Patents by Inventor Xuan Phan
Xuan Phan 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: 20200395797Abstract: In one embodiment, a magnet array and ironless winding for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators forming poles on the reinforcing side of the array, and such that a magnetic moment at the poles is oriented generally perpendicular to the reinforcing side of the array, the winding being adjacent to the array and comprising conductor bundles having a generally rectangular cross-section arranged such that a long side of the generally rectangular cross-section is transverse to a direction of magnetic field lines at the poles.Type: ApplicationFiled: April 27, 2020Publication date: December 17, 2020Applicant: AEROVIRONMENT, INC.Inventors: Bart Dean HIBBS, Bang Xuan PHAN
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Patent number: 10666098Abstract: In one embodiment, a magnet array and ironless winding for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators forming poles on the reinforcing side of the array, and such that a magnetic moment at the poles is oriented generally perpendicular to the reinforcing side of the array, the winding being adjacent to the array and comprising conductor bundles having a generally rectangular cross-section arranged such that a long side of the generally rectangular cross-section is transverse to a direction of magnetic field lines at the poles.Type: GrantFiled: March 1, 2018Date of Patent: May 26, 2020Assignee: AeroVironment, Inc.Inventors: Bart Dean Hibbs, Bang Xuan Phan
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Patent number: 10437993Abstract: A mechanism called time-deterministic replay (TOR) that can reproduce the execution of a program, including its precise timing. Without TOR, reproducing the timing of an execution is difficult because there are many sources of timing variability. TOR uses a combination of techniques to either mitigate or eliminate most of these sources of variability. Using a prototype implementation of TOR in a Java Virtual Machine, we show it is possible to reproduce the timing to within 1.85% of the original execution. A study of one of the applications of TOR is described: the detection of a covert timing channel. Timing channels can be used to exfiltrate information from a compromised machine by subtly varying timing of the machine's outputs, TOR can detect this variation. Unlike prior solutions, which generally look for a specific type of timing channel, our approach can detect a wide variety of channels with high accuracy.Type: GrantFiled: October 5, 2015Date of Patent: October 8, 2019Assignees: THE TRUSTEES OF THE UNIVERSITY OF PENNSYLVANIA, GEORGETOWN UNIVERSITYInventors: Ang Chen, Hanjun Xiao, William Bradley Moore, Andreas Haeberlen, Linh Thi Xuan Phan, Micah Sherr, Wenchao Zhou
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Patent number: 10324621Abstract: Facilitating analysis of user interface gesture patterns is described. In example implementations, a computing device acquires data that describes a user interface gesture pattern, such as finger movements on a touchscreen, in terms of pixels of a visual display. A repetitive arrangement of polygons, such as a grid of rectangles, is logically overlaid on the visual display. The computing device transforms the pixel-based data into polygon-based data that represents the gesture pattern in terms of polygons traversed by the gesture pattern. The computing device also converts the polygon-based data into text-based data such that the gesture pattern is represented by textual characters, such as a text string. The text string can include, for instance, a list of polygons traversed by the gesture pattern. The text-based data is forwarded to a service that can efficiently analyze relationships that may exist among multiple gesture patterns across multiple devices or end users.Type: GrantFiled: March 2, 2017Date of Patent: June 18, 2019Assignee: Adobe Inc.Inventors: Peter Raymond Fransen, Christine Xuan Phan
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Publication number: 20180331590Abstract: In one embodiment, a magnet array and ironless winding for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators forming poles on the reinforcing side of the array, and such that a magnetic moment at the poles is oriented generally perpendicular to the reinforcing side of the array, the winding being adjacent to the array and comprising conductor bundles having a generally rectangular cross-section arranged such that a long side of the generally rectangular cross-section is transverse to a direction of magnetic field lines at the poles.Type: ApplicationFiled: March 1, 2018Publication date: November 15, 2018Applicant: AeroVironment, Inc.Inventors: Bart Dean HIBBS, Bang Xuan PHAN
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Publication number: 20180253224Abstract: Facilitating analysis of user interface gesture patterns is described. In example implementations, a computing device acquires data that describes a user interface gesture pattern, such as finger movements on a touchscreen, in terms of pixels of a visual display. A repetitive arrangement of polygons, such as a grid of rectangles, is logically overlaid on the visual display. The computing device transforms the pixel-based data into polygon-based data that represents the gesture pattern in terms of polygons traversed by the gesture pattern. The computing device also converts the polygon-based data into text-based data such that the gesture pattern is represented by textual characters, such as a text string. The text string can include, for instance, a list of polygons traversed by the gesture pattern. The text-based data is forwarded to a service that can efficiently analyze relationships that may exist among multiple gesture patterns across multiple devices or end users.Type: ApplicationFiled: March 2, 2017Publication date: September 6, 2018Applicant: Adobe Systems IncorporatedInventors: Peter Raymond Fransen, Christine Xuan Phan
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Publication number: 20180211281Abstract: Techniques and systems are described in which an image similarity determination of paths is used to control digital content output. In one example, a plurality of coordinates is received that represent a plurality of physical locations within a physical environment. A digital image is then generated having a path that describes the plurality of coordinates. The path of the generated digital image is compared to a plurality of reference paths described by respective ones of a plurality of reference digital images, e.g., through image similarity. An item of digital content is selected based at least in part on the comparison. Output is then controlled of the selected item of the digital content.Type: ApplicationFiled: January 26, 2017Publication date: July 26, 2018Applicant: Adobe Systems IncorporatedInventors: Peter Raymond Fransen, Christine Xuan Phan
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Patent number: 9941757Abstract: In one possible embodiment, a magnet array for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators located at poles on the reinforcing side of the array.Type: GrantFiled: January 12, 2016Date of Patent: April 10, 2018Assignee: AeroVironment, Inc.Inventors: Bart Dean Hibbs, Bang Xuan Phan
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Publication number: 20170213028Abstract: A mechanism called time-deterministic replay (TOR) that can reproduce the execution of a program, including its precise timing. Without TOR, reproducing the timing of an execution is difficult because there are many sources of timing variability. TOR uses a combination of techniques to either mitigate or eliminate most of these sources of variability. Using a prototype implementation of TOR in a Java Virtual Machine, we show it is possible to reproduce the timing to within 1.85% of the original execution. A study of one of the applications of TOR is described: the detection of a covert timing channel. Timing channels can be used to exfiltrate information from a compromised machine by subtly varying timing of the machine's outputs, TOR can detect this variation. Unlike prior solutions, which generally look for a specific type of timing channel, our approach can detect a wide variety of channels with high accuracy.Type: ApplicationFiled: October 5, 2015Publication date: July 27, 2017Inventors: Ang Chen, Hanjun Xiao, William Bradley Moore, Andreas Haeberlen, Linh Thi Xuan Phan, Micah Sherr, Wenchao Zhou
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Publication number: 20160211710Abstract: In one possible embodiment, a magnet array for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators located at poles on the reinforcing side of the array.Type: ApplicationFiled: January 12, 2016Publication date: July 21, 2016Applicant: AeroVironment, Inc.Inventors: Bart Dean HIBBS, Bang Xuan PHAN
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Patent number: 9270154Abstract: In one possible embodiment, a magnet array for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators located at poles on the reinforcing side of the array.Type: GrantFiled: September 23, 2009Date of Patent: February 23, 2016Assignee: AeroVironment, Inc.Inventors: Bart Dean Hibbs, Bang Xuan Phan
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Publication number: 20100181858Abstract: In one possible embodiment, a magnet array for a motor is provided which has an array of permanent magnets being arranged such that flux from the permanent magnets reinforce on one side of the array and substantially cancel on an opposite side of the array, the array further includes flux concentrators located at poles on the reinforcing side of the array.Type: ApplicationFiled: September 23, 2009Publication date: July 22, 2010Applicant: AeroVironment, Inc.Inventors: Bart Dean Hibbs, Bang Xuan Phan
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Publication number: 20100119578Abstract: A unique method and coatings are provided to promote/allow early stage tissue encapsulation/endothelization of medical devices while effectively controlling excessive tissue buildup by eluting antiproliferative therapeutic agent within a body of a patient. The method involves using a therapeutic agent that suppresses excessive extracellular matrix proliferation and allows/promotes thin tissue healing/encapsulation/endothelization of the device. Optimized timing of onset of elution to match onset of excessive extracellular matrix proliferation for maximum effectiveness is achieved by delay barrier with biochemical switch.Type: ApplicationFiled: November 5, 2009Publication date: May 13, 2010Applicant: SPECIALIZED VASCULAR TECHNOLOGIES, INC.Inventors: John Thao To, Charles M. Blaha, Loc Xuan Phan
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Publication number: 20090253050Abstract: Described are holographic storage mediums and method of making holographic storage mediums. The holographic storage mediums may have write components that bind to the matrix to form a pattern in the media. The holographic storage mediums may also be rewriteable.Type: ApplicationFiled: April 17, 2009Publication date: October 8, 2009Applicant: InPhase Technologies, Inc.Inventors: Timothy TRENTLER, Melinda Schnoes, Michael Coles, Xuan Phan
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Patent number: 7521154Abstract: Described are holographic storage mediums and method of making holographic storage mediums. The holographic storage mediums may have write components that bind to the matrix to form a pattern in the media. The holographic storage mediums may also be rewriteable.Type: GrantFiled: April 11, 2003Date of Patent: April 21, 2009Assignee: Inphase Technologies, Inc.Inventors: Timothy Trentler, Melinda Schnoes, Michael Coles, Xuan Phan
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Publication number: 20050259303Abstract: A novel photoimageable system for a two-chemistry system containing liquid photoreactive asymmetric acrylate compound containing sulfur, aromatic moieties, and optionally bromine, and an aluminum salt compound is disclosed. The photoimageable system has high dynamic range (M/#) and sensitivity and unexpectedly high temperature and high humidity resistance. The photoimageable system retains its dynamic range when exposed to 60° C. for 4 weeks while a composition without the aluminum salt compound lost 75% of its dynamic range under similar exposure conditions. In one embodiment, 2-10 weight % of a thio-butylacrylate dissolved in a two-component urethane matrix containing 0.002 to 1 weight % of the aluminum salt compound showed a dynamic range of greater than 5 for a 200 microns thick sample and retained more than 80% of the dynamic range after 4 weeks exposure at 60° C.Type: ApplicationFiled: May 29, 2003Publication date: November 24, 2005Inventors: Songvit Setthachayanon, Xuan Phan, Mark Michaels, Benjamin Ihas
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Patent number: 6795138Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.Type: GrantFiled: January 11, 2001Date of Patent: September 21, 2004Assignee: SiPix Imaging, Inc.Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
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Patent number: 6784953Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.Type: GrantFiled: March 11, 2003Date of Patent: August 31, 2004Assignee: SiPix Imaging, Inc.Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li
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Publication number: 20040027625Abstract: Described are holographic storage mediums and method of making holographic storage mediums. The holographic storage mediums may have write components that bind to the matrix to form a pattern in the media. The holographic storage mediums may also be rewriteable.Type: ApplicationFiled: April 11, 2003Publication date: February 12, 2004Applicant: INPHASE TECHNOLOGIESInventors: Timothy Trentler, Melinda Schnoes, Michael Coles, Xuan Phan
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Publication number: 20030169387Abstract: This invention relates to liquid crystal (LC) displays comprising cells of well-defined shape, size and aspect ratio which cells are filled with a liquid crystal composition preferably containing dichroic dye(s), and novel processes for their manufacture.Type: ApplicationFiled: March 11, 2003Publication date: September 11, 2003Inventors: Rong-Chang Liang, Scott C-J Tseng, Xuan Phan, Ying-Syi Li, Weijin Li