公开(公告)号：US20080231505A1

公开(公告)日：2008-09-25

申请号：US12051569

申请日：2008-03-19

申请人： Weiqing Zhu ,  Jun Hu ,  Xiaodong Liu ,  Zhiyu Liu ,  Feng Pan

发明人： Weiqing Zhu ,  Jun Hu ,  Xiaodong Liu ,  Zhiyu Liu ,  Feng Pan

IPC分类号： G01S3/00

CPC分类号： G01S3/74

摘要： The present invention provides a method of source number estimation based on eigenspace in DOA estimation, including: (1) obtaining signals received by uniform linear array; (2) calculating a covariance matrix according to the received signals; (3) calculating a complex-valued covariance matrix or a covariance matrix after real-valued computations; (4) conducting eigendecomposition to the covariance matrix to obtain its eigenvector matrix; (5) calculating a source number decision based on the eigenvector; (6) calculating a ratio; and (7) source number estimation. The present invention can accurately estimate source number and save huge amounts of computation during signal processing in DOA estimation, and lower the cost of hardware.

摘要翻译： 本发明提供了一种基于DOA估计中的本征空间的源数估计方法，包括：（1）获得均匀线性阵列接收的信号; （2）根据接收信号计算协方差矩阵; （3）在实值计算之后计算复值协方差矩阵或协方差矩阵; （4）对协方差矩阵进行特征分解，得到其特征向量矩阵; （5）基于特征向量计算源数量决定; （6）计算比率; 和（7）源数估计。 本发明可以在DOA估计中的信号处理期间准确地估计源数量并节省大量的计算量，降低硬件成本。

公开(公告)号：US07876264B2

公开(公告)日：2011-01-25

申请号：US12051569

申请日：2008-03-19

申请人： Weiqing Zhu ,  Jun Hu ,  Xiaodong Liu ,  Zhiyu Liu ,  Feng Pan

发明人： Weiqing Zhu ,  Jun Hu ,  Xiaodong Liu ,  Zhiyu Liu ,  Feng Pan

IPC分类号： G01S5/02 ,  G01S3/14

CPC分类号： G01S3/74

摘要： The present invention provides a method of source number estimation based on eigenspace in DOA estimation, including: (1) obtaining signals received by uniform linear array; (2) calculating a covariance matrix according to the received signals; (3) calculating a complex-valued covariance matrix or a covariance matrix after real-valued computations; (4) conducting eigendecomposition to the covariance matrix to obtain its eigenvector matrix; (5) calculating a source number decision based on the eigenvector; (6) calculating a ratio; and (7) source number estimation. The present invention can accurately estimate source number and save huge amounts of computation during signal processing in DOA estimation, and lower the cost of hardware.

摘要翻译： 本发明提供了一种基于DOA估计中的本征空间的源数估计方法，包括：（1）获得均匀线性阵列接收的信号; （2）根据接收信号计算协方差矩阵; （3）在实值计算之后计算复值协方差矩阵或协方差矩阵; （4）对协方差矩阵进行特征分解，得到其特征向量矩阵; （5）基于特征向量计算源数量决定; （6）计算比率; 和（7）源数估计。 本发明可以在DOA估计中的信号处理期间准确地估计源数量并节省大量的计算量，降低硬件成本。

公开(公告)号：US20110258305A1

公开(公告)日：2011-10-20

申请号：US13088394

申请日：2011-04-17

申请人： Wei Chen ,  Xiaopu Zhu ,  Zhiyu Liu ,  Pubing Zhang

发明人： Wei Chen ,  Xiaopu Zhu ,  Zhiyu Liu ,  Pubing Zhang

IPC分类号： G06F15/173

CPC分类号： H04L41/20 ,  H04L12/1813 ,  H04L51/04 ,  H04L67/02 ,  H04L67/142

摘要： A communication system and method include a server hosting an interactive voice response or self-help application in a Java virtual machine. In order to leverage the advantages and facilities of the Java servlet model, a Java XMPP (Extensible Messaging and Presence Protocol) servlet container is provided for the server so that the communication application can be programmed with objects defined by an XMPP servlet API, as well as objects defined by the standards-based Java EE platform such as HTTP and SIP servlets, in order to service an XMPP client. In addition to the generic class objects of the Java servlet model, the API also provides a set of XMPP-specific class objects. The Java XMPP servlet container includes a network point at a transport level for handling network connections, an XMPP service layer for managing XMPP sessions and streams, and an application layer for managing XMPP stanzas.

