公开(公告)号：US20050226624A1

公开(公告)日：2005-10-13

申请号：US10820915

申请日：2004-04-07

申请人： Stanislav Ionov ,  Thomas Ball ,  Peter Chu ,  William Hoult

发明人： Stanislav Ionov ,  Thomas Ball ,  Peter Chu ,  William Hoult

IPC分类号： H04J14/08 ,  H04L25/49 ,  H04L27/10

CPC分类号： H04L27/10 ,  H04J14/08 ,  H04L25/4902

摘要： Systems and methods are disclosed herein to provide various optical techniques. For example, in accordance with an embodiment of the present invention, a pulse position modulation discriminator architecture is disclosed for discriminating temporal positions of PPM-encoded optical pulses by converting them from time modulated to frequency modulated signals. As another example, time division multiplexed optical signals may be translated to wavelength division multiplexed optical signals. One or more of the architectures disclosed herein may be implemented, for example, to provide PPM to FM or time to wavelength conversion for receiver or transmitter applications.

摘要翻译： 本文公开了提供各种光学技术的系统和方法。 例如，根据本发明的实施例，公开了一种脉冲位置调制鉴别器架构，用于通过将PPM编码的光脉冲从时间调制信号转换成调频信号来鉴别时间位置。 作为另一示例，时分复用光信号可以被转换为波分复用光信号。 例如，可以实现本文公开的一个或多个体系结构，以向接收机或发射机应用提供PPM到FM或波长转换的时间。

公开(公告)号：US20050122190A1

公开(公告)日：2005-06-09

申请号：US10727691

申请日：2003-12-04

申请人： Peter Chu

发明人： Peter Chu

IPC分类号： H01P1/202 ,  H01P1/205

CPC分类号： H01P1/202

摘要： A microwave filter for use at VHF frequencies provides a relatively high-Q without the need for the microstrip line or bulky mechanical resonators and varactors. The transmission line filter in accordance with the present invention utilizes a coaxial resonator, which obviates the need for microstrip line and strip line resonators, thus making the use of large ceramic substrates unnecessary. In accordance with another embodiment of the invention, switched capacitor arrays are used in place of the conventional varactors diode. As such, a microwave filter, suitable for VHF frequencies, is provided using relatively low cost off-the-shelf ceramic resonators which can be used to build a relatively low insertion loss high rejection band pass filter in the aviation band frequency range of 100 MHz to 200 MHz.

摘要翻译： 用于VHF频率的微波滤波器提供相对较高的Q，而不需要微带线或体积大的机械谐振器和变容二极管。 根据本发明的传输线滤波器利用同轴谐振器，其消除了对微带线和带状线谐振器的需要，从而不需要使用大的陶瓷衬底。 根据本发明的另一实施例，使用开关电容器阵列来代替传统的变容二极管。 因此，适用于VHF频率的微波滤波器使用相对低成本的现成陶瓷谐振器来提供，其可用于在100MHz的航空频带频率范围内构建相对较低的插入损耗高阻抗带通滤波器 至200 MHz。

公开(公告)号：US20050122163A1

公开(公告)日：2005-06-09

申请号：US10731615

申请日：2003-12-08

申请人： Peter Chu

发明人： Peter Chu

IPC分类号： H03F1/02 ,  H03F3/217 ,  H03F3/68 ,  H03F3/38

CPC分类号： H03F3/68 ,  H03F1/0227 ,  H03F3/217

摘要： An EER amplifier for amplifying an RF signal includes: (II) a first RF amplifier for amplifying the phase portion of the signal; (III) an EER modulator for amplifying the envelope or baseband portion of the signal, including: A) a high frequency operational amplifier; B) a power amplifier; C) a feedback control loop including: (1) a current-to-voltage conversion amplifier having an input coupled to a current monitoring output of the power amplifier and an output, (2) an input buffer amplifier having an input coupled to receive the envelope signal and an output; (3) a summing amplifier having: (a) an input coupled to the outputs of: (a) the current-to-voltage conversion amplifier and (b) the input buffer amplifier, and (b) an output coupled to the current control input of the power amplifier.

