Patents by Inventor Alexander TU
Alexander TU 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: 20240127683Abstract: In an example method, a mobile device obtains a signal indicating an acceleration measured by a sensor over a time period. The mobile device determines an impact experienced by the user based on the signal. The mobile device also determines, based on the signal, one or more first motion characteristics of the user during a time prior to the impact, and one or more second motion characteristics of the user during a time after the impact. The mobile device determines that the user has fallen based on the impact, the one or more first motion characteristics of the user, and the one or more second motion characteