Patents by Inventor Xiaofeng Wang

Xiaofeng Wang 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).

  • CACHE SECURING METHOD AND DEVICE CAPABLE OF RESISTING SIDE CHANNEL ATTACK
    Publication number: 20200242243
    Abstract: A method and a device for securing a cache against side channel attacks are provided. An allocator identifier ALLOCATOR field is added to each cache entry in the present disclosure. Whenever an entry is allocated in the cache, the identifier of the software domain currently running on the processor is filled into the ALLOCATOR field of the allocation entry. When accessing the cache, the cache entry can be hit only if the identifier of the software domain currently running on the processor is identical to the ALLOCATOR field in the cache entry. If the cache entry to be replaced is invalid or its ALLOCATOR field is identical to the identifier of the software domain currently running on the processor, then the existing entry in the cache is replaced directly; otherwise, the entire cache is emptied.
    Type: Application
    Filed: December 30, 2018
    Publication date: July 30, 2020
    Applicant: PHYTIUM TECHNOLOGY CO.,LTD.
    Inventors: Qiang DOU, Tianlei ZHAO, Chengyi ZHANG, Jun GAO, Hongbo XUE, Xiaoyan LIU, Wenzhe LI, Yujiao WANG, Jiahong YUAN, Longpeng SUN, Shuijingtao LI, Zhe DING, Xiaofeng WANG, Xiaodao WANG, Wenhui CAO, Shuaike ZHENG, Boqing YOU, Yuan YUAN, Xiaoli ZOU
  • System for dynamically rendering a graphical user interface
    Patent number: 10719202
    Abstract: A system for dynamically rendering a graphical user interface is disclosed. The system is configured to receive a login information associated with a user. The system then identifies a persona associated with the user based on the received login information. The identified persona is associated with a set of action commands and each action command includes a condition and a content item identifier. The system proceeds to identify the action commands associated with the identified persona, evaluate the conditions associated with the identified set of action commands, and determine the conditions that are satisfied based on the evaluating. Next, the system identifies the content item identifiers associated with the satisfied conditions and retrieves the content items associated with the identified content item identifiers. Then, the system renders the retrieved content items in a graphical user interface.
    Type: Grant
    Filed: April 25, 2018
    Date of Patent: July 21, 2020
    Assignee: Bank of America Corporation
    Inventors: Chandan K. Pankaj, Vijaykumar Goyal, Yacine Arbani, Xiaofeng Wang, Santosh Mali, Patrick Kevin Kane
  • External resource control of mobile devices
    Patent number: 10685142
    Abstract: The present disclosure provides a security enhanced channel control system useable on a wireless device comprising a policy module including at least one processor and memory, the policy module configured to store, in the memory, one or more security policies and apply a compliance check to a first system layer and a second system layer; and a first policy base stored in the memory of the policy module, the first policy base being associated with a mandatory access control (“MAC”) base and defining one more security polices for access to a plurality of channels associated with the first and second system layers. The policy module cooperates with the first policy base to establish one or more access control rules that are applied to at least one of the plurality of channels to preclude an unauthorized application from accessing at least one of the channels.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: June 16, 2020
    Assignees: Indiana University Research and Technology Corporation, The Board of Trustees of the University of Illinois
    Inventors: XiaoFeng Wang, Kan Yuan, Xiaoyong Zhou, Muhammad Naveed, Soteris Demetriou, Carl Gunter
  • CLEAN-SLATE SYNCHRONIZATION SIGNAL DESIGN AND CELL SEARCH ALGORITHMS
    Publication number: 20200178189
    Abstract: Aspects of the present disclosure provide techniques for design of synchronization signals for narrowband operation and other clean-slate, OFDM based systems such as enhanced component carrier (eCC) systems. An example method is provided for operations which may be performed by a BS to generate and transmit a dual-layer PSS, and correspondingly, techniques for a UE to detect the dual-layer PSS. The PSS may be generated utilizing a binary code cover and at least one sequence applied to a number of symbols within one or more subframes of a frame.
