公开(公告)号：US07915928B2

公开(公告)日：2011-03-29

申请号：US12115015

申请日：2008-05-05

Applicant: Dejun Wang

Inventor： Dejun Wang

IPC: H03F3/45

CPC classification number: G05F1/561

Abstract: A system and method for performing voltage to current conversion, the system comprising of a first set of devices that senses the input voltage signal through its input terminal and replicates said input voltage across a second set of devices which then converts said replicated input voltage signal to an output current signal; a third set of devices that transfers the output current signal to output terminals; a differential feedback loop comprising an amplifier positioned between a first one of the first set of devices and a first one of the third set of devices; and a common mode feedback loop that regulates the output average voltage to a reference voltage.

Abstract translation: 一种用于执行电压到电流转换的系统和方法，所述系统包括通过其输入端感测输入电压信号的第一组装置，并且跨越第二组装置复制所述输入电压，然后将所述复制输入电压信号转换成 输出电流信号; 将输出电流信号传送到输出端的第三组装置; 差分反馈回路，包括位于所述第一组装置中的第一组和所述第三组装置中的第一组之间的放大器; 以及将输出平均电压调节到参考电压的共模反馈回路。

公开(公告)号：US07715659B2

公开(公告)日：2010-05-11

申请号：US10893346

申请日：2004-07-19

Applicant: Jiali Zhao ,  Dejun Wang ,  Haibing Ren ,  Seokcheol Kee

Inventor： Jiali Zhao ,  Dejun Wang ,  Haibing Ren ,  Seokcheol Kee

IPC: G06K9/54

CPC classification number: G06K9/00248 ,  G06K9/00288

Abstract: An apparatus for and method of performing a most informative feature extraction (MIFE) method in which a facial image is separated into sub-regions, and each sub-region makes individual contribution for performing facial recognition. Specifically, each sub-region is subjected to a sub-region based adaptive gamma (SadaGamma) correction or sub-region based histogram equalization (SHE) in order to account for different illuminations and expressions. A set of reference images is also divided into sub-regions and subjected to the SadaGamma correction or SHE. A comparison is made between the each corrected sub-region and each corresponding sub-region of the reference images. Based upon the comparisons made individually for the sub-regions of the facial image, one of the stored reference images having the greatest correspondence is chosen. While usable individually, using the MIFE and/or SadaGamma correction or SHE together achieves a lower error ratio in face recognition under different expressions, illuminations and occlusions.

Abstract translation: 一种用于执行其中将面部图像分成子区域的最具信息特征提取（MIFE）方法的装置和方法，并且每个子区域对进行面部识别作出个人贡献。 具体地说，为了解决不同的照明和表达，每个子区域经历基于子区域的自适应伽马（SadaGamma）校正或基于子区域的直方图均衡（SHE）。 一组参考图像也被划分成子区域并进行SadaGamma校正或SHE。 在每个校正子区域和参考图像的每个相应子区域之间进行比较。 基于针对面部图像的子区域的单独比较，选择具有最大对应关系的所存储的参考图像之一。 虽然可以单独使用，但使用MIFE和/或SadaGamma校正或SHE一起可以在不同表达，照明和遮挡下的脸部识别中实现较低的误差比。

公开(公告)号：US08654490B2

公开(公告)日：2014-02-18

申请号：US13398638

申请日：2012-02-16

Applicant: Dejun Wang

Inventor： Dejun Wang

IPC: H02H9/00

CPC classification number: H01L27/0285 ,  H02H9/046

Abstract: An ESD circuit includes a plurality of MOS devices arranged in a stack, wherein each of the MOS devices comprises a source, a drain, and a gate; a voltage source inputting a supply voltage to the stack of MOS devices; a first plurality of resistors dividing the supply voltage to each source and each drain of the MOS devices in the stack; a second plurality of resistors biasing the supply voltage to each gate of the MOS devices in the stack; an inverter device operatively connected to the second plurality of resistors; a time lag circuit that turns the inverter device on and off; and a plurality of capacitors pulling the voltage to each gate of the MOS devices in the stack to the supply voltage upon the inverter device turning off.

