Patents by Inventor Zhigang Xu

Zhigang Xu 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: 20170347257
    Abstract: A method and a network node device for auditing a Visitor Location Register (VLR) to manage communication device retention. The method comprises, when the age of a communication device's age in the VLR reaches or exceeds a first threshold, triggering a request to a Mobility Management Entity (MME) to notify the VLR of the communication device's activity. The method further comprises receiving a notification from the MME indicating the communication device's activity, and updating the communication device's aging information based on the notification.
    Type: Application
    Filed: May 24, 2017
    Publication date: November 30, 2017
    Inventors: Zhigang XU, Pui-Sze HO
  • Patent number: 9818174
    Abstract: Transitions between monitor configurations may be streamlined by minimizing the tearing down and recreating of render targets and primary frame buffers associated with the monitors. In at least one example, the techniques described herein include identifying at least one render target in a first monitor configuration that is also in a second monitor configuration. In response to identifying the at least one render target in the first monitor configuration that is also in the second monitor configuration, the techniques herein describe maintaining the at least one render target during a transition between the first monitor configuration to second monitor configuration.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: November 14, 2017
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Oreste Dorin Ungureanu, Zhigang Xu, Amos Eshel, Shalini Akella, Marcus Andrews, Leonardo Blanco, Lucas Brodzinski
  • Patent number: 9641127
    Abstract: Aspects of the disclosure provide an operational transconductance amplifier (OTA) having an output stage. The output stage includes a first amplifier path configured to drive a first output current from a first power supply and a first resistor coupled between the first power supply and a source terminal of a first transistor in the first amplifier path. The first resistor is configured to improve a linearity of the OTA.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: May 2, 2017
    Assignee: Marvell Semiconductor, Inc.
    Inventors: Zhigang Xu, Junxiong Deng, Taotao Yan
  • Publication number: 20170113266
    Abstract: The present invention provides a sector-shaped section of a continuous casting machine for heavy reduction of a solidified terminal of a continuously cast slab and a heavy reduction method.
    Type: Application
    Filed: January 9, 2017
    Publication date: April 27, 2017
    Inventors: Yonglin Kang, Xinhua Wang, Guoming Zhu, Han Ma, Jianchao Ma, Jinbo Qu, Hang Yu, Zhijun Zhang, Min Jiang, Zhigang Xu
  • Publication number: 20160376273
    Abstract: Disclosed is a compound represented by formula (I) or a pharmaceutically acceptable salt thereof as an inhibitor of phosphodiesterase type 5 and its therapeutic use in treating and/or preventing a disease or condition related with phosphodiesterase type 5 in a mammal wherein an inhibition of phosphodiesterase type 5 is considered beneficial
    Type: Application
    Filed: November 30, 2015
    Publication date: December 29, 2016
    Inventors: Zhongzhu Chen, Zhigang Xu, Dianyong Tang
  • Patent number: 9502877
    Abstract: The present invention provides an inlet funnel (100) for cable terminal, which comprises a funnel body part (10) and a fixation part (20). The funnel body part (10) has one end with a smaller opening and the other end with a larger opening, said funnel body (10) having a gradually increasing diameter (D) from said one end with the smaller opening to said other end with the larger opening, and the funnel body (10) is suitably to be installed over an electrical cable (C). The fixation part (20) is provided at said other end with the larger opening of said funnel body part (10) and adapted for the attachment of said inlet funnel (100). The inlet funnel (100) further comprises a pretreated mounting part (30) extending from said one end side with the smaller opening towards said the other end side with the larger opening. Accordingly, the inlet funnel for cable terminal according to the present invention may reduce workload, save time, and simplify the mounting process.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: November 22, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Qingqiang Ma, Huawei Liu, Gaofei Guo, Zhigang Xu, Jinquan Yang, Zheng Huang, Jiangjiang Ma
  • Patent number: 9496905
    Abstract: A receiver architecture optimizes receiver performance in the presence of interference. In various embodiments, power estimation circuits are used with variable selectivity to determine the exact nature of the interference and to optimize the performance correspondingly. The variable selectivity is achieved using stages of filtering with progressively narrower bandwidths. Also, the actual method of optimizing the receiver performance is an improvement compared to the traditional techniques in that the gain settings and the baseband filter order (stages to be used) will be optimized based on the nature of the interference as determined by the power detector measurements. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: November 15, 2016
    Assignee: Spreadtrum Communications USA Inc.
    Inventors: David Haub, Zhigang Xu, Jarrett Malone
  • Patent number: 9419587
    Abstract: Aspects of the disclosure provide a circuit having a filter circuit and a controller. The filter circuit drives a load circuit having different input impedances under different operation conditions. The filter circuit is configured to have a first output circuit coupled with a first resistor and a second output circuit coupled with a second resistor. The controller is configured to generate control signals to select one of the first output circuit and the second output circuit based on an operation condition of the load circuit.
