公开(公告)号：US07919781B2

公开(公告)日：2011-04-05

申请号：US11761582

申请日：2007-06-12

申请人： Youfa Wang ,  Chee Mang Wong ,  Teck Bee Chua

发明人： Youfa Wang ,  Chee Mang Wong ,  Teck Bee Chua

IPC分类号： H01L27/15

CPC分类号： H01L25/167 ,  H01L2224/48247 ,  H01L2924/3025 ,  H01L2224/48091 ,  H01L2924/00014 ,  H01L2924/00

摘要： A galvanic isolator having a transmitter die, a receiver die, and a lead frame is disclosed. The transmitter die includes an LED having first and second contacts for powering the LED, and the receiver die includes a photodetector. The lead frame includes first and second transmitter leads, and first and second receiver leads. The transmitter die is bonded to the first lead, the first contact being connected electrically to the first transmitter lead and the second contact being connected to the second transmitter lead. The receiver die is connected to the first and second receiver leads. The LED and the photodetector are positioned such that light generated by the LED is received by the photodetector. The first and second transmitter leads are capacitively coupled to the first receiver lead. The capacitive couplings are characterized by first and second capacitance values that are substantially the same.

摘要翻译： 公开了具有发射器管芯，接收器管芯和引线框架的电流隔离器。 发射器管芯包括具有用于为LED供电的第一和第二触点的LED，并且接收器管芯包括光电检测器。 引线框架包括第一和第二发射器引线以及第一和第二接收器引线。 发射器管芯结合到第一引线，第一触点电连接到第一发射器引线，第二触点连接到第二发射器引线。 接收器管芯连接到第一和第二接收器引线。 LED和光电检测器被定位成使得由LED产生的光被光电检测器接收。 第一和第二发射器引线电容耦合到第一接收器引线。 电容耦合的特征在于基本上相同的第一和第二电容值。

公开(公告)号：US20110066874A1

公开(公告)日：2011-03-17

申请号：US12561919

申请日：2009-09-17

申请人： Kang Shen

发明人： Kang Shen

IPC分类号： G06F1/12

CPC分类号： H04W52/028 ,  Y02D70/144

摘要： An apparatus for clock calibration on a remote device includes a first oscillator, a second oscillator, and a clock calibration module. The first oscillator generates a first clock signal during an active communication mode to facilitate communications between the remote and host devices. The first oscillator is inactive during a sniff mode. The second oscillator generates a second clock signal during both the active communication and sniff modes. The clock calibration module generates an estimated count for the first clock signal approximately at a transition from the sniff mode to the active communication mode. The estimated count is based on a clock ratio of a baseline count of the first clock signal relative to a baseline count of the second clock signal. The clock calibration module also calculates a difference between the estimated count and an actual count from the host device to determine whether to update the clock ratio.

摘要翻译： 用于在远程设备上进行时钟校准的装置包括第一振荡器，第二振荡器和时钟校准模块。 第一振荡器在主动通信模式期间产生第一时钟信号，以便于远程和主机之间的通信。 第一个振荡器在嗅觉模式下不起作用。 第二振荡器在主动通信和嗅探模式期间产生第二时钟信号。 时钟校准模块大致在从嗅觉模式到主动通信模式的转变时产生第一时钟信号的估计计数。 估计的计数基于第一时钟信号相对于第二时钟信号的基线计数的基线计数的时钟比。 时钟校准模块还计算估计计数和来自主机设备的实际计数之间的差异，以确定是否更新时钟比。

公开(公告)号：US20110038508A1

公开(公告)日：2011-02-17

申请号：US12542577

申请日：2009-08-17

申请人： Edward Teoh ,  Willie Song

发明人： Edward Teoh ,  Willie Song

IPC分类号： G06K9/00

CPC分类号： G06F3/0317 ,  G06F1/3203 ,  G06F1/325 ,  G06F3/03543

摘要： A system and method for performing optical navigation selectively uses portions of captured frame of image data for cross-correlation for displacement estimation, which can reduce the power consumption and/or increase the tracking performance at higher speed usage.

摘要翻译： 用于执行光学导航的系统和方法选择性地使用捕获的图像数据帧的部分用于位移估计的互相关，这可以在较高速度使用时降低功耗和/或增加跟踪性能。

公开(公告)号：US07889249B2

公开(公告)日：2011-02-15

申请号：US12832303

申请日：2010-07-08

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

发明人： Boon Keat Tan ,  Chi Mun Ho ,  Kevin Len 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：US07880658B2

公开(公告)日：2011-02-01

申请号：US12533841

申请日：2009-07-31

申请人： Kheng Hin Toh ,  Gim Eng Chew

发明人： Kheng Hin Toh ,  Gim Eng Chew

IPC分类号： H03M1/12

CPC分类号： G01D5/24419 ,  G01D5/245 ,  H03K5/1252 ,  H03K5/156 ,  H03K2005/00052 ,  H03M1/207 ,  H03M1/365 ,  H03M1/367 ,  H03M1/485

摘要： Disclosed are various embodiments of interpolation circuits for use in conjunction with optical encoders. The analog output signals provided by incremental or absolute motion encoders are provided to an interpolation circuit, which is capable of providing high interpolation factor output signals having high timing accuracy. The disclosed interpolation circuits may be implemented using CMOS or BiCMOS processes without undue effort.

摘要翻译： 公开了与光学编码器结合使用的内插电路的各种实施例。 由增量或绝对运动编码器提供的模拟输出信号被提供给能够提供高定时精度的高内插因子输出信号的内插电路。 公开的内插电路可以使用CMOS或BiCMOS处理而不用过度的努力来实现。

公开(公告)号：US07879641B2

公开(公告)日：2011-02-01

申请号：US12626060

申请日：2009-11-25

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： H01L31/18

CPC分类号： G01N21/251 ,  G01J1/0488 ,  G01J1/1626 ,  G01J1/4228 ,  G01N2201/12707

摘要： A method for determining the light intensity of a light signal in each of a plurality of spectral bands is disclosed and a method for fabricating a photodetector is also disclosed.