Abstract translation: ESD电路包括布置在堆叠中的多个MOS器件，其中每个MOS器件包括源极，漏极和栅极; 电压源，向MOS器件堆叠输入电源电压; 第一多个电阻器，用于将电源电压划分为堆叠中的MOS器件的每个源极和每个漏极; 第二多个电阻器，用于将电源电压偏置到堆叠中的MOS器件的每个栅极; 可操作地连接到第二多个电阻器的逆变器装置; 一个使逆变器装置打开和关闭的时滞电路; 以及多个电容器，其将逆变器装置关闭时将堆叠中的MOS器件的各栅极的电压拉至电源电压。

公开(公告)号：US07626527B1

公开(公告)日：2009-12-01

申请号：US12169763

申请日：2008-07-09

Applicant: Dejun Wang ,  Hassan Elwan

Inventor： Dejun Wang ,  Hassan Elwan

IPC: H03M3/00

CPC classification number: H03M3/366 ,  H03M3/424

Abstract: A continuous time sigma-delta analog-to-digital converter (CT ΣΔADC) including an integrator, which includes an operational amplifier having at least one input terminal that receives an input signal, a feedback mechanism operatively connected to the operational amplifier, at least one capacitor coupled to the operational amplifier and the feedback mechanism, a reset switch coupled to the at least one capacitor, the operational amplifier, and the feedback mechanism, and a single directional voltage-to-current converter coupled to the input terminal. The single directional voltage-to-current converter translates a differential signal voltage only to a differential signal current. The reset switch resets the feedback mechanism. The single directional voltage-to-current converter behaves a one-directional resistor. The integrator prevents current generation when there is a non-linear disturbance at the input terminal of the operational amplifier. The single directional voltage-to-current converter clips an input current that exceeds a threshold value.

Abstract translation: 包括积分器的连续时间Σ-Δ模数转换器（CT SigmaDeltaADC），其包括具有接收输入信号的至少一个输入端的运算放大器，可操作地连接到运算放大器的反馈机构，至少一个 耦合到运算放大器和反馈机构的电容器，耦合到至少一个电容器，运算放大器和反馈机构的复位开关，以及耦合到输入端子的单向电压 - 电流转换器。 单向电压 - 电流转换器将差分信号电压转换为差分信号电流。 复位开关复位反馈机制。 单向电压 - 电流转换器采用单向电阻器。 当在运算放大器的输入端处存在非线性干扰时，积分器防止电流产生。 单向电压 - 电流转换器将超过阈值的输入电流钳位。

公开(公告)号：US07592870B2

公开(公告)日：2009-09-22

申请号：US11837638

申请日：2007-08-13

Applicant: Dejun Wang ,  Hassan Elwan

Inventor： Dejun Wang ,  Hassan Elwan

IPC: H03F3/45

CPC classification number: H03F1/3211 ,  H03F1/26 ,  H03F3/45 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45659 ,  H03F2200/261 ,  H03F2203/45082 ,  H03F2203/45091 ,  H03F2203/45138 ,  H03F2203/45366 ,  H03F2203/45526

Abstract: A low noise, low power differential two-stage amplifier includes a first stage comprising a pair of electrical devices that sense an input signal difference across the pair of electrical devices; and a control feedback loop operatively connected to the first stage, wherein the first stage in combination with the control loop feedback is adapted to place an exact copy of the signal across a first pair of resistive components, wherein the first pair of resistive components are adapted to generate a differential signal current, wherein the control feedback loop is adapted to ensure that the differential signal current goes a second pair of resistive components to generate a voltage output. Preferably, the first and second pair of resistive components are in ratio to produce the exact copy of the signal with some gain at an output of the first stage.