摘要翻译： 用于放大RF信号的EER放大器包括：（II）用于放大信号的相位部分的第一RF放大器; （III）用于放大信号的包络或基带部分的EER调制器，包括：A）高频运算放大器; B）功率放大器; C）反馈控制回路，包括：（1）电流 - 电压转换放大器，其具有耦合到功率放大器的电流监控输出的输入和输出;（2）输入缓冲放大器，具有耦合以接收 包络信号和输出; （3）一个求和放大器，具有：（a）耦合到输出的输入：（a）电流 - 电压转换放大器和（b）输入缓冲放大器，和（b）耦合到电流控制 输入功率放大器。

公开(公告)号：US20050042211A1

公开(公告)日：2005-02-24

申请号：US10753139

申请日：2004-01-07

申请人： Michael Kenoyer ,  Craig Malloy ,  Richard Washington ,  Peter Chu

发明人： Michael Kenoyer ,  Craig Malloy ,  Richard Washington ,  Peter Chu

IPC分类号： H04N7/15 ,  H04M3/56 ,  H04N7/14 ,  A61K38/54

CPC分类号： H04N7/147 ,  H04N7/142 ,  H04N7/15

摘要： A system and method for high resolution video conferencing is shown and described. A transmitting station and a receiving station including video cameras or sensors, a plurality of microphones and speakers, video, audio and communication processing engines are disclosed. Video is processed and transferred through the system allowing for multiple video streams to be produced and audio is processed and transferred through the system allowing for sound to be played back with an indication of position in relation to the videoconferencing system.

摘要翻译： 显示和描述了用于高分辨率视频会议的系统和方法。 公开了包括摄像机或传感器的发送站和接收站，多个麦克风和扬声器，视频，音频和通信处理引擎。 通过系统处理和传输视频，允许产生多个视频流，并且通过系统处理和传送音频，允许以与视频会议系统相关的位置的指示来播放声音。

公开(公告)号：US5252841A

公开(公告)日：1993-10-12

申请号：US6189

申请日：1993-01-19

申请人： Cheng P. Wen ,  Chan S. Wu ,  Peter Chu

发明人： Cheng P. Wen ,  Chan S. Wu ,  Peter Chu

IPC分类号： H01L21/331 ,  H01L29/737 ,  H01L29/161 ,  H01L29/205 ,  H01L29/72

CPC分类号： H01L21/263 ,  H01L29/66318 ,  H01L29/7371

摘要： The base-collector capacitance in a heterojunction bipolar transistor (HBT) (50) is reduced, thereby providing increased cutoff frequency and power gain, by eliminating a portion of a collector contact layer (54) which normally underlies a base electrode (66). A similar effect may be produced by forming the collector contact layer (54) such that it initially extends into the area (54c) under the base electrode (66), and subsequently rendering the collector contact layer (54) in this area (54c) semiinsulative by proton bombardment. A ballast resistor layer (70) is formed between an emitter layer (62) and an overlying emitter electrode (68) to prevent thermal runaway and hot spot formation. A plurality of the HBTs (50) may be arranged in a distributed amplifier configuration (80) including contact electrode bus lines (84,88) having a geometry designed to provide high thermal efficiency, and input and output circuit matching characteristics.

摘要翻译： 异相结双极晶体管（HBT）（50）中的基极集电极电容减小，从而通过消除通常位于基极（66）下面的集电极接触层（54）的一部分来提供增加的截止频率和功率增益。 可以通过形成集电极接触层（54）使其最初延伸到基极（66）下方的区域（54c）中，并且随后使该集电极接触层（54）在该区域（54c）中形成，可以产生类似的效果， 半质子轰击。 在发射极层（62）和上覆发射电极（68）之间形成镇流电阻层（70），以防止热失控和热点形成。 多个HBT（50）可以布置在分布式放大器配置（80）中，包括具有设计用于提供高热效率的几何形状的接触电极总线（84,88）以及输入和输出电路匹配特性。

公开(公告)号：US09317841B2

公开(公告)日：2016-04-19

申请号：US13458855

申请日：2012-04-27

申请人： Hugo Olliphant ,  Franck Chastagnol ,  Yi-Ling Su ,  William Wu ,  Chris Brown ,  Thach Dang ,  Thomas Veino ,  Carol Gunby ,  Peter Chu ,  Steve Chen