摘要翻译： 通信系统和方法包括在Java虚拟机中托管交互式语音响应或自助应用的服务器。 为了利用Java servlet模型的优点和功能，为服务器提供了Java XMPP（可扩展消息传递和存在协议）servlet容器，以便通信应用程序也可以使用XMPP servlet API定义的对象进行编程 作为由基于标准的Java EE平台（如HTTP和SIP servlet）定义的对象，以便为XMPP客户端提供服务。 除了Java servlet模型的通用类对象之外，API还提供了一组特定于XMPP的类对象。 Java XMPP servlet容器包含用于处理网络连接的传输级别的网络点，用于管理XMPP会话和流的XMPP服务层以及用于管理XMPP节的应用层。

公开(公告)号：US20070176642A1

公开(公告)日：2007-08-02

申请号：US11701061

申请日：2007-01-31

申请人： Volkan Kursun ,  Zhiyu Liu

发明人： Volkan Kursun ,  Zhiyu Liu

IPC分类号： H03K19/096

CPC分类号： H03K19/0966

摘要： Circuits are provided for simultaneously reducing the subthreshold and gate oxide leakage power consumption in domino logic circuits. Sleep transistors and a dual threshold voltage CMOS technology may be utilized to place idle domino logic circuits into a low leakage state. The circuits may significantly lower the total leakage power as compared to the standard dual threshold voltage domino logic circuits at both the high and low die temperatures. The energy overheads of the circuit techniques may be low, justifying the activation of the proposed sleep schemes by providing net savings in total power consumption during short idle periods.

摘要翻译： 提供了电路，用于同时减少多米诺逻辑电路中的亚阈值和栅极氧化物泄漏功耗。 可以利用睡眠晶体管和双阈值电压CMOS技术将空闲多米诺逻辑电路置于低泄漏状态。 与标准双阈值电压多米诺逻辑电路相比，在高温和低压模温度下，电路可以显着降低总漏电功率。 电路技术的能量开销可能很低，通过在短暂的空闲时段期间提供总的功耗的净节省来证明所提出的睡眠方案的激活。

公开(公告)号：US08612932B2

公开(公告)日：2013-12-17

申请号：US13088396

申请日：2011-04-17

申请人： Wei Chen ,  Zhiyu Liu ,  Xiaopu Zhu ,  Jose Maria de Castro, Jr.

发明人： Wei Chen ,  Zhiyu Liu ,  Xiaopu Zhu ,  Jose Maria de Castro, Jr.

IPC分类号： G06F9/44

CPC分类号： G06F8/20 ,  H04L65/1006

摘要： A communication system and method include a server hosting an interactive voice response or self-help application in a Java virtual machine. The communication application is programmed with a unified communication API, which is provided by a unified application framework. The API provides a set of unified class objects for call control and media control. The unified class objects are constructed from class object primitives of individual standards-based Java call control API and media control API. The constructs are a structured and restricted set conforming to the object model of the application and its states. The API has a unified event handler for both call and media controls and dispatches events to the application based on the type of event and the application state of the object model.

摘要翻译： 通信系统和方法包括在Java虚拟机中托管交互式语音响应或自助应用的服务器。 通信应用程序由统一的通信API编程，由统一的应用程序框架提供。 API提供了一组用于呼叫控制和媒体控制的统一类对象。 统一的类对象由单个基于标准的Java调用控制API和媒体控制API的类对象基元构成。 构造是符合应用程序的对象模型及其状态的结构化和受限制的集合。 API具有统一的事件处理程序，用于呼叫和媒体控件，并根据事件类型和对象模型的应用程序状态将事件分派给应用程序。

公开(公告)号：US20090218994A1

公开(公告)日：2009-09-03

申请号：US12087278

申请日：2006-12-29

申请人： Zhiyu Liu ,  Chunhui Zhu ,  Haizhou Zhao

发明人： Zhiyu Liu ,  Chunhui Zhu ,  Haizhou Zhao

IPC分类号： G05F1/10

CPC分类号： H02M3/337 ,  H02M1/4241 ,  H02M3/3376 ,  H02M2001/0058 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02B70/1491

