Patents by Inventor Xiaoming Zhu

Xiaoming Zhu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20200007507
    Abstract: This application discloses an Internet Protocol Security tunnel maintenance method, apparatus, and system. A terminal device negotiates with a VPN gateway based on a first IP address and according to the IKE protocol, and establishing an IPsec tunnel based on SAs obtained through negotiation; determines, the first IP address changes to a second IP address; sends a first request packet to the VPN gateway, where the first request packet carries the second IP address and a first tunnel identifier, the first request packet is used to request to update a first SA record, and the first SA record includes a correspondence between the SAs, the first IP address, and the first tunnel identifier; generates a second tunnel identifier based on the second IP address and a predefined algorithm; and replaces the first tunnel identifier in a second SA record with the second tunnel identifier.
    Type: Application
    Filed: September 9, 2019
    Publication date: January 2, 2020
    Inventors: Xiaoming Zhu, Wenxin Bai, Jin Kong
  • Patent number: 10302592
    Abstract: A device for measuring size distributions of particles and droplets includes a gel electrophoresis component that has a gel chamber that is suitable to receive a gel in which at least one of particles or droplets propagate in a liquid medium during operation; an illumination source arranged to illuminate said at least one of particles or droplets such that the at least one of particles or droplets absorbs, scatters or emits light; an imaging device configured to obtain image data from the absorbed, scattered, or emitted light from the at least one of particles or droplets while the at least one of particles or droplets propagate through the gel; and a computing device configured to receive and process the image data to provide information concerning a size distribution of the at least one of particles or droplets.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: May 28, 2019
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Thomas G. Mason, Xiaoming Zhu
  • Patent number: 9681484
    Abstract: A networking method for mobile terminals is provided, including: dividing a frequency spectrum resource suitable for operation in a mobile communication network into three kinds of frequency bands which are a CB, a LB, and a UB; and establishing, by a calling mobile terminal, a radio communication connection with a called mobile terminal on the CB or the LB or the UB; wherein the calling mobile terminal and the called mobile terminal are implemented by an SDR way. The present disclosure also discloses a mobile terminal. Accordingly, not only a utilization rate of a frequency spectrum resource and a resource usage rate of a base station are improved, a coverage range of the mobile communication network is expanded, but also mobile terminal user experience is improved.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: June 13, 2017
    Assignee: Sanechips Technology Co., Ltd.
    Inventors: Zhiwei Mo, Ning Chen, Xiaoming Zhu
  • Patent number: 9424220
    Abstract: A method for setting a working mode of a multi-processor system includes: detecting, after a current board is inserted into a slot of the backplane, whether an associated board exists on the backplane; detecting, if the associated board exists, whether the associated board is in an independent working state; powering on the current board according to a slave working mode if the associated board is not in an independent working state, so as to work coordinately with the associated board; detecting, within a predetermined detection time if the associated board does not exist, whether a board is inserted into another slot of the backplane except the slot of the master board; and powering on the current board according to a master working mode if it is detected that the board is inserted, so as to work coordinately with the board in the other slot.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: August 23, 2016
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Xiaoming Zhu, Guanghui Liu, Yansong Li
  • Publication number: 20160123924
    Abstract: A device for measuring size distributions of particles and droplets includes a gel electrophoresis component that has a gel chamber that is suitable to receive a gel in which at least one of particles or droplets propagate in a liquid medium during operation; an illumination source arranged to illuminate said at least one of particles or droplets such that the at least one of particles or droplets absorbs, scatters or emits light; an imaging device configured to obtain image data from the absorbed, scattered, or emitted light from the at least one of particles or droplets while the at least one of particles or droplets propagate through the gel; and a computing device configured to receive and process the image data to provide information concerning a size distribution of the at least one of particles or droplets.
    Type: Application
    Filed: June 13, 2014
    Publication date: May 5, 2016
    Inventors: Thomas G. Mason, Xiaoming Zhu
  • Publication number: 20150359027
    Abstract: A networking method for mobile terminals is provided, including: dividing a frequency spectrum resource suitable for operation in a mobile communication network into three kinds of frequency bands which are a CB, a LB, and a UB; and establishing, by a calling mobile terminal, a radio communication connection with a called mobile terminal on the CB or the LB or the UB; wherein the calling mobile terminal and the called mobile terminal are implemented by an SDR way. The present disclosure also discloses a mobile terminal. Accordingly, not only a utilization rate of a frequency spectrum resource and a resource usage rate of a base station are improved, a coverage range of the mobile communication network is expanded, but also mobile terminal user experience is improved.
    Type: Application
    Filed: August 29, 2013
    Publication date: December 10, 2015
    Inventors: Zhiwei MO, Ning CHEN, Xiaoming ZHU
  • Publication number: 20150039799
    Abstract: A method for setting a working mode of a multi-processor system includes: detecting, after a current board is inserted into a slot of the backplane, whether an associated board exists on the backplane; detecting, if the associated board exists, whether the associated board is in an independent working state; powering on the current board according to a slave working mode if the associated board is not in an independent working state, so as to work coordinately with the associated board; detecting, within a predetermined detection time if the associated board does not exist, whether a board is inserted into another slot of the backplane except the slot of the master board; and powering on the current board according to a master working mode if it is detected that the board is inserted, so as to work coordinately with the board in the other slot.