发明人： Hugo Olliphant ,  Franck Chastagnol ,  Yi-Ling Su ,  William Wu ,  Chris Brown ,  Thach Dang ,  Thomas Veino ,  Carol Gunby ,  Peter Chu ,  Steve Chen

IPC分类号： G06Q40/00 ,  G06Q20/02 ,  G06Q20/10 ,  G06Q20/12

CPC分类号： G06Q20/405 ,  G06Q20/02 ,  G06Q20/10 ,  G06Q20/102 ,  G06Q20/12 ,  G06Q40/00

摘要： A method and system for facilitating online payments are disclosed. According to one aspect of the present invention, a payment agreement is established at a payment service provider that defines terms of a payment relationship between a merchant and a user. The establishing of the payment agreement includes linking the payment agreement with a payment account of the merchant or user stored at the payment service provider. After establishing the payment agreement, a payment request associated with a transaction is received, whereby the payment request includes a unique identifier to identify the payment agreement stored at the payment service provider. Based on a verification that the payment request complies with terms of the payment agreement, the payment request is processed.

摘要翻译： 公开了用于促进在线支付的方法和系统。 根据本发明的一个方面，在定义商家和用户之间的支付关系的条款的支付服务提供商处建立支付协议。 支付协议的建立包括将付款协议与存储在支付服务提供商处的商家或用户的支付帐户相连接。 在建立支付协议之后，接收与交易相关联的支付请求，由此支付请求包括用于识别存储在支付服务提供商处的支付协议的唯一标识符。 根据支付请求符合付款协议条款的验证，处理付款请求。

公开(公告)号：US08395653B2

公开(公告)日：2013-03-12

申请号：US12782137

申请日：2010-05-18

申请人： Jinwei Feng ,  Peter Chu ,  Wayne Dunlap ,  Jonathan Gallmeier

发明人： Jinwei Feng ,  Peter Chu ,  Wayne Dunlap ,  Jonathan Gallmeier

IPC分类号： H04N7/15

CPC分类号： H04N7/15 ,  H04N7/142 ,  H04N7/147

摘要： A videoconferencing apparatus automatically tracks speakers in a room and dynamically switches between a controlled, people-view camera and a fixed, room-view camera. When no one is speaking, the apparatus shows the room view to the far-end. When there is a dominant speaker in the room, the apparatus directs the people-view camera at the dominant speaker and switches from the room-view camera to the people-view camera. When there is a new speaker in the room, the apparatus switches to the room-view camera first, directs the people-view camera at the new speaker, and then switches to the people-view camera directed at the new speaker. When there are two near-end speakers engaged in a conversation, the apparatus tracks and zooms-in the people-view camera so that both speakers are in view.

摘要翻译： 视频会议设备自动跟踪房间中的扬声器，并在受控的人民摄像机和固定的室内摄像机之间动态切换。 当没有人在说话的时候，设备会显示到远端的房间视图。 当房间中有主导扬声器时，设备将人物摄像机引导到主扬声器，并从室内摄像机切换到人民摄像机。 当房间里有一个新的扬声器时，设备首先切换到室内摄像机，将人物摄像机引导到新的扬声器，然后切换到指向新扬声器的人物摄像机。 当有两个近端扬声器进行通话时，该设备将跟踪和放大人民摄像机，以便两个扬声器都在视野中。

公开(公告)号：US08170200B1

公开(公告)日：2012-05-01

申请号：US11684689

申请日：2007-03-12

申请人： Peter Chu ,  Jinwei Feng

发明人： Peter Chu ,  Jinwei Feng

IPC分类号： H04M9/08

CPC分类号： H04M9/082

摘要： A conferencing unit reduces or eliminates percussive noise in audio that it outputs to a far-end. The unit filters near-end audio into a plurality of bands and calculates instantaneous energies for each band. The energies in first and second ranges of the bands are summed, and a difference between the two sums is compared to a threshold value to determine whether speech is present in the near-end audio received. The first range is preferably a mid-band range of frequencies of 300 to 600-Hz, while the second range is preferably an outer-band range of 100-Hz to 300-Hz and 600-Hz to 14-kHz. Based on the determination, the conferencing unit adjusts an output level of the near-end audio to reduce or eliminate any percussive noise in output audio while there is not a substantial amount of speech in the near-end audio.

