公开(公告)号：US06952580B2

公开(公告)日：2005-10-04

申请号：US09735860

申请日：2000-12-12

申请人： Donald C. D. Chang ,  Wah Lim ,  Ming Chang

发明人： Donald C. D. Chang ,  Wah Lim ,  Ming Chang

IPC分类号： H01Q1/00 ,  H01Q1/22 ,  H01Q3/26 ,  H04B7/04 ,  H04B7/185 ,  H04Q7/20 ,  H04H1/00 ,  H04J3/24

CPC分类号： H01Q1/007 ,  H01Q3/26 ,  H04B7/0408 ,  H04B7/18502

摘要： A communication system has a plurality of high altitude devices that are coupled to user terminals through a plurality of dynamic links. The terminal monitors and changes the multiple dynamic links as the position of the user terminal relative to the high altitude devices changes. The terminal transmits to and receives from the user terminals through the high altitude devices using a plurality of datagrams.

摘要翻译： 通信系统具有通过多个动态链路耦合到用户终端的多个高空设备。 当用户终端相对于高空设备的位置发生变化时，终端监视和更改多个动态链路。 终端通过使用多个数据报的高空设备向用户终端发送和接收。

公开(公告)号：US06567052B1

公开(公告)日：2003-05-20

申请号：US09718973

申请日：2000-11-21

申请人： Weizheng Wang ,  Donald C. D. Chang ,  Ming Chang ,  Ying Feria

发明人： Weizheng Wang ,  Donald C. D. Chang ,  Ming Chang ,  Ying Feria

IPC分类号： H01Q300

CPC分类号： H01Q1/28 ,  H01Q3/02

摘要： A stratospheric platform communication system (10) having antenna boresight angles (EL, AZ) that can be adjusted by an adjustable payload antenna (40) according to the requirements of a specific application. The present invention provides an efficient use of available resources by allowing platform systems (10) and GEO satellite systems to share the radio frequency spectrum without interference, and improves the coverage area provided by a stratospheric platform system by allocating stratospheric platforms (12) to specific coverage areas in combination thereby increasing coverage capacity in high traffic areas.

摘要翻译： 具有可根据特定应用的要求由可调节有效载荷天线（40）调节的具有天线视轴角（EL，AZ）的平流层平台通信系统（10）。 本发明通过允许平台系统（10）和GEO卫星系统在没有干扰的情况下共享无线电频谱来提供可用资源的有效使用，并且通过将平流层平台（12）分配给特定的平流层平台系统来提高由平流层平台系统提供的覆盖区域 覆盖区域相结合，从而提高高交通区域的覆盖能力。

公开(公告)号：US07720472B1

公开(公告)日：2010-05-18

申请号：US09661967

申请日：2000-09-14

申请人： Ying Feria ,  Ming Chang ,  Donald C. D. Chang

发明人： Ying Feria ,  Ming Chang ,  Donald C. D. Chang

IPC分类号： H04W4/00

CPC分类号： H04B7/18504

摘要： A system has a stratospheric platform with a payload controller and a phased array antenna having a plurality of elements. A gateway station communicates with the stratospheric platform. The gateway station scales the plurality of elements to form a reconfigurable plurality of beams. The gateway station communicates a control signal to the stratospheric platform to communicate a scaling of the elements. The stratospheric platform configures the elements of the phased array antenna according to the scaling using adaptive interference rejections.

