公开(公告)号：US07742318B2

公开(公告)日：2010-06-22

申请号：US12136413

申请日：2008-06-10

申请人： Dianbo Fu ,  Fred C. Lee ,  Ya Liu ,  Ming Xu

发明人： Dianbo Fu ,  Fred C. Lee ,  Ya Liu ,  Ming Xu

IPC分类号： H02M3/335

CPC分类号： H02M3/3376 ,  H02M3/33592 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491 ,  Y02P80/112

摘要： A resonant switched power converter having switching frequency controlled in response to an output voltage thereof achieves over-current protection such as at start-up or under short circuit conditions using a resonant tank circuit which provides a notch filter in addition to a band pass filter. A additional band pass filter provided in the resonant tank circuit achieves increased power transfer to a load and reduced circulating resonant currents and conduction losses. The inductances of the preferred LCLCL tank circuit or other tank circuit with two pass band filters and a notch filter may be integrated into a single electrical component.

摘要翻译： 具有响应于其输出电压控制的开关频率的谐振开关功率转换器，例如在使用提供除带通滤波器之外的陷波滤波器的谐振回路的启动或短路条件下实现过电流保护。 设置在谐振回路中的附加带通滤波器实现了对负载的功率传递增加，循环谐振电流和传导损耗的降低。 具有两个通带滤波器和陷波滤波器的优选LCLCL振荡电路或其它振荡电路的电感可以集成到单个电气部件中。

公开(公告)号：US20090303753A1

公开(公告)日：2009-12-10

申请号：US12136413

申请日：2008-06-10

申请人： Dianbo Fu ,  Fred C. Lee ,  Ya Liu ,  Ming Xu

发明人： Dianbo Fu ,  Fred C. Lee ,  Ya Liu ,  Ming Xu

IPC分类号： H02M3/335

CPC分类号： H02M3/3376 ,  H02M3/33592 ,  H02M2001/0058 ,  Y02B70/1433 ,  Y02B70/1475 ,  Y02B70/1491 ,  Y02P80/112

摘要： A resonant switched power converter having switching frequency controlled in response to an output voltage thereof achieves over-current protection such as at start-up or under short circuit conditions using a resonant tank circuit which provides a notch filter in addition to a band pass filter. A additional band pass filter provided in the resonant tank circuit achieves increased power transfer to a load and reduced circulating resonant currents and conduction losses. The inductances of the preferred LCLCL tank circuit or other tank circuit with two pass band filters and a notch filter may be integrated into a single electrical component.

摘要翻译： 具有响应于其输出电压控制的开关频率的谐振开关功率转换器，例如在使用提供除带通滤波器之外的陷波滤波器的谐振回路的启动或短路条件下实现过电流保护。 设置在谐振回路中的附加带通滤波器实现了对负载的功率传递增加，循环谐振电流和传导损耗的降低。 具有两个通带滤波器和陷波滤波器的优选LCLCL振荡电路或其它振荡电路的电感可以集成到单个电气部件中。

公开(公告)号：US20090206804A1

公开(公告)日：2009-08-20

申请号：US12034229

申请日：2008-02-20

申请人： Ming Xu ,  Julu Sun ,  Ya Liu ,  Fred C. Lee

发明人： Ming Xu ,  Julu Sun ,  Ya Liu ,  Fred C. Lee

IPC分类号： G05F1/10

CPC分类号： H02M3/1584 ,  H02M2001/0074 ,  Y02B70/1425 ,  Y10T307/685

摘要： Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected in series wherein regulated and unregulated branches each provide a substantially fixed and constant proportion of the output current. The series connection of input power sources may provide a further feedback mechanism in addition to feedback for regulation which enhances overall performance. As a perfecting feature of the invention, inductor-less resonant converters which are switched in an interleaved fashion may be used in the unregulated branch while substantially cancelling the characteristic large output voltage ripple thereof.

摘要翻译： 改进的调节和瞬态响应由电源架构提供，其提供并联的不稳压和稳压电压转换器，但是从串联连接的单独电源导出输入功率，其中调节和未调节的分支各自提供基本上固定的和恒定的输出电流比例。 输入电源的串联连接可以提供进一步的反馈机制，以及增强整体性能的调节反馈。 作为本发明的完善特征，可以在非调节支路中使用以交错方式切换的无电感谐振转换器，同时基本上消除其特征性的大输出电压纹波。

公开(公告)号：US07872886B2

公开(公告)日：2011-01-18

申请号：US12034229

申请日：2008-02-20

申请人： Ming Xu ,  Julu Sun ,  Ya Liu ,  Fred C. Lee

发明人： Ming Xu ,  Julu Sun ,  Ya Liu ,  Fred C. Lee

IPC分类号： H02M7/00

CPC分类号： H02M3/1584 ,  H02M2001/0074 ,  Y02B70/1425 ,  Y10T307/685

摘要： Improved regulation and transient response are provided by a power supply architecture providing both unregulated and regulated voltage converters in parallel but deriving input power from separate power supplies connected in series wherein regulated and unregulated branches each provide a substantially fixed and constant proportion of the output current. The series connection of input power sources may provide a further feedback mechanism in addition to feedback for regulation which enhances overall performance. As a perfecting feature of the invention, inductor-less resonant converters which are switched in an interleaved fashion may be used in the unregulated branch while substantially cancelling the characteristic large output voltage ripple thereof.

