持感知的输出颜色。

公开(公告)号：US07214955B2

公开(公告)日：2007-05-08

申请号：US11102411

申请日：2005-04-08

申请人： Jiin Cheang Cheong ,  Boon Keat Tan ,  Saiful Bahari Saidan ,  Sze Yin Lee

发明人： Jiin Cheang Cheong ,  Boon Keat Tan ,  Saiful Bahari Saidan ,  Sze Yin Lee

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.

公开(公告)号：US20090213062A1

公开(公告)日：2009-08-27

申请号：US12037781

申请日：2008-02-26

申请人： Joh Joh Ng ,  Tak Meng Cheang ,  Boon Keat Tan

发明人： Joh Joh Ng ,  Tak Meng Cheang ,  Boon Keat Tan

IPC分类号： G09G3/36

CPC分类号： H05B33/086 ,  G09G3/3413 ,  G09G3/3426 ,  G09G2320/0242 ,  G09G2320/0646 ,  G09G2360/145 ,  Y02B20/341

摘要： In an embodiment, the invention provides a method of color control in a backlighting system comprising a plurality of light sources, a plurality of color sensors, a plurality of PWM controllers, and a video input for receiving video data. The plurality of light sources is activated during a first operative mode to produce white light. The plurality of light sources is controlled during a second operative mode to produce white light.

摘要翻译： 在一个实施例中，本发明提供了一种背光系统中的颜色控制方法，包括多个光源，多个彩色传感器，多个PWM控制器和用于接收视频数据的视频输入。 多个光源在第一操作模式下被激活以产生白光。 在第二操作模式期间控制多个光源以产生白光。

公开(公告)号：US07544924B2

公开(公告)日：2009-06-09

申请号：US11356477

申请日：2006-02-17

申请人： Siang Leong Foo ,  Boon Keat Tan ,  Yee Loong Chin

发明人： Siang Leong Foo ,  Boon Keat Tan ,  Yee Loong Chin

IPC分类号： G06M7/00

CPC分类号： G06F3/0338

摘要： A directional input device with a light directing shaft that avoids wear and tear caused by physical contact between a shaft and a sensor surface. A directional input device according to the present teachings includes a light emitter and a shaft having a surface that reflects light from the light emitter. A directional input device according to the present teachings further includes a set of light sensing elements that are positioned to detect a position of the shaft by sensing light reflected from the shaft.

摘要翻译： 具有导光轴的方向输入装置，其避免由轴和传感器表面之间的物理接触引起的磨损和撕裂。 根据本教导的定向输入装置包括光发射器和具有反射来自光发射器的光的表面的轴。 根据本发明的方向输入装置还包括一组光感测元件，其被定位成通过感测从轴反射的光来检测轴的位置。

公开(公告)号：US07521669B2

公开(公告)日：2009-04-21

申请号：US11445661

申请日：2006-06-02

申请人： Kheng Hin Toh ,  Lee Ling Teh ,  Chung Min Thor ,  Boon Keat Tan

发明人： Kheng Hin Toh ,  Lee Ling Teh ,  Chung Min Thor ,  Boon Keat Tan

IPC分类号： G01D5/30

CPC分类号： H03M1/28 ,  H03M1/26

摘要： An optical encoder includes a coding element having a track with a track pattern that comprises multiple optically distinguishable sections. The optical encoder compares photodetector outputs with transition-specific thresholds that correspond to transitions between the optically distinguishable sections of the track. The comparisons are used to determine when the transition between two optically distinguishable sections of the track has passed the photodetector. Knowledge of the transition between two optically distinguishable sections is then translated into digital position information.

摘要翻译： 光学编码器包括具有轨道图案的轨道的编码元件，其包括多个可光学区分的区域。 光学编码器将光电检测器输出与对应于轨道的光学可区分部分之间的跃迁的转变特定阈值进行比较。 比较用于确定轨道的两个光学可区分部分之间的转变何时已经通过光电检测器。 然后将两个光学可区分部分之间的转换的知识转换成数字位置信息。