Abstract translation: 低噪声，低功率差分两级放大器包括：第一级，包括一对感测一对电气装置上的输入信号差的电气装置; 以及可操作地连接到第一级的控制反馈回路，其中结合控制回路反馈的第一级适于将信号的精确副本放置在第一对电阻部件上，其中第一对电阻部件被适配 以产生差分信号电流，其中所述控制反馈环路适于确保所述差分信号电流进入第二对电阻分量以产生电压输出。 优选地，第一和第二对电阻分量的比率以在第一级的输出处产生具有一些增益的信号的精确副本。

公开(公告)号：US20090196481A1

公开(公告)日：2009-08-06

申请号：US12365822

申请日：2009-02-04

Applicant: Huanzhong Li ,  Dejun Wang ,  Mei Lin

Inventor： Huanzhong Li ,  Dejun Wang ,  Mei Lin

IPC: G06K9/00

CPC classification number: A61B6/00 ,  A61B6/503 ,  G06F19/00 ,  G06F19/321 ,  G06K9/00 ,  G06K2209/05 ,  G06T7/0012 ,  G06T7/60 ,  G06T2200/24 ,  G06T2207/10116 ,  G06T2207/30061 ,  G16H50/20

Abstract: A method for processing each of chest X-ray images photographed by an X-ray imaging apparatus, includes the steps of: analyzing characteristics of lung images in the chest X-ray images; sorting the chest X-ray images, based on said result of analysis; and displaying the result of sorting.

Abstract translation: 一种用于处理由X射线成像设备拍摄的胸部X射线图像的每一个的方法，包括以下步骤：分析胸部X射线图像中肺图像的特征; 根据分析结果分选胸部X线图像; 并显示排序结果。

公开(公告)号：US20090045876A1

公开(公告)日：2009-02-19

申请号：US11837638

申请日：2007-08-13

Applicant: Dejun Wang ,  Hassan Elwan

Inventor： Dejun Wang ,  Hassan Elwan

IPC: H03F3/45

CPC classification number: H03F1/3211 ,  H03F1/26 ,  H03F3/45 ,  H03F3/45183 ,  H03F3/45475 ,  H03F3/45659 ,  H03F2200/261 ,  H03F2203/45082 ,  H03F2203/45091 ,  H03F2203/45138 ,  H03F2203/45366 ,  H03F2203/45526

Abstract: A low noise, low power differential two-stage amplifier includes a first stage comprising a pair of electrical devices that sense an input signal difference across the pair of electrical devices; and a control feedback loop operatively connected to the first stage, wherein the first stage in combination with the control loop feedback is adapted to place an exact copy of the signal across a first pair of resistive components, wherein the first pair of resistive components are adapted to generate a differential signal current, wherein the control feedback loop is adapted to ensure that the differential signal current goes a second pair of resistive components to generate a voltage output. Preferably, the first and second pair of resistive components are in ratio to produce the exact copy of the signal with some gain at an output of the first stage.

Abstract translation: 低噪声，低功率差分两级放大器包括：第一级，包括一对感测一对电气装置上的输入信号差的电气装置; 以及可操作地连接到第一级的控制反馈回路，其中结合控制回路反馈的第一级适合于将信号的精确副本放置在第一对电阻部件上，其中第一对电阻部件被适配 以产生差分信号电流，其中所述控制反馈环路适于确保所述差分信号电流进入第二对电阻分量以产生电压输出。 优选地，第一和第二对电阻分量的比率以在第一级的输出处产生具有一些增益的信号的精确副本。

公开(公告)号：US20100290707A1

公开(公告)日：2010-11-18

申请号：US12777414

申请日：2010-05-11

Applicant: Dejun Wang ,  Huanzhong Li ,  Tiantian Zhang ,  Xianfeng Ni ,  Kadri Jabri

Inventor： Dejun Wang ,  Huanzhong Li ,  Tiantian Zhang ,  Xianfeng Ni ,  Kadri Jabri

IPC: G06K9/46 ,  G01N23/04

CPC classification number: A61B6/469 ,  A61B6/4441 ,  A61B6/5241

Abstract: An image acquisition method includes determining the starting position, the ending position of a region of interest, and the value of overlap of the region of interest in the two adjacent sub-images, calculating the number of the sub-images required to be captured, the component of field of view at the direction of tube movement and the positions of the tube and the detector corresponding to each sub-image based on the starting position and the ending position of a region of interest and the value of the overlap. The method also includes moving the tube and the detector to each position and capturing the region of interest to obtain sub-images at the positions, and pasting the several sub-images together to form an image of the said region of interest.