摘要翻译： 改进的调节和瞬态响应由电源架构提供，其提供并联的不稳压和稳压电压转换器，但是从串联连接的单独电源导出输入功率，其中调节和未调节的分支各自提供基本上固定的和恒定的输出电流比例。 输入电源的串联连接可以提供进一步的反馈机制，以及增强整体性能的调节反馈。 作为本发明的完善特征，可以在非调节支路中使用以交错方式切换的无电感谐振转换器，同时基本上消除其特征性的大输出电压纹波。

公开(公告)号：US08280059B2

公开(公告)日：2012-10-02

申请号：US12603920

申请日：2009-10-22

申请人： Chunxiang Xu ,  Huan Zhong ,  Ya Liu

发明人： Chunxiang Xu ,  Huan Zhong ,  Ya Liu

IPC分类号： H04K1/00 ,  H04L9/00 ,  H04L9/08 ,  H04L9/28 ,  H04L29/06 ,  H04L9/32

CPC分类号： H04L9/0841 ,  H04L9/0833

摘要： A method for generating a group key are provided in the field of network communications. The method includes the following steps: Group members select DH secret values and generate DH public values. An organizer generates an intermediate message and broadcasts a DH public value and the intermediate message. The group members generate a group key according to a DH secret value selected by the organizer and DH public values of the other group members except the organizer. A system for generating a group key and communication devices are also disclosed in the present invention.

摘要翻译： 在网络通信领域中提供了用于生成组密钥的方法。 该方法包括以下步骤：组成员选择DH秘密值并生成DH公共值。 组织者生成中间消息并广播DH公共值和中间消息。 小组成员根据组织者选择的DH秘密值和组织者以外的其他组成员的DH公共价值生成组密钥。 本发明还公开了一种用于生成组密钥和通信设备的系统。

公开(公告)号：US20120298364A1

公开(公告)日：2012-11-29

申请号：US13574721

申请日：2011-04-08

申请人： Ganlu Liu ,  Yiqun Zhang ,  Ya Liu ,  Bo Chen ,  Tao Ke ,  Chengxing Chong

发明人： Ganlu Liu ,  Yiqun Zhang ,  Ya Liu ,  Bo Chen ,  Tao Ke ,  Chengxing Chong

IPC分类号： E21B43/12 ,  E21B43/263

CPC分类号： E21B33/138

摘要： A multi-phase down hole injector related to a down hole tool for oilfield well drilling, has a shooting pipe, an axial hole disposed in the center of the shooting pipe, one end of the shooting pipe is connected to an ellipsoid guide, at least two housing seats sets are disposed along the shooting pipe, every housing seat set are disposed with at least two housing seats of radial symmetry, the inner ends of every housing seat is separately connected to the axial hole, every housing seat is disposed with a injection barrel by the base, and the explosive cavity is disposed between the base and the housing seat. The injected viscosity fluid can exert squeezing and shearing force to the rock to make the channel and breach smaller or eliminated.

摘要翻译： 与油井钻井用的井下工具相关的多相井下喷射器具有投射管，设置在射出管的中心的轴向孔，射流管的一端至少连接到椭圆形引导件 沿着射击管设置两个外壳座组，每个外壳座组具有至少两个径向对称的壳体座，每个壳体座的内端分别连接到轴向孔，每个壳体座设有一个注射 并且所述爆炸腔设置在所述基座和所述壳体座之间。 注入的粘度流体可以对岩石施加挤压和剪切力，使通道更小或消除泄漏。

公开(公告)号：US08209532B2

公开(公告)日：2012-06-26

申请号：US12351548

申请日：2009-01-09

申请人： Ya Liu ,  Fuyou Miao

发明人： Ya Liu ,  Fuyou Miao

IPC分类号： H04L29/06

CPC分类号： H04L9/0833 ,  H04L9/0891

摘要： A system and method for implementing security of multi-party communication is disclosed in the disclosure. The system mainly includes a group key management unit and a record protocol unit. The method mainly includes when the system runs in the centralized group key management mode, the Group Controller and Key Server (GCKS) establishes and stores a Group Security Association, the GCKS negotiates with the group members to establish an Initiation Security Association, under the protection of the Initiation Security Association, the group members obtain the Group Security Association from GCKS. When the system runs in the distributed group key management mode, a Group Security Association is established by all the group members together at the beginning of the group communication. The system runs in the application process space and can provide an application program (or application protocol) with the function of the group key management and data security of the multi-party communication in the form of the standard Application Programming Interface (API).