摘要： The present invention refers to a method for controlling a resonance DC/DC converter, which adjusts an output voltage by changing a turn-on frequency of input switch devices of a resonance circuit of the converter, and extends the range of the output voltage of the resonance circuit by adjusting the duty ratio of the switch devices based on the feedback signal of the load circuit. The present invention also provides the resonance DC/DC converter structure using the controlling method. The advantage of the present invention lies in the use of two modes of frequency modulation and frequency modulation plus pulse width modulation to control the resonance DC/DC converter; the use of the frequency modulation controlling mode when the operating frequency of the power supply is low, and introducing the frequency modulation plus pulse width modulation controlling mode when the operating frequency of the power supply is too high. As a result, the problem of the resonance converter, that is, the high operating frequency and the big loss of the circuit when the circuit operates at a light load and non-load, can be solved, and thus the regulation ability for the output voltage of the resonance circuit is enormously improved, and the output range of the voltage is effectively expanded.

摘要翻译： 本发明涉及一种用于控制谐振DC / DC转换器的方法，该谐振DC / DC转换器通过改变转换器的谐振电路的输入开关器件的接通频率来调节输出电压，并且扩展了输出电压的范围 通过根据负载电路的反馈信号调整开关装置的占空比来进行谐振电路。 本发明还提供使用该控制方法的谐振DC / DC转换器结构。 本发明的优点在于使用两种调制方式和频率调制加脉冲宽度调制来控制谐振DC / DC转换器; 当电源的工作频率低时使用频率调制控制模式，并且当电源的工作频率太高时引入频率调制加脉冲宽度调制控制模式。 结果，可以解决谐振转换器的问题，即当电路在轻负载和无负载下工作时，高工作频率和电路的大损耗，因此可以解决输出的调节能力 大大提高了谐振电路的电压，有效地扩大了电压的输出范围。

公开(公告)号：US09215079B2

公开(公告)日：2015-12-15

申请号：US13088394

申请日：2011-04-17

申请人： Wei Chen ,  Xiaopu Zhu ,  Zhiyu Liu ,  Pubing Zhang

发明人： Wei Chen ,  Xiaopu Zhu ,  Zhiyu Liu ,  Pubing Zhang

IPC分类号： G06F15/173 ,  H04L12/18 ,  H04L12/58 ,  H04L29/08

CPC分类号： H04L41/20 ,  H04L12/1813 ,  H04L51/04 ,  H04L67/02 ,  H04L67/142

摘要： A communication system and method include a server hosting an interactive voice response or self-help application in a Java virtual machine. In order to leverage the advantages and facilities of the Java servlet model, a Java XMPP (Extensible Messaging and Presence Protocol) servlet container is provided for the server so that the communication application can be programmed with objects defined by an XMPP servlet API, as well as objects defined by the standards-based Java EE platform such as HTTP and SIP servlets, in order to service an XMPP client. In addition to the generic class objects of the Java servlet model, the API also provides a set of XMPP-specific class objects. The Java XMPP servlet container includes a network point at a transport level for handling network connections, an XMPP service layer for managing XMPP sessions and streams, and an application layer for managing XMPP stanzas.

摘要翻译： 通信系统和方法包括在Java虚拟机中托管交互式语音响应或自助应用的服务器。 为了利用Java servlet模型的优点和功能，为服务器提供了Java XMPP（可扩展消息传递和存在协议）servlet容器，以便通信应用程序也可以使用XMPP servlet API定义的对象进行编程 作为由基于标准的Java EE平台（如HTTP和SIP servlet）定义的对象，以便为XMPP客户端提供服务。 除了Java servlet模型的通用类对象之外，API还提供了一组特定于XMPP的类对象。 Java XMPP servlet容器包含用于处理网络连接的传输级别的网络点，用于管理XMPP会话和流的XMPP服务层以及用于管理XMPP节的应用层。

公开(公告)号：US20110258597A1

公开(公告)日：2011-10-20

申请号：US13088396

申请日：2011-04-17

申请人： Wei Chen ,  Zhiyu Liu ,  Xiaopu Zhu ,  Jose Maria de Castro, JR.

发明人： Wei Chen ,  Zhiyu Liu ,  Xiaopu Zhu ,  Jose Maria de Castro, JR.