摘要翻译： 系统具有带有有效载荷控制器的平流层平台和具有多个元件的相控阵天线。 网关站与平流层平台通信。 网关站缩放多个元素以形成可重构的多个波束。 网关站将控制信号传送到平流层平台以传送元素的缩放。 平流层平台根据使用自适应干扰抑制的缩放来配置相控阵天线的元件。

公开(公告)号：US06763242B1

公开(公告)日：2004-07-13

申请号：US09661726

申请日：2000-09-14

申请人： Ying Feria ,  Ming Chang ,  Donald C. D. Chang ,  Frank A. Hagen ,  Alan Cha

发明人： Ying Feria ,  Ming Chang ,  Donald C. D. Chang ,  Frank A. Hagen ,  Alan Cha

IPC分类号： H04B700

CPC分类号： H04B7/18506

摘要： A communications system and method of operating the communications system includes a high altitude communication device that communicates with a plurality of user terminals and a gateway station. The gateway station couples the users to terrestrial networks and other users. The high altitude communication device has gateway station that assigns a first code to a beam of a first plurality of users. The gateway station continually determines whether an interference occurs between the first beam and the second beam by determining whether the first interference contour intersects the second interference contour when the first interference contour intersects the second interference contour. The gateway station declares an interference when the contours intersect and reassigns a second resource to the first beam.

摘要翻译： 通信系统和操作通信系统的方法包括与多个用户终端和网关站通信的高空通信设备。 网关站将用户耦合到地面网络和其他用户。 高空通信设备具有将第一代码分配给第一多个用户的波束的网关站。 当第一干涉轮廓与第二干涉轮廓相交时，通过确定第一干涉轮廓是否与第二干涉轮廓相交，连续地确定在第一光束和第二光束之间是否发生干涉。 当轮廓相交并将第二个资源重新分配给第一个波束时，网关站会声明干扰。

公开(公告)号：US06388615B1

公开(公告)日：2002-05-14

申请号：US09587758

申请日：2000-06-06

申请人： Donald C. D. Chang ,  Ying Feria ,  Weizheng Wang ,  Alan Cha ,  Ming Chang ,  Frank A. Hagen ,  Kar W. Yung

发明人： Donald C. D. Chang ,  Ying Feria ,  Weizheng Wang ,  Alan Cha ,  Ming Chang ,  Frank A. Hagen ,  Kar W. Yung

IPC分类号： H01Q322

CPC分类号： H04B7/18504 ,  H04B7/0617 ,  H04B7/086

摘要： A system and method for tracking a user. The system is adapted for use in a wireless communication system and creates a plurality of beams within a coverage area. A first beam is directed at a user in a first microcell and a number of additional beams illuminate microcells immediately adjacent the first microcell. The system is equipped with a mechanism for detecting movement of the user from the first microcell to one of the immediately adjacent microcells. On the detection of movement of the user, the system redirects the first beam from the first microcell to a second microcell, the second microcell being one of the adjacent microcells. In the illustrative embodiment, the system is implemented in a stratospheric platform based communication system including a hub adapted to communicate with a stratospheric platform. A transceiver and a phased array antenna are disposed on the platform to communicate with the hub and with the user. A second antenna is provided on the platform to communicate with the hub. Beamforming and direction are implemented on the hub and communicated to the platform. The user's position is detected with a global positioning system receiver, by measuring the strength of a signal received from the user, or by other suitable means. On detection of user movement from the first microcell, the beamforming system redirects the beam to follow the user into a second microcell. Additional beams around the user's microcell are illuminated to facilitate detection of the users movement.

公开(公告)号：US20060178143A1

公开(公告)日：2006-08-10

申请号：US11389269

申请日：2006-03-24

申请人： Donald Chang ,  Wah Lim ,  Ming Chang

发明人： Donald Chang ,  Wah Lim ,  Ming Chang

IPC分类号： H04Q7/20

CPC分类号： H04B7/18508 ,  H01Q1/007 ,  H01Q3/26 ,  H04B7/0408 ,  H04B7/18506 ,  H04W84/06

摘要： A communication system has a communication infrastructure and a gateway station communicating a communication signal to the communication infrastructure. An airplane having an antenna coupled to a processing circuit for establishing a plurality of multiple communication links corresponding to the communication infrastructure is used. The gateway station generates multiple datagrams from the television signal and transmits the multiple datagrams through the multiple dynamic links. The antenna receives the datagrams from the infrastructure and the processing circuit and reassembles the datagrams into the communication signal.