摘要翻译： 公开了一种用于确定多个光谱带中的每一个中的光信号的光强度的方法，并且还公开了一种用于制造光电检测器的方法。

公开(公告)号：US20110012653A1

公开(公告)日：2011-01-20

申请号：US12505829

申请日：2009-07-20

申请人： Larry Baoqi Li ,  Huaimao Sheng

发明人： Larry Baoqi Li ,  Huaimao Sheng

IPC分类号： H03L7/06

CPC分类号： H03L7/0896

摘要： A charge pump with low charge injection and low clock feed-through for a phase locked loop (PLL). A first source-switched current mirror has a source transistor and an output transistor. The source transistor has a drain connected to a first current source. The output transistor has a drain connected to an output of the charge pump. The gates of the source and output transistors are coupled together by a first conductive link. A switch is coupled between a supply voltage source and a source of the output transistor of the current mirror. A tuner is coupled between the switch and the output transistor of the current mirror. A source of the tuner is coupled to a drain of the switch and to the source of the output transistor. A drain of the tuner is coupled to the first conductive link between the source and output transistors of the current mirror.

摘要翻译： 具有低电荷注入的电荷泵和用于锁相环（PLL）的低时钟馈通。 第一源极开关电流镜具有源极晶体管和输出晶体管。 源极晶体管具有连接到第一电流源的漏极。 输出晶体管的漏极连接到电荷泵的输出端。 源极和输出晶体管的栅极通过第一导电链路耦合在一起。 开关耦合在电源电压源和电流镜的输出晶体管的源极之间。 调谐器耦合在电流镜的开关和输出晶体管之间。 调谐器的源极耦合到开关的漏极和输出晶体管的源极。 调谐器的漏极耦合到电流镜的源极和输出晶体管之间的第一导电连接。

公开(公告)号：US07868281B2

公开(公告)日：2011-01-11

申请号：US11602876

申请日：2006-11-20

申请人： Yat Kheng Leong ,  Sai Mun Lee ,  Thineshwaran G. Krishnan

发明人： Yat Kheng Leong ,  Sai Mun Lee ,  Thineshwaran G. Krishnan

IPC分类号： H01L27/00 ,  G06F3/033

CPC分类号： G06F3/0317 ,  G06F3/03543

摘要： An optical navigation system and method of estimating motion uses a plate with an aperture, a photodetector and an optical system for optical lift detection. The optical system is configured to direct an input light to a target surface through the aperture of the plate and to direct the input light reflected from the target surface and transmitted back through the aperture of the plate toward the photodetector to be detected by the photodetector for lift detection.

摘要翻译： 光学导航系统和估计运动的方法使用具有光圈的光盘，光电检测器和用于光学提升检测的光学系统。 光学系统被配置为通过板的孔将输入光引导到目标表面，并且引导从目标表面反射的输入光，并且通过板的孔传递回到光电检测器，以由光电检测器检测 电梯检测。

公开(公告)号：US07855398B2

公开(公告)日：2010-12-21

申请号：US12039619

申请日：2008-02-28

申请人： Chin Nyap Tan ,  Siang Ling Oon ,  Chu Kun Tan

发明人： Chin Nyap Tan ,  Siang Ling Oon ,  Chu Kun Tan

IPC分类号： H01L33/00

CPC分类号： H01L33/60 ,  H01L33/486 ,  H01L2224/48091 ,  H01L2924/00014

摘要： A light emitting device comprising a ceramic substrate is disclosed. And embodiment of the substrate comprises a mounting portion, a peripheral wall extending from the mounting portion, and a reflective surface extending from the peripheral wall opposite the mounting portion. The reflective surface has a reflective material located thereon. The peripheral wall, the mounting portion, and the reflective surface form a well. A light emitter is located adjacent the mounting portion. A transparent material is located in the well. The peripheral wall is devoid of the reflective material.

摘要翻译： 公开了一种包括陶瓷衬底的发光器件。 并且基板的实施例包括安装部分，从安装部分延伸的周壁和从安装部分相对的周壁延伸的反射表面。 反射表面具有位于其上的反射材料。 周壁，安装部分和反射表面形成井。 光发射器位于安装部分附近。 透明材料位于井中。 周围的墙壁没有反光材料。

公开(公告)号：US07854535B2

公开(公告)日：2010-12-21

申请号：US10669986

申请日：2003-09-23

申请人： Lee Kong Weng ,  Ng Kee Yean ,  Lee Meng Ee

发明人： Lee Kong Weng ,  Ng Kee Yean ,  Lee Meng Ee

IPC分类号： F21V7/00

CPC分类号： H01L33/486 ,  H01L2224/48091 ,  H01L2224/48465 ,  Y10S362/80 ,  H01L2924/00014 ,  H01L2924/00

摘要： Embodiments of the present invention include a light emitting diode package comprising a ceramic cavity comprising a substrate for mounting a light emitting diode and substantially vertical sidewalls for reducing light leakage. The ceramic LED package further includes a metallic coating on a portion of the ceramic substrate for reflecting light in a predetermined direction.

摘要翻译： 本发明的实施例包括一种发光二极管封装，其包括陶瓷腔，该陶瓷腔包括用于安装发光二极管的基板和用于减少漏光的基本上垂直的侧壁。 陶瓷LED封装还包括在陶瓷衬底的一部分上的金属涂层，用于沿预定方向反射光。