摘要翻译： 本公开公开了一种用于实现多方通信的安全性的系统和方法。 该系统主要包括组密钥管理单元和记录协议单元。 该方法主要包括系统以集中式密钥管理模式运行时，集团控制器和密钥服务器（GCKS）建立并存储集团安全协会，GCKS与集团成员进行协商，建立起始安全关联， 的启动安全协会，集团成员从GCKS获得集团安全协会。 当系统以分布式组密钥管理模式运行时，群组安全关联在组通信开始时由所有组成员共同建立。 该系统在应用程序空间中运行，并可以以标准应用编程接口（API）的形式提供具有组密钥管理功能和多方通信数据安全性的应用程序（或应用协议）。

公开(公告)号：US20090271612A1

公开(公告)日：2009-10-29

申请号：US11917080

申请日：2007-05-24

申请人： Ya Liu

发明人： Ya Liu

IPC分类号： H04L9/32 ,  H04L29/06

CPC分类号： H04L9/0891 ,  H04L9/0833 ,  H04L63/065 ,  H04L63/166

摘要： A method for realizing multi-party communication security includes: performing identification authentication and negotiating to create an initiation session through running the transport layer security protocol or datagram transport layer security protocol by a Group Control and Keying Server and a group member device; distributing a group session and a rekeying session to the group member device through running a group key management sub-protocol on the Group Control and Keying Server and the group member devices; rekeying through running the group key management sub-protocol on the Group Control and Keying Server and the group member devices, when a rekeying event is detected by the Group Control and Keying Server. A relevant multi-party communication security system and a device are further provided in the present invention.

摘要翻译： 实现多方通信安全的方法包括：通过组控制和密钥服务器和组成员设备运行传输层安全协议或数据报传输层安全协议，执行识别认证和协商来创建启动会话; 通过在组控制和密钥服务器和组成员设备上运行组密钥管理子协议，将组会话和密钥会话分发到组成员设备; 当组控制和密钥服务器检测到密钥事件时，通过运行组控制和密钥服务器和组成员设备上的组密钥管理子协议进行密钥更新。 在本发明中进一步提供了相关的多方通信安全系统和设备。

公开(公告)号：US20090190764A1

公开(公告)日：2009-07-30

申请号：US12412174

申请日：2009-03-26

申请人： Ya Liu

发明人： Ya Liu

IPC分类号： H04L9/08

CPC分类号： H04L9/0833 ,  H04L9/3271

摘要： The present disclosure provides a method and system of key sharing, the method includes: transmitting, by a group member, a key information request to a neighbor group member; transmitting, by the neighbor group member, the requested key information to the group member, upon receiving the key information request. The system includes: a requester group member and a responder group member. With the method and system of the disclosure, it may improve the reliability and availability of group key and/or auxiliary key distribution, which avoids the bottleneck in service performance and network bandwidth that may occur when all the group members obtain the key from the key server.

摘要翻译： 本公开提供了一种密钥共享的方法和系统，所述方法包括：由组成员向邻居组成员发送密钥信息请求; 在接收到密钥信息请求时，由邻居组成员将所请求的密钥信息发送给组成员。 该系统包括：请求者组成员和响应者组成员。 通过本公开的方法和系统，可以提高组密钥和/或辅助密钥分发的可靠性和可用性，避免了所有组成员从密钥获取密钥时可能发生的业务性能和网络带宽的瓶颈 服务器。

公开(公告)号：US07012817B2

公开(公告)日：2006-03-14

申请号：US10776967

申请日：2004-02-10

申请人： Ya Liu ,  Daifu Xiong ,  Yi Jiang ,  Guichao Hua

发明人： Ya Liu ,  Daifu Xiong ,  Yi Jiang ,  Guichao Hua

IPC分类号： H02M3/335

CPC分类号： H02M1/34 ,  H02M3/33592 ,  H02M2001/342 ,  Y02B70/1475 ,  Y02B70/1491

摘要： A converter includes a transformer having a primary winding, a secondary winding and an auxiliary winding, a first switching device for connecting an input voltage to the primary winding of the transformer, an output circuit connected to the secondary winding, a controller, and an integrated active clamp and primary bias circuit. The integrated active clamp and primary bias circuit includes the auxiliary winding and a second switch providing a bias voltage to the controller to alternately operate the first and second switches between conductive and non-conductive states. When the first switch is conductive the second switch is nonconducting and power is transferred from the primary winding to the output circuit via the secondary winding and from the auxiliary winding to the controller. When the first switch is nonconducting, the second switch is conducting and the voltage across the primary winding is clamped.

摘要翻译： A转换器包括具有初级绕组，次级绕组和辅助绕组的变压器，用于将输入电压连接到变压器的初级绕组的第一开关装置，连接到次级绕组的输出电路，控制器和集成 有源钳位和初级偏置电路。 集成的有源钳位和初级偏置电路包括辅助绕组和向控制器提供偏置电压的第二开关，以在导通状态和非导通状态之间交替地操作第一和第二开关。 当第一开关导通时，第二开关是不导通的，并且功率通过次级绕组和辅助绕组从初级绕组传送到输出电路到控制器。 当第一开关不导通时，第二开关导通，钳位初级绕组两端的电压。