    Type: Application
    Filed: February 4, 2020
    Publication date: June 4, 2020
    Inventors: Jing LEI, Hao XU, Peter GAAL, Xiaofeng WANG, Wanshi CHEN, Yongbin WEI, Juan MONTOJO, Alberto RICO ALVARINO
  • Data transmission method, apparatus and system for shunting transmission of local service
    Patent number: 10616791
    Abstract: Disclosed are a data transmission method, apparatus and system for realizing, when a UE is in a non-connected state, that shunting transmission of a local service can be completed, and that the use efficiency of a wireless resource can be improved. The data transmission method comprises: after a data packet sent by a local service server is received by an MEC server, when it is determined that a UE for receiving the data packet is in an RRC non-connected state, sending the data packet corresponding to the UE to a P-GW so as to trigger a paging process of the UE; and the MEC server querying, in a pre-set duration, downlink bearer information for transmitting the data packet to the UE, and when the downlink bearer information is found, sending the data packet according to the downlink bearer information.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: April 7, 2020
    Assignee: DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD.
    Inventors: Jianghai Duan, Guodong Ding, Xiaofeng Wang
  • GLYCOSYLATED OXALATE DECARBOXYLASE AND PREPARATION AND APPLICATION THEREOF
    Publication number: 20200080070
    Abstract: The present invention discloses a glycosylated oxalate decarboxylase. The oxalate decarboxylase is derived from edible basidiomycetes, the glycosylated oxalate decarboxylase has an enzyme activity at the pH value of 1.5-7.5, the activity at the pH value of 1.5-2.0 is 10% greater than the optimum activity, and a specific activity is more than 2 U/mg. The present invention also discloses preparation and application of the glycosylated oxalate decarboxylase. The glycosylated oxalate decarboxylase disclosed by the present invention can keep the activity under a low pH value, and can effectively prevent and treat kidney stones.
    Type: Application
    Filed: July 7, 2017
    Publication date: March 12, 2020
    Applicant: WUHAN KANGFUDE BIOTECHNOLOGY CO., LTD.
    Inventors: Haifeng LIU, Baoping SONG, Xianqiao CHEN, Huoqing CHEN, Pei TONG, Wei WANG, Xiaofeng WANG
  • Method of operating a fuel cell stack having a temporarily disabled bleed valve
    Patent number: 10581100
    Abstract: A method of operating a fuel cell stack is described. The fuel cell stack includes a cathode, an anode, and a temporarily disabled bleed valve that is otherwise configured to transition from a first position to a second position and thereby modulate nitrogen drained from the anode. The method includes increasing a first pressure in the anode via a controller and, concurrent to increasing, decreasing a second pressure in the cathode via the controller. A system and a device including the fuel cell stack are also described.
    Type: Grant
    Filed: June 6, 2018
    Date of Patent: March 3, 2020
    Assignee: GM Global Technology Operations LLC
    Inventors: Manish Sinha, Chad Dubois, Xiaofeng Wang, Sergio E. Garcia
  • Systems and methods for indirect threshold voltage sensing in an electronic display
    Patent number: 10573209
    Abstract: An electronic device includes a display panel with pixels arranged in at least one row and at least one column. The electronic device also includes a sensing channel coupled to the at least one column. The sensing channel indirectly calculates a threshold voltage of the plurality of pixels based on an application of a first current level and a second current level to a data line of a first column of the at least one column of the pixels.
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: February 25, 2020
    Assignee: Apple Inc.
    Inventors: Yafei Bi, Xiaofeng Wang, Haifeng Li, Mohammad B. Vahid Far, Hopil Bae, Hung Shen Lin, Hyunwoo Nho, Wei H. Yao
  • STROLLER
    Publication number: 20200010106
    Abstract: Embodiments include, but are not limited to, a stroller with a collapsible frame where an upper end of the side armrest rotatably connected to a slider, the lower end of the side armrest rotatably connected to an upper end of the rear leg set, a middle portion of the rear leg set rotatably connected to a lower end of the handlebar set, the upper end of the rear leg set and the lower end of the side armrest rotatably connected to the upper end of the front leg set, the middle portion of the front leg set rotatably connected to the front end of the seat set, the rear end of the seat set rotatably connected to the lower end of the handlebar set, and the slider capable of sliding along the length of the handlebar set, wheel assemblies, and a locking mechanism, between the handlebar set and the slider.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 9, 2020
    Inventors: Xiaofeng WANG, Shunping Yang
  • Spectrum shaping voltage to current converter
    Patent number: 10523153
    Abstract: A voltage controlled oscillator (VCO) is disclosed. The VCO includes an amplifier that receives a control signal and a feedback signal and generates an amplified output signal based on the difference between the control signal and the feedback signal. The VCO also includes circuitry to generate an oscillating output signal based on the amplifier output signal. Additionally, the VCO includes a feedback amplifier that generates the feedback signal based on the output of the amplifier. The feedback amplifier includes a first resistor connected in parallel with a second resistor, the second resistor having an adjustable resistance.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: December 31, 2019
    Assignee: Lattice Semiconductor Corporation
    Inventors: Qiming Wu, Yibin Fu, Yu Shen, Zhi Wu, Kai Lei, Kai Zhou, Kexin Luo, Xiaofeng Wang
  • HYBRID ARCHITECTURE FOR ZERO BORDER DISPLAY
    Publication number: 20190385509
    Abstract: Hybrid architectures and method methods of operating a display panel are described. In an embodiment, row driver and pixel driver functions are combined in a group of backbone hybrid pixel driver chips, wherein global signal lines are distributed to the backbone hybrid pixel driver chips, where the global signals are manipulated and distributed to a row of pixel driver chips.