    Type: Application
    Filed: October 21, 2014
    Publication date: February 5, 2015
    Inventors: Xiaoming Zhu, Guanghui Liu, Yansong Li
  • Patent number: 8738797
    Abstract: A method and apparatus for rate matching are disclosed by the invention, wherein the method includes: determining an initial value according to the total amount of data in the data stream and a predetermined initial offset value; performing an accumulation processing and an even distribution processing on said initial value and the amount of the data needing rate matching; determining the data needing rate matching from the data stream according to the processing result. With the solution proposed by the invention, a rate matching method using even distribution principle and accumulation principle can be determined. The method is simple, clear and accurate, and can be understood easily.
    Type: Grant
    Filed: August 20, 2009
    Date of Patent: May 27, 2014
    Assignee: ZTE Corporation
    Inventors: Fanping Du, Xiaoming Zhu, Jianping Tao
  • Patent number: 8694808
    Abstract: A power supply system includes a PWM power supply connected to and supplying power to a power-consuming unit and a power supply protocol management apparatus connected to the power-consuming unit through a transmission bus for acquiring a VID protocol of the power-consuming unit and acquiring a VID code conversion table matching the VID protocol. The power supply protocol management apparatus converts a VID code output by the power-consuming unit (on the basis of the VID protocol) into a required voltage of the power-consuming unit according to the VID code conversion table, compares the required voltage with a voltage at an output end of the PWM power supply to generate a feedback voltage value, and transmits the generated feedback voltage value to the PWM power supply which adjusts its output voltage according to the feedback voltage value.
    Type: Grant
    Filed: June 27, 2013
    Date of Patent: April 8, 2014
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Xiaoming Zhu
  • Publication number: 20130290748
    Abstract: A power supply system includes a PWM power supply connected to and supplying power to a power-consuming unit and a power supply protocol management apparatus connected to the power-consuming unit through a transmission bus for acquiring a VID protocol of the power-consuming unit and acquiring a VID code conversion table matching the VID protocol. The power supply protocol management apparatus converts a VID code output by the power-consuming unit (on the basis of the VID protocol) into a required voltage of the power-consuming unit according to the VID code conversion table, compares the required voltage with a voltage at an output end of the PWM power supply to generate a feedback voltage value, and transmits the generated feedback voltage value to the PWM power supply which adjusts its output voltage according to the feedback voltage value.
    Type: Application
    Filed: June 27, 2013
    Publication date: October 31, 2013
    Inventor: Xiaoming Zhu
  • Patent number: 8139542
    Abstract: Cell timing is detected by first trying to detect a target handover cell through detecting a primary synchronization channel (P-SCH) followed by a common pilot channel (CPICH). If that fails, N number of retrials is performed using a full-window search on the CPICH. The full-window CPICH search is performed blindly, without any slot timing information from the P-SCH. Performance is improved while maintaining the benefits of faster acquisition methods in good channel conditions. The full-window search is more time consuming, but takes advantage of the stronger CPICH transmission. In good channel conditions, a mobile device can proceed quickly with the normal method of timing acquisition. With failure, the mobile device can switch to the longer search which has a higher probability of successfully completing the hard handover procedure. The overall effect is a higher success rate of hard handovers without a uniform increase of time spent in cell timing acquisition.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: March 20, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Brian Dong, Messay Amerga, Supratik Bhattacharjee, Xiaoming Zhu
  • Patent number: 8098780
    Abstract: A rake receiver finger assignor is configured to assign a rake receiver finger to a time offset between identified signal path time offsets in accordance with a concentration of identified signal paths from a transmitter to a rake receiver. In accordance with the exemplary embodiment, a number of identified signal paths having time offsets within a time window are observed to determine the concentration of signal paths identified by a path searcher. If the number of identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake finger is assigned between at a time offset between two identified signal paths.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: January 17, 2012
    Assignee: QUALCOMM Incorporated
    Inventors: Thejaswi Bharadwaj Madapushi Shesha, Brian Dong, Messay Amerga, Chih-Ping Hsu, Parvathanathan Subrahmanya, Xiaoming Zhu
  • Publication number: 20110191490
    Abstract: A method and apparatus for rate matching are disclosed by the invention, wherein the method includes: determining an initial value according to the total amount of data in the data stream and a predetermined initial offset value; performing an accumulation processing and an even distribution processing on said initial value and the amount of the data needing rate matching; determining the data needing rate matching from the data stream according to the processing result. With the solution proposed by the invention, a rate matching method using even distribution principle and accumulation principle can be determined. The method is simple, clear and accurate, and can be understood easily.
    Type: Application
    Filed: August 20, 2009
    Publication date: August 4, 2011
    Applicant: ZTE CORPORATION
    Inventors: Fanping Du, Xiaoming Zhu, Jianping Tao
  • Patent number: 7917504
    Abstract: Vectors representing objects in n-dimensional space are approximated by local polar coordinates on partitioned cells of the data space in response to a query, e.g., a query data vector entered with a request to find “k” nearest neighbors to the query vector. A set of candidate near neighbors is generated using the approximations, with the local polar coordinates being independent of the dimensionality of the data space. Then, an answer set of near neighbors is returned in response to the query. Thus, the present invention acts as a filter to reduce the number of actual data vectors in the data set that must be considered in responding to the query.