Abstract translation: 图像获取方法包括：确定两个相邻子图像中的起始位置，感兴趣区域的结束位置和感兴趣区域的重叠值，计算需要被捕获的子图像的数量， 基于感兴趣区域的开始位置和结束位置以及重叠值，在管移动方向上的视场的分量以及管和检测器对应于每个子图像的位置。 该方法还包括将管和检测器移动到每个位置并捕获感兴趣区域以获得位置处的子图像，并将多个子图像粘贴在一起以形成所述感兴趣区域的图像。

公开(公告)号：US07697736B2

公开(公告)日：2010-04-13

申请号：US11288267

申请日：2005-11-29

Applicant: Seokcheol Kee ,  Dejun Wang ,  Jiali Zhao

Inventor： Seokcheol Kee ,  Dejun Wang ,  Jiali Zhao

IPC: G06K9/00

CPC classification number: G06K9/00248 ,  G06K9/6206 ,  G06K9/6857

Abstract: A face detection method and apparatus using a level-set method. The method includes: laying a first initial shape model over a face image; evolving shape curves of the first initial shape model using the level-set method; detecting first through M-th neighboring boundary points that neighbor first through M-th initial boundary points of the first initial shape model, and that neighbor the evolved shape curves, M being a positive integer larger than 1; laying a modified shape model rendered using the detected first through M-th neighboring boundary points over the face image; detecting a rotation angle of the modified shape model; determining whether the detected rotation angle of the modified shape model is within a predetermined angle range; and selecting one of a second initial shape model, which is rotated to the left, or a third initial shape model, which is rotated to the right, according to the detected rotation angle, and laying the selected initial shape model over the face image, and returning to the detecting of the first through M-th neighboring boundary points, when the detected rotation angle of the modified shape model is outside the predetermined angle range.

Abstract translation: 一种使用水平仪方法的人脸检测方法和装置。 该方法包括：在面部图像上放置第一初始形状模型; 使用水平集方法演化第一初始形状模型的形状曲线; 首先检测通过第一初始形状模型的第M个初始边界点相邻的第M个相邻边界点，以及相邻的演化形状曲线，M是大于1的正整数; 设置使用所检测的第一至第M相邻边界点在面部图像上呈现的修改后的形状模型; 检测修改后的形状模型的旋转角度; 确定所检测到的所述修改的形状模型的旋转角度是否在预定角度范围内; 以及根据所检测的旋转角度选择向左旋转的第二初始形状模型或向右旋转的第三初始形状模型中的一个，以及将所选择的初始形状模型放置在面部图像上， 并且当检测到的修正形状模型的旋转角度超出预定角度范围时，返回到第一至第M相邻边界点的检测。

公开(公告)号：US07280434B2

公开(公告)日：2007-10-09

申请号：US11089213

申请日：2005-03-25

Applicant: Dejun Wang ,  Jiali Zhao ,  Seokcheol Kee

Inventor： Dejun Wang ,  Jiali Zhao ,  Seokcheol Kee

IPC: G01S3/80

CPC classification number: G01S5/18 ,  G01S5/0294

Abstract: A global localization apparatus, medium, and method, with the global localization method including selecting one from a plurality of samples and shifting the selected sample according to a movement of a robot, generating a new sample within a predetermined range of the shifted sample, determining either the shifted sample or the new sample as a next sample at a next time step according to a predetermined condition for the shifted sample and the next sample, repeating for all the samples, and estimating a next position of the robot according to positions of the next samples when the number of next samples is equal to or larger than the maximum number of samples.

Abstract translation: 一种全局定位装置，介质和方法，其具有全局定位方法，包括从多个采样中选择一个并根据机器人的移动移动所选择的样本，在移位样本的预定范围内生成新样本，确定 根据移动的样本和下一个样本的预定条件，在下一个时间步长中将移位样本或新样本作为下一个样本，对于所有样本重复，并根据所述样本的位置估计机器人的下一个位置 当下一个样本的数量等于或大于最大样本数时的下一个样本。