    Type: Application
    Filed: March 18, 2019
    Publication date: December 19, 2019
    Inventors: Xiang Lu, Mahdi Farrokh Baroughi, Xiaofeng Wang, Derek K. Shaeffer, Henry C. Jen, Hopil Bae
  • METHOD OF OPERATING A FUEL CELL STACK HAVING A TEMPORARILY DISABLED BLEED VALVE
    Publication number: 20190379074
    Abstract: A method of operating a fuel cell stack is described. The fuel cell stack includes a cathode, an anode, and a temporarily disabled bleed valve that is otherwise configured to transition from a first position to a second position and thereby modulate nitrogen drained from the anode. The method includes increasing a first pressure in the anode via a controller and, concurrent to increasing, decreasing a second pressure in the cathode via the controller. A system and a device including the fuel cell stack are also described.
    Type: Application
    Filed: June 6, 2018
    Publication date: December 12, 2019
    Applicant: GM Global Technology Operations LLC
    Inventors: Manish Sinha, Chad Dubois, Xiaofeng Wang, Sergio E. Garcia
  • METHOD OF OPERATING A FUEL CELL STACK HAVING A TEMPORARILY DISABLED DRAIN VALVE
    Publication number: 20190379075
    Abstract: A method of operating a fuel cell stack is described. The fuel cell stack includes a cathode, an anode, a sump configured for collecting water from the anode, and a temporarily disabled drain valve that is otherwise configured to transition from a first position to a second position and thereby modulate water drained from the sump. The method includes increasing a first pressure in the anode via a controller. The method also includes, concurrent to increasing, decreasing a second pressure in the cathode via the controller and, concurrent to decreasing, maintaining a relative humidity of less than a threshold relative humidity in the cathode via the controller.
    Type: Application
    Filed: June 6, 2018
    Publication date: December 12, 2019
    Applicant: GM Global Technology Operations LLC
    Inventors: Manish Sinha, Xiaofeng Wang, Chad Dubois, Sergio E. Garcia
  • HUMAN ENDOTHELIN RECEPTOR ANTIBODY AND USE THEREOF
    Publication number: 20190365894
    Abstract: The present invention discloses an antibody specifically binding to a human endothelin receptor and uses thereof, where the antibody can inhibit the functions of the human endothelin receptor. The present invention includes the preparation, cloning, expression, and characterization of the antibody. The present invention can be used to effectively treat pulmonary arterial hypertension, a disease associated with pulmonary arterial hypertension, and a reproductive organ cancer in a human.
    Type: Application
    Filed: August 12, 2019
    Publication date: December 5, 2019
    Inventors: Cheng Zhang, Hua Zhang, Xiaofeng Wang, Chenjiang Yao, Yan Jiang, Min Wang, Xinxin Shi, Hao Pan, Shuqian Jing
  • LOCAL PASSIVE MATRIX DISPLAY
    Publication number: 20190347985
    Abstract: Local passive matrix displays and methods of operation are described. In an embodiment, the display includes a pixel driver chip coupled with a matrix of rows and columns of LEDs. The pixel driver chips may be arranged in rows across the display with separate portions to operate separate matrices of LEDs.