IPC分类号： G06F9/44 ,  G06F9/445

CPC分类号： G06F8/20 ,  H04L65/1006

摘要： A communication system and method include a server hosting an interactive voice response or self-help application in a Java virtual machine. The communication application is programmed with a unified communication API, which is provided by a unified application framework. The API provides a set of unified class objects for call control and media control. The unified class objects are constructed from class object primitives of individual standards-based Java call control API and media control API. The constructs are a structured and restricted set conforming to the object model of the application and its states. The API has a unified event handler for both call and media controls and dispatches events to the application based on the type of event and the application state of the object model.

摘要翻译： 通信系统和方法包括在Java虚拟机中托管交互式语音响应或自助应用的服务器。 通信应用程序由统一的通信API编程，由统一的应用程序框架提供。 API提供了一组用于呼叫控制和媒体控制的统一类对象。 统一的类对象由单个基于标准的Java调用控制API和媒体控制API的类对象基元构成。 构造是符合应用程序的对象模型及其状态的结构化和受限制的集合。 API具有统一的事件处理程序，用于呼叫和媒体控件，并根据事件类型和对象模型的应用程序状态将事件分派给应用程序。

公开(公告)号：US08406014B2

公开(公告)日：2013-03-26

申请号：US12087278

申请日：2006-12-29

申请人： Zhiyu Liu ,  Chunhui Zhu ,  Haizhou Zhao

发明人： Zhiyu Liu ,  Chunhui Zhu ,  Haizhou Zhao

IPC分类号： H02M3/335

CPC分类号： H02M3/337 ,  H02M1/4241 ,  H02M3/3376 ,  H02M2001/0058 ,  Y02B70/126 ,  Y02B70/1433 ,  Y02B70/1491

摘要： A method and circuit for controlling a resonant DC/DC converter which adjusts an output voltage by changing a turn-on frequency of input switch devices of a resonant circuit of the converter. The method extends the range of the output voltage of the resonant circuit by adjusting the duty ratio of the switch devices based on the feedback signal of the load circuit. The method and circuit uses two modes to control resonance of the DC/DC converter-frequency modulation and frequency modulation plus pulse width modulation. Frequency modulation is used when the operating frequency of the power supply is low. Frequency modulation plus pulse width modulation is used when the operating frequency of the power supply is too high.

摘要翻译： 一种用于控制谐振DC / DC转换器的方法和电路，其通过改变转换器的谐振电路的输入开关装置的接通频率来调节输出电压。 该方法通过基于负载电路的反馈信号调整开关器件的占空比来扩展谐振电路的输出电压的范围。 该方法和电路使用两种模式来控制DC / DC转换器的频率调制和频率调制加脉冲宽度调制的谐振。 当电源的工作频率低时，使用频率调制。 当电源的工作频率太高时，使用频率调制加脉宽调制。

公开(公告)号：US07764087B2

公开(公告)日：2010-07-27

申请号：US11701194

申请日：2007-01-31

申请人： Volkan Kursun ,  Zhiyu Liu

发明人： Volkan Kursun ,  Zhiyu Liu

IPC分类号： H03K19/096

CPC分类号： H03K19/0966

摘要： Low voltage swing techniques are provided for simultaneously reducing the active and standby mode power consumption and enhancing the noise immunity in domino logic circuits. One or both the upper and lower boundaries of the voltage swing at the dynamic node may be different from the upper and lower boundaries of the voltage swing at the output node. Further, the domino logic circuit may use dual Vt thereby reducing the short-circuit current during operation. Meanwhile, full voltage swing signals may be maintained at the inputs and outputs for high speed operation. The low swing circuit techniques are provided that modify the output voltage swing of a domino gate, thereby reducing the active mode power consumption.

摘要翻译： 提供了低电压摆动技术，用于同时降低主动和待机模式功耗，并提高多米诺逻辑电路中的抗噪声能力。 在动态节点处的电压摆动的上边界和下边界中的一个或两个可以不同于输出节点处的电压摆幅的上边界和下边界。 此外，多米诺骨牌逻辑电路可以使用双Vt，从而在操作期间减少短路电流。 同时，可以在输入和输出端保持全电压摆幅信号，以实现高速运行。 提供了低摆动电路技术，其修改多米诺骨门的输出电压摆幅，从而降低主动模式功耗。