Huaguo
Huaguo Chen, Hunan CN
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20110110413 | SPACE VECTOR BASED SYNCHRONOUS MODULATING METHOD AND SYSTEM - A space vector based synchronous modulating method includes sampling a frequency f of a reference voltage vector; checking a relational table of frequencies and carrier wave ratios by the frequency f so as to obtain a carrier wave ratio N; obtaining a passing angle Δθ of the reference voltage vector by Δθ=2π/N; obtaining a modulating angle θm of the reference voltage vector by θm=(Nth−1)×Δθ, in which Nth indicates which time of sampling; obtaining a modulating ratio m according to a modulating ratio-frequency curve; accounting and synthesizing an output angle of three basic voltage vectors of the reference voltage vector according to the modulating angle θm and the passing angle Δθ of the reference voltage vector and the modulating ratio m; comparing a variable quantity θf the reference voltage vector angle θ and the output angle of three basic voltage vectors, and outputting corresponding basic voltage vectors according to the comparing result; synthesizing an output voltage in accordance with the reference voltage vector by the basic voltage vectors. | 05-12-2011 |
Huaguo Shi, Beijing CN
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20140242945 | METHOD AND SYSTEM FOR MONITORING APPLICATION PROGRAM OF MOBILE DEVICE - The present disclosure provides a method and system for monitoring an application. The method comprises creating a simulated system service; establishing a connection with a function in a device driver that manages an Input/Output (I/O) channel of the device; intercepting data transmitted from the application to the function in the device driver that manages the I/O channel of the device; replacing, based on the intercepted data, a system service requested by the application with a corresponding simulated system service; and recording a request received by the simulated system service and forwarding the request to an analysis module for analysis. The present disclosure is advantageous in that the system request is intercepted during the Binder communication process of the system and the simulated system layer service is used for analyzing the behavior features of the application in the Android operating system. In contrast to other application blocking techniques, the method and system according to the present disclosure do not disturb the normal operation of the application. | 08-28-2014 |
Huaguo Xie, Shenzhen CN
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20130083799 | TCP PROXY INSERTION AND UNINSTALL METHOD, AND SERVICE GATEWAY DEVICE - A TCP proxy insertion and uninstall method is provided, including: during establishment of a TCP connection, forwarding a TCP connection establishing packet between a TCP client and a TCP server through an L3, and recording option information and sequence number information of the TCP connection establishing packet; performing determination on a packet according to a proxy policy; forwarding the received packet if it is determined that no proxy process is required for the packet, and updating the recorded sequence number information according to sequence number information of the received packet; and generating a client pseudo socket and a server pseudo socket according to the option information and sequence number information if it is determined that a proxy process is required for the packet, terminating the received packet by adopting the client pseudo socket and server pseudo socket, processing the terminated packet through an L7 and forwarding the processed packet. | 04-04-2013 |
20140211780 | Clock Synchronization Method and Device - Embodiments of the present invention provide a clock synchronization method and device. The method includes: receiving, a preconfigured multi-protocol label switching (MPLS) capability parameter and a traffic engineering (TE) capability parameter, and establishing, based on the MPLS capability parameter and the TE capability parameter, an MPLS tunnel interface; establishing, an MPLS TE tunnel whose bidirectional paths are consistent between the first clock synchronization device and a second clock synchronization device; and performing, clock synchronization message interaction with the second clock synchronization device through the established MPLS TE tunnel. In the embodiments of the present invention, by establishing the MPLS TE tunnel whose bidirectional paths are consistent between the first clock synchronization device and the second clock synchronization device which perform clock synchronization message interaction, symmetry of clock synchronization message interaction paths is ensured, and therefore, a time error in clock synchronization resulting from asymmetry of the paths is avoided. | 07-31-2014 |