公开(公告)号：US08204310B2

公开(公告)日：2012-06-19

申请号：US13118045

申请日：2011-05-27

申请人： Yu Zou ,  Jian Wang ,  Dongmei Zhang ,  Ming Chang ,  Shi Han

发明人： Yu Zou ,  Jian Wang ,  Dongmei Zhang ,  Ming Chang ,  Shi Han

IPC分类号： G06K9/00

CPC分类号： G06K9/00416 ,  G06K2209/011

摘要： An exemplary method for online character recognition of East Asian characters includes acquiring time sequential, online ink data for a handwritten East Asian character, conditioning the ink data to produce conditioned ink data where the conditioned ink data includes information as to writing sequence of the handwritten East Asian character and extracting features from the conditioned ink data where the features include a tangent feature, a curvature feature, a local length feature, a connection point feature and an imaginary stroke feature. Such a method may determine neighborhoods for ink data and extract features for each neighborhood. An exemplary Hidden Markov Model based character recognition system may use various exemplary methods for training and character recognition.

摘要翻译： 用于东亚字符的在线字符识别的示例性方法包括获取用于手写东亚字符的时间顺序在线墨水数据，调节墨水数据以产生经调节的墨水数据，其中调节的墨水数据包括关于写入东方手写的顺序的信息 亚洲字符和从调节的墨水数据中提取特征，其中特征包括切线特征，曲率特征，局部长度特征，连接点特征和假想笔划特征。 这种方法可以确定墨水数据的邻域并提取每个邻域的特征。 基于示例性的基于隐马尔可夫模型的角色识别系统可以使用用于训练和角色识别的各种示例性方法。

公开(公告)号：US07974472B2

公开(公告)日：2011-07-05

申请号：US11772032

申请日：2007-06-29

申请人： Yu Zou ,  Ming Chang ,  Shi Han ,  Dongmei Zhang ,  Jian Wang

发明人： Yu Zou ,  Ming Chang ,  Shi Han ,  Dongmei Zhang ,  Jian Wang

IPC分类号： G06K9/00

CPC分类号： G06K9/00416 ,  G06K2209/011

摘要： An exemplary method for online character recognition of East Asian characters includes acquiring time sequential, online ink data for a handwritten East Asian character, conditioning the ink data to produce conditioned ink data where the conditioned ink data includes information as to writing sequence of the handwritten East Asian character and extracting features from the conditioned ink data where the features include a tangent feature, a curvature feature, a local length feature, a connection point feature and an imaginary stroke feature. Such a method may determine neighborhoods for ink data and extract features for each neighborhood. An exemplary Hidden Markov Model based character recognition system may use various exemplary methods for training and character recognition.

摘要翻译： 用于东亚字符的在线字符识别的示例性方法包括获取用于手写东亚字符的时间顺序在线墨水数据，调节墨水数据以产生经调节的墨水数据，其中调节的墨水数据包括关于写入东方手写的顺序的信息 亚洲字符和从调节的墨水数据中提取特征，其中特征包括切线特征，曲率特征，局部长度特征，连接点特征和假想笔划特征。 这种方法可以确定墨水数据的邻域并提取每个邻域的特征。 基于示例性的基于隐马尔可夫模型的角色识别系统可以使用用于训练和角色识别的各种示例性方法。

公开(公告)号：US07805004B2

公开(公告)日：2010-09-28

申请号：US11680566

申请日：2007-02-28

申请人： Shi Han ,  Yu Zou ,  Ming Chang ,  Peng Liu ,  Yi-Jian Wu ,  Lei Ma ,  Frank Soong ,  Dongmei Zhang ,  Jian Wang

发明人： Shi Han ,  Yu Zou ,  Ming Chang ,  Peng Liu ,  Yi-Jian Wu ,  Lei Ma ,  Frank Soong ,  Dongmei Zhang ,  Jian Wang

IPC分类号： G06K9/62

CPC分类号： G06K9/6807 ,  G06K9/468 ,  G06K2209/01 ,  G06K2209/011

摘要： Exemplary techniques are described for selecting radical sets for use in probabilistic East Asian character recognition algorithms. An exemplary technique includes applying a decomposition rule to each East Asian character of the set to generate a progressive splitting graph where the progressive splitting graph comprises radicals as nodes, formulating an optimization problem to find an optimal set of radicals to represent the set of East Asian characters using maximum likelihood and minimum description length and solving the optimization problem for the optimal set of radicals. Another exemplary technique includes selecting an optimal set of radicals by using a general function that characterizes a radical with respect to other East Asian characters and a complex function that characterizes complexity of a radical.

摘要翻译： 描述了用于选择在概率东亚字符识别算法中使用的激进集合的示例性技术。 一个示例性的技术包括将分解规则应用于集合的每个东亚字符以生成逐行分割图，其中渐进分割图包括基数作为节点，制定优化问题以找到最佳的一组基团以表示东亚集 字符使用最大似然和最小描述长度，并解决优化问题的最佳组的自由基。 另一个示例性技术包括通过使用表征相对于其他东亚字符的基数的一般函数和表征激进的复杂度的复杂函数来选择最佳的自由基集合。

公开(公告)号：US20050165323A1

公开(公告)日：2005-07-28

申请号：US10848968

申请日：2004-05-19

申请人： Anthony Montgomery ,  Jason Bold ,  Douglas Carpiaux ,  Ming Chang ,  Douglas Code ,  Ernest Jacobs ,  Scott Micoley ,  Jeffrey Milsap ,  Peter Montgomery ,  Robert Palmer ,  Daniel Strelow ,  Jeffrey Wierschke ,  Elaine Jamieson

发明人： Anthony Montgomery ,  Jason Bold ,  Douglas Carpiaux ,  Ming Chang ,  Douglas Code ,  Ernest Jacobs ,  Scott Micoley ,  Jeffrey Milsap ,  Peter Montgomery ,  Robert Palmer ,  Daniel Strelow ,  Jeffrey Wierschke ,  Elaine Jamieson

IPC分类号： A61B5/00 ,  A61B5/0476 ,  A61B5/04

CPC分类号： A61B5/0006 ,  A61B5/0476 ,  A61B5/7232

摘要： Preferred embodiments of the invention employ a portable and wearable EEG monitoring device having a patient-worn amplifier releasably coupled to a host computer for transmitting EEG signals. When patient disconnection from the host computer is desired, a portable operations device (POD) can be connected to the amplifier. Preferably upon detecting disconnection, a controller causes new EEG signals to be routed to a removable memory or transmitter peripheral card, enabling seamless data acquisition. Upon detecting reconnection between the amplifier and the host computer, the controller causes new EEG signals to be routed to the host computer. The controller also preferably transmits EEG signals stored on the peripheral memory card (if used) to the host computer. Preferred embodiments include a handheld display apparatus for viewing EEG signals and electrode information. Also, preferred embodiments reduce patient tethers by connecting multiple amplifiers in a daisy-chain format (most preferably on a PAN bus).

摘要翻译： 本发明的优选实施例采用便携式和佩戴式EEG监测装置，其具有可释放地耦合到主计算机的用于发射EEG信号的患者佩戴式放大器。 当需要患者与主机断开连接时，便携式操作设备（POD）可以连接到放大器。 优选地，在检测到断开连接时，控制器将新的EEG信号路由到可移动存储器或发射器外围卡，从而实现无缝数据采集。 当检测到放大器和主计算机之间的重新连接时，控制器将新的EEG信号路由到主计算机。 控制器还优选地将存储在外围存储卡（如果使用的话）的EEG信号发送到主计算机。 优选实施例包括用于观看EEG信号和电极信息的手持式显示装置。 此外，优选实施例通过以菊花链格式（最优选在PAN总线上）连接多个放大器来减少患者系绳。