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).
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Publication number: 20170347257Abstract: 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: ApplicationFiled: May 24, 2017Publication date: November 30, 2017Inventors: Zhigang XU, Pui-Sze HO
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Patent number: 9818174Abstract: 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: GrantFiled: September 24, 2014Date of Patent: November 14, 2017Assignee: Microsoft Technology Licensing, LLCInventors: Oreste Dorin Ungureanu, Zhigang Xu, Amos Eshel, Shalini Akella, Marcus Andrews, Leonardo Blanco, Lucas Brodzinski
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Patent number: 9641127Abstract: 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: GrantFiled: June 4, 2015Date of Patent: May 2, 2017Assignee: Marvell Semiconductor, Inc.Inventors: Zhigang Xu, Junxiong Deng, Taotao Yan
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Publication number: 20170113266Abstract: 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: ApplicationFiled: January 9, 2017Publication date: April 27, 2017Inventors: Yonglin Kang, Xinhua Wang, Guoming Zhu, Han Ma, Jianchao Ma, Jinbo Qu, Hang Yu, Zhijun Zhang, Min Jiang, Zhigang Xu
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Publication number: 20160376273Abstract: 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 beneficialType: ApplicationFiled: November 30, 2015Publication date: December 29, 2016Inventors: Zhongzhu Chen, Zhigang Xu, Dianyong Tang
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Patent number: 9502877Abstract: 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: GrantFiled: March 6, 2013Date of Patent: November 22, 2016Assignee: 3M Innovative Properties CompanyInventors: Qingqiang Ma, Huawei Liu, Gaofei Guo, Zhigang Xu, Jinquan Yang, Zheng Huang, Jiangjiang Ma
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Patent number: 9496905Abstract: 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: GrantFiled: September 3, 2015Date of Patent: November 15, 2016Assignee: Spreadtrum Communications USA Inc.Inventors: David Haub, Zhigang Xu, Jarrett Malone
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Patent number: 9419587Abstract: 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: GrantFiled: June 4, 2015Date of Patent: August 16, 2016Assignee: Marvell International Ltd.Inventors: Zhigang Xu, Junxiong Deng, Taotao Yan
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Patent number: 9379747Abstract: 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: GrantFiled: August 6, 2015Date of Patent: June 28, 2016Assignee: SPREADTRUM COMMUNICATIONS USA INC.Inventors: David Haub, Zhigang Xu, Jarrett Malone
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Patent number: 9343893Abstract: 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: GrantFiled: July 27, 2011Date of Patent: May 17, 2016Assignee: 3M Innovative Properties CompanyInventors: Ming Zhang, Jinquan Yang, Zheng Huang, Zhigang Xu, Jiangjiang Ma, Lei Guo
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Publication number: 20160086313Abstract: 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: ApplicationFiled: September 24, 2014Publication date: March 24, 2016Inventors: Oreste Dorin Ungureanu, Zhigang Xu, Amos Eshel, Shalini Akella, Marcus Andrews, Leonardo Blanco, Lucas Brodzinski
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Publication number: 20150381222Abstract: 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: ApplicationFiled: September 3, 2015Publication date: December 31, 2015Inventors: David Haub, Zhigang Xu, Jarrett Malone
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Publication number: 20150349820Abstract: 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: ApplicationFiled: August 6, 2015Publication date: December 3, 2015Inventors: David Haub, Zhigang Xu, Jarrett Malone
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Patent number: 9143246Abstract: 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: GrantFiled: July 21, 2014Date of Patent: September 22, 2015Assignee: Spreadtrum Communications USA Inc.Inventors: David Haub, Zhigang Xu, Jarrett Malone
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Patent number: 9112569Abstract: 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: GrantFiled: June 23, 2014Date of Patent: August 18, 2015Assignee: Spreadtrum Communications USA Inc.Inventors: David Haub, Zhigang Xu, Jarrett Malone
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Patent number: 9010746Abstract: 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: GrantFiled: January 11, 2012Date of Patent: April 21, 2015Assignee: Shandong New Beiyang Information Technology Co., Ltd.Inventors: Zhenxing Zhao, Zhigang Xu, Ming Gao, Qingbang Xu
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Publication number: 20150073259Abstract: 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: ApplicationFiled: July 20, 2012Publication date: March 12, 2015Applicant: THE RESEARCH FOUNDATION FOR THE STATE UNIVERSITY OF NEW YORKInventors: Yu Zhou, Kaarvannan Thiruvalluvan, Lukasz Krzeminski, William H. Moore, Zhigang Xu, Zhengrong Liang
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Publication number: 20140368519Abstract: 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: ApplicationFiled: June 13, 2013Publication date: December 18, 2014Inventors: Daniel Wood, Vlad Alexandrov, Zhigang Xu, Max McMullen, Marcus Andrews, Bennett Sorbo, Andrei Baioura, Mikhail Leonov
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Patent number: 8886149Abstract: 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: GrantFiled: July 22, 2013Date of Patent: November 11, 2014Assignee: Spreadtrum Communications USAInventors: David Haub, Zhigang Xu, Jarrett Malone
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Publication number: 20140329480Abstract: 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: ApplicationFiled: July 21, 2014Publication date: November 6, 2014Applicant: Spreadtrum Communications USAInventors: David Haub, Zhigang Xu, Jarrett Malone