    Type: Grant
    Filed: March 26, 2008
    Date of Patent: March 29, 2011
    Assignee: International Business Machines Corporation
    Inventors: Guang-Ho Cha, Chin-Wan Chung, Dragutin Petkovic, Xiaoming Zhu
  • Patent number: 7795956
    Abstract: Current generation digital media processors support multi-format video resolutions, SDTV, Progressive Scan and HDTV. Built-in video encoders directly support NTSC and progressive 480P video outputs. These two video formats have different image bandwidth and output gain requirements, but are normally filtered by fixed bandwidth filters. This invention provides adjustable filter bandwidth for improved video filtering and solves the dilemma on filter bandwidth design for multi-format video applications. The invention is applicable to video reconstruction filter applications requiring bandwidth adjustable filters.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: September 14, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Xiaoming Zhu
  • Patent number: 7761472
    Abstract: Vectors representing objects in n-dimensional space are approximated by local polar coordinates on partitioned cells of the data space in response to a query, e.g., a query data vector entered with a request to find “k” nearest neighbors to the query vector. A set of candidate near neighbors is generated using the approximations, with the local polar coordinates being independent of the dimensionality of the data space. Then, an answer set of near neighbors is returned in response to the query. Thus, the present invention acts as a filter to reduce the number of actual data vectors in the data set that must be considered in responding to the query.
    Type: Grant
    Filed: October 9, 2007
    Date of Patent: July 20, 2010
    Assignee: International Business Machines Corporation
    Inventors: Guang-Ho Cha, Chin-Wan Chung, Dragutin Petkovic, Xiaoming Zhu
  • Publication number: 20100150212
    Abstract: A rake receiver finger assignor is configured to assign a rake receiver finger to a time offset between identified signal path time offsets in accordance with a concentration of identified signal paths from a transmitter to a rake receiver. In accordance with the exemplary embodiment, a number of identified signal paths having time offsets within a time window are observed to determine the concentration of signal paths identified by a path searcher. If the number of identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake finger is assigned between at a time offset between two identified signal paths.
    Type: Application
    Filed: February 24, 2010
    Publication date: June 17, 2010
    Applicant: QUALCOMM INCORPORATED
    Inventors: Thejaswi Bharadwaj Madapushi Sheshadri, Brian Dong, Messay Amerga, Chih-Ping Hsu, Parvathanathan Subrahmanya, Xiaoming Zhu
  • Patent number: 7739440
    Abstract: This invention is a method allowing for interfacing high speed hard disk drives (ATA-HDD) in high throughput PIO modes to currently available digital media processors (DMP). The prescribed interface programs signals available in the DMP external memory interface (EMIF) functions to match the requirements of ATA-HDD PIO functions. Selected signal redefinition and minimal glue logic is employed to form a seamless link between the EMIF I/O of the digital media processor DMP and the ATA-HDD hard drive.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: June 15, 2010
    Assignee: Texas Instruments Incorporated
    Inventor: Xiaoming Zhu
  • Patent number: 7693241
    Abstract: A rake receiver finger assignor is configured to assign a rake receiver finger to a time offset between identified signal path time offsets in accordance with a concentration of identified signal paths from a transmitter to a rake receiver. In accordance with the exemplary embodiment, a number of identified signal paths having time offsets within a time window are observed to determine the concentration of signal paths identified by a path searcher. If the number of identified signal paths indicates a concentrated distribution of signal paths such as during a fat path condition, at least one rake finger is assigned between at a time offset between two identified signal paths.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: April 6, 2010
    Assignee: QUALCOMM Incorporated
    Inventors: Thejaswi Bharadwaj Madapushi Sheshadri, Brian Dong, Messay Amerga, Chih-Ping Hsu, Parvathanathan Subrahmanya, Xiaoming Zhu
  • Publication number: 20100080192
    Abstract: Cell timing is detected by first trying to detect a target handover cell through detecting a primary synchronization channel (P-SCH) followed by a common pilot channel (CPICH). If that fails, N number of retrials is performed using a full-window search on the CPICH. The full-window CPICH search is performed blindly, without any slot timing information from the P-SCH. Performance is improved while maintaining the benefits of faster acquisition methods in good channel conditions. The full-window search is more time consuming, but takes advantage of the stronger CPICH transmission. In good channel conditions, a mobile device can proceed quickly with the normal method of timing acquisition. With failure, the mobile device can switch to the longer search which has a higher probability of successfully completing the hard handover procedure. The overall effect is a higher success rate of hard handovers without a uniform increase of time spent in cell timing acquisition.
    Type: Application
    Filed: September 26, 2008
    Publication date: April 1, 2010
    Applicant: QUALCOMM Incorporated
    Inventors: Brian Dong, Messay Amerga, Supratik Bhattacharjee, Xiaoming Zhu