    Type: Application
    Filed: February 11, 2019
    Publication date: November 14, 2019
    Inventors: Derek K. Shaeffer, Mahdi Farrokh Baroughi, Xiaofeng Wang, Sam S. Li, John T. Wetherell, Henry C. Jen, Xiang Lu, Hasan Akyol, Hopil Bae, Xiang Fang, Hjalmar Edzer Ayco Huitema, Tore Nauta
  • SYSTEM FOR DYNAMICALLY RENDERING A GRAPHICAL USER INTERFACE
    Publication number: 20190332246
    Abstract: A system for dynamically rendering a graphical user interface is disclosed. The system is configured to receive a login information associated with a user. The system then identifies a persona associated with the user based on the received login information. The identified persona is associated with a set of action commands and each action command includes a condition and a content item identifier. The system proceeds to identify the action commands associated with the identified persona, evaluate the conditions associated with the identified set of action commands, and determine the conditions that are satisfied based on the evaluating. Next, the system identifies the content item identifiers associated with the satisfied conditions and retrieves the content items associated with the identified content item identifiers. Then, the system renders the retrieved content items in a graphical user interface.
    Type: Application
    Filed: April 25, 2018
    Publication date: October 31, 2019
    Inventors: Chandan K. Pankaj, Vijaykumar Goyal, Yacine Arbani, Xiaofeng Wang, Santosh Mali, Patrick Kevin Kane
  • Noise reduction in LED sensing circuit for electronic display
    Patent number: 10460642
    Abstract: Systems, methods, and devices are provided to reduce noise present in sensing circuits used for calibrating light emitting diodes (e.g., organic light emitting diodes) in electronic display devices. Such a system may include a display that renders image data using self-emissive pixels. Values on the pixels may be sensed using a current source that outputs a current and a comparator that receives the current. The comparator changes states when a voltage signal output by the capacitor crosses a first threshold voltage or a second threshold voltage. A controller receives a first time when the comparator component changes states based on the voltage signal, receives a second time when the comparator component changes states based on the voltage signal, determines a current value based on the first time and the second time, and calibrates a pixel based on the current value.
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: October 29, 2019
    Assignee: Apple Inc.
    Inventors: Hung Sheng Lin, Jiayi Jin, Wei H. Yao, Hyunwoo Nho, Guangmao Xing, Weijun Yao, Xiaofeng Wang, Yafei Bi, Haifeng Li
  • Hierarchical clustering
    Patent number: 10416958
    Abstract: In one embodiment, a method includes receiving data points, determining first-level cluster centroids using the data points, and assigning each data point to at least one first-level cluster centroid. The method also includes determining second-level cluster centroids using data points assigned to a particular first-level cluster centroid and assigning each of the data points previously assigned to the particular first-level cluster centroid to at least one second-level cluster centroid. The method further includes determining clusters based on the first-level cluster centroids and the second-level cluster centroids, and assigning each data point to at least one cluster.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: September 17, 2019
    Assignee: Bank of America Corporation
    Inventors: Mandeep Singh, Xiaofeng Wang
  • ADAPTIVE EMISSION CLOCKING CONTROL FOR DISPLAY DEVICES
    Publication number: 20190279552
    Abstract: A display device may include a plurality of pixels that may display image data on a display. The display device may also include a circuit that may receive pixel data including a gray level for at least one pixel of the plurality of pixels. The circuit may then receive an emission clock signal using a clock circuit based on the pixel data, such that the emission clock signal may cause the at least one pixel to receive a current for an amount of time based on the gray level. The circuit may then gate off the clock circuit after the amount of time.
    Type: Application
    Filed: September 20, 2017
    Publication date: September 12, 2019
    Inventors: Derek K. Shaeffer, Hopil Bae, Yafei Bi, Wei H. Yao, Xiaofeng Wang
  • Transform coefficient coding for context-adaptive binary entropy coding of video
    Patent number: 10412396
    Abstract: Methods and devices for encoding and decoding video are described that partition transform blocks into coefficient groups. The coefficients within non-zero coefficients are run-length coded in a reverse scan order within the group. Prior to coefficient coding, data is encoded indicating which coefficient group in group scan order is the last to contain a non-zero coefficient. Then data is encoded indicating the position within that last non-zero coefficient group of the last non-zero coefficient in scan order inside the coefficient group. Thus the decoder is able to decode run-length data knowing the positions of the coefficients and eliminating the need for end-of-block flags.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: September 10, 2019
    Assignee: BlackBerry Limited
    Inventors: Dake He, Tianying Ji, Jing Wang, Xiaofeng Wang