摘要翻译： 会议单元减少或消除音频中的冲击噪声，从而将其输出到远端。 该单元将近端音频滤波成多个频带并计算每个频带的瞬时能量。 将频带的第一和第二范围的能量相加，并将两个和之间的差与阈值进行比较，以确定是否存在接收的近端音频中的语音。 第一范围优选为300至600Hz的中频带范围，而第二范围优选为100Hz至300Hz和600Hz至14kHz的外频带范围。 基于该确定，会议单元调整近端音频的输出电平以减少或消除输出音频中的任何冲击噪声，而近端音频中没有大量语音。

公开(公告)号：US20120064080A1

公开(公告)日：2012-03-15

申请号：US13070468

申请日：2011-03-23

申请人： Peter CHU ,  Mark Daniels ,  Robert Peach ,  Karen McLachlan ,  Jaeho Jung ,  Scott Glaser

发明人： Peter CHU ,  Mark Daniels ,  Robert Peach ,  Karen McLachlan ,  Jaeho Jung ,  Scott Glaser

IPC分类号： A61K39/395 ,  C07K14/00 ,  A61P35/00 ,  C07K16/00 ,  A61P37/02 ,  C07H21/04 ,  C12N5/071

CPC分类号： C07K16/28 ,  C07K14/705

摘要： The present invention is directed to human Ly6-BIG molecules and their use in diagnostic, prognostic, and treatment methods for colon, lung and other cancers, in preventing the reoccurrence of such cancers, and in diagnostic, prognostic, and treatment methods for autoimmune disorders and AIDS.

摘要翻译： 本发明涉及人Ly6-BIG分子及其在结肠癌，肺癌和其他癌症的诊断，预后和治疗方法中的用途，用于预防这种癌症的复发，以及用于自身免疫疾病的诊断，预后和治疗方法 和艾滋病。

公开(公告)号：US20110285809A1

公开(公告)日：2011-11-24

申请号：US12782155

申请日：2010-05-18

申请人： Jinwei FENG ,  Peter CHU ,  Wayne DUNLAP ,  Jonathan GALLMEIER ,  Alain NIMRI ,  Stephen P. SCHAEFER

发明人： Jinwei FENG ,  Peter CHU ,  Wayne DUNLAP ,  Jonathan GALLMEIER ,  Alain NIMRI ,  Stephen P. SCHAEFER

IPC分类号： H04N7/15

CPC分类号： H04N7/142 ,  G06K9/00234 ,  G10L25/78 ,  H04N5/232

摘要： A videoconferencing apparatus automatically tracks speakers in a room and dynamically switches between a controlled, people-view camera and a fixed, room-view camera. When no one is speaking, the apparatus shows the room view to the far-end. When there is a dominant speaker in the room, the apparatus directs the people-view camera at the dominant speaker and switches from the room-view camera to the people-view camera. When there is a new speaker in the room, the apparatus switches to the room-view camera first, directs the people-view camera at the new speaker, and then switches to the people-view camera directed at the new speaker. When there are two near-end speakers engaged in a conversation, the apparatus tracks and zooms-in the people-view camera so that both speakers are in view.

摘要翻译： 视频会议设备自动跟踪房间中的扬声器，并在受控的人民摄像机和固定的室内摄像机之间动态切换。 当没有人在说话的时候，设备会显示到远端的房间视图。 当房间中有主导扬声器时，设备将人物摄像机引导到主扬声器，并从室内摄像机切换到人民摄像机。 当房间里有一个新的扬声器时，设备首先切换到室内摄像机，将人物摄像机引导到新的扬声器，然后切换到指向新扬声器的人物摄像机。 当有两个近端扬声器进行通话时，该设备将跟踪和放大人民摄像机，以便两个扬声器都在视野中。