    Type: Grant
    Filed: June 4, 2015
    Date of Patent: August 16, 2016
    Assignee: Marvell International Ltd.
    Inventors: Zhigang Xu, Junxiong Deng, Taotao Yan
  • Patent number: 9379747
    Abstract: Embodiments include a novel receiver architecture to optimize receiver performance in the presence of interference. In various embodiments, the presence of interference is detected, and the relative frequency location of the interference is detected. The relative frequency location specifies whether the frequency of the interference is high side (above the desired signal, i.e., at a higher frequency) or low side (below the desired signal). The receiver is configured based on the detected interference and relative location thereof. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: June 28, 2016
    Assignee: SPREADTRUM COMMUNICATIONS USA INC.
    Inventors: David Haub, Zhigang Xu, Jarrett Malone
  • Patent number: 9343893
    Abstract: A device and a method for a field expansion. A support core (30) is inserted into the device by a field expansion apparatus. The field expansion apparatus has a pressure applying means (20) defining a radially expandable inner surface and a flat surface radially outwardly extending from the radially expandable inner surface. The device comprises an elastomeric tubing (10) and an adapter (40). The elastomeric tubing (10) has a forward end opposite a rearward end and an axial bore extending therethrough configured to receive the support core (30). The adapter (40) has a step portion (41) defined by a radial outer surface (42) and a flat surface (43) radially outwardly extending from the radial outer surface (42), and an axial bore (44) extending therethrough. The axial bore (44) has a diameter substantially the same as the diameter of the axial bore (12) of the elastomeric tubing (10).
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: May 17, 2016
    Assignee: 3M Innovative Properties Company
    Inventors: Ming Zhang, Jinquan Yang, Zheng Huang, Zhigang Xu, Jiangjiang Ma, Lei Guo
  • Publication number: 20160086313
    Abstract: Transitions between monitor configurations may be streamlined by minimizing the tearing down and recreating of render targets and primary frame buffers associated with the monitors. In at least one example, the techniques described herein include identifying at least one render target in a first monitor configuration that is also in a second monitor configuration. In response to identifying the at least one render target in the first monitor configuration that is also in the second monitor configuration, the techniques herein describe maintaining the at least one render target during a transition between the first monitor configuration to second monitor configuration.
    Type: Application
    Filed: September 24, 2014
    Publication date: March 24, 2016
    Inventors: Oreste Dorin Ungureanu, Zhigang Xu, Amos Eshel, Shalini Akella, Marcus Andrews, Leonardo Blanco, Lucas Brodzinski
  • Publication number: 20150381222
    Abstract: A receiver architecture optimizes receiver performance in the presence of interference. In various embodiments, power estimation circuits are used with variable selectivity to determine the exact nature of the interference and to optimize the performance correspondingly. The variable selectivity is achieved using stages of filtering with progressively narrower bandwidths. Also, the actual method of optimizing the receiver performance is an improvement compared to the traditional techniques in that the gain settings and the baseband filter order (stages to be used) will be optimized based on the nature of the interference as determined by the power detector measurements. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Application
    Filed: September 3, 2015
    Publication date: December 31, 2015
    Inventors: David Haub, Zhigang Xu, Jarrett Malone
  • Publication number: 20150349820
    Abstract: Embodiments include a novel receiver architecture to optimize receiver performance in the presence of interference. In various embodiments, the presence of interference is detected, and the relative frequency location of the interference is detected. The relative frequency location specifies whether the frequency of the interference is high side (above the desired signal, i.e., at a higher frequency) or low side (below the desired signal). The receiver is configured based on the detected interference and relative location thereof. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Application
    Filed: August 6, 2015
    Publication date: December 3, 2015
    Inventors: David Haub, Zhigang Xu, Jarrett Malone
  • Patent number: 9143246
    Abstract: A receiver architecture optimizes receiver performance in the presence of interference. In various embodiments, power estimation circuits are used with variable selectivity to determine the exact nature of the interference and to optimize the performance correspondingly. The variable selectivity is achieved using stages of filtering with progressively narrower bandwidths. Also, the actual method of optimizing the receiver performance is an improvement compared to the traditional techniques in that the gain settings and the baseband filter order (stages to be used) will be optimized based on the nature of the interference as determined by the power detector measurements. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: September 22, 2015
    Assignee: Spreadtrum Communications USA Inc.
    Inventors: David Haub, Zhigang Xu, Jarrett Malone
  • Patent number: 9112569
    Abstract: Embodiments include a novel receiver architecture to optimize receiver performance in the presence of interference. In various embodiments, the presence of interference is detected, and the relative frequency location of the interference is detected. The relative frequency location specifies whether the frequency of the interference is high side (above the desired signal, i.e., at a higher frequency) or low side (below the desired signal). The receiver is configured based on the detected interference and relative location thereof. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Grant
    Filed: June 23, 2014
    Date of Patent: August 18, 2015
    Assignee: Spreadtrum Communications USA Inc.
    Inventors: David Haub, Zhigang Xu, Jarrett Malone
  • Patent number: 9010746
    Abstract: A sheet medium processing device comprising a stacking mechanism mounted on a frame, a first switching mechanism and a retractable paper baffle adjacent to the medium exit of the stacking mechanism; the stacking mechanism comprises a lower ticket stacking assembly, an upper ticket stacking assembly capable of moving parallelly above the lower ticket stacking assembly and a parallel movement confining mechanism, wherein the upper ticket stacking assembly and the lower ticket stacking assembly are both belt-conveyor mechanisms, and the belt of the upper ticket stacking assembly has a tendency of tightly pressing against the belt of the lower ticket stacking assembly. The first switching mechanism simultaneously controls the reciprocation of the paper baffle and the parallel movement of the upper ticket stacking assembly, enabling the stacking mechanism to be selectively provided with a transport state and a stacking state.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: April 21, 2015
    Assignee: Shandong New Beiyang Information Technology Co., Ltd.
    Inventors: Zhenxing Zhao, Zhigang Xu, Ming Gao, Qingbang Xu
  • Publication number: 20150073259
    Abstract: An image-guided system and method for performing needle biopsy on a moving lung nodule of a body is provided. CT images of the lung nodule are obtained to generate a motion model, based on which an optimal needle advancing path is determined. The motion of the lung nodule and the motion of a fiducial marker attached to the body are correlated. The motion of the fiducial marker is tracked and monitored by a camera to determine a position of the lung nodule based on the correlation. A time for advancing the needle is determined based on a motion attribute of the reference. The needle is advanced by a robotic needle manipulator at the predetermined time along the path to accomplish the needle placement.
    Type: Application
    Filed: July 20, 2012
    Publication date: March 12, 2015
    Applicant: THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORK
    Inventors: Yu Zhou, Kaarvannan Thiruvalluvan, Lukasz Krzeminski, William H. Moore, Zhigang Xu, Zhengrong Liang
  • Publication number: 20140368519
    Abstract: To manage dynamic adjustment of the refresh rate of a computer display, the operating system defines at least two playback modes: one or more custom modes that can be selected by applications, and a standard mode which is a default setting for the system that can be expected by applications. The operating system provides an application programming interface that enables an application to request using a custom mode. If approved to use the custom mode, then the application presents frames for display based on the custom mode. The operating system stores timing data for each buffered frame indicating how to play the frame in both standard mode and the custom mode. If a transition back to the standard mode occurs, the operating system uses the timing data to properly present frames of video until the application stops generating frames of video in the custom mode.
    Type: Application
    Filed: June 13, 2013
    Publication date: December 18, 2014
    Inventors: Daniel Wood, Vlad Alexandrov, Zhigang Xu, Max McMullen, Marcus Andrews, Bennett Sorbo, Andrei Baioura, Mikhail Leonov
  • Patent number: 8886149
    Abstract: Embodiments include a novel receiver architecture to optimize receiver performance in the presence of interference. In various embodiments, power estimation circuits are used to determine the exact nature of the interference and to optimize the performance correspondingly. Variable selectivity of at least one power estimation circuit is achieved using a filter with variable bandwidth, with power measurements taken using different bandwidth settings. Also, the actual method of optimizing the receiver performance is novel compared to the prior art in that the gain settings and the baseband filter order (stages to be used) will be optimized based on the nature of the interference as determined by the power detector measurements. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Grant
    Filed: July 22, 2013
    Date of Patent: November 11, 2014
    Assignee: Spreadtrum Communications USA
    Inventors: David Haub, Zhigang Xu, Jarrett Malone
  • Publication number: 20140329480
    Abstract: A receiver architecture optimizes receiver performance in the presence of interference. In various embodiments, power estimation circuits are used with variable selectivity to determine the exact nature of the interference and to optimize the performance correspondingly. The variable selectivity is achieved using stages of filtering with progressively narrower bandwidths. Also, the actual method of optimizing the receiver performance is an improvement compared to the traditional techniques in that the gain settings and the baseband filter order (stages to be used) will be optimized based on the nature of the interference as determined by the power detector measurements. For a device such as a cellular phone that operates in a dynamic and changing environment where interference is variable, embodiments advantageously provide the capability to modify the receiver's operational state depending on the interference.
    Type: Application
    Filed: July 21, 2014
    Publication date: November 6, 2014
    Applicant: Spreadtrum Communications USA
    Inventors: David Haub, Zhigang Xu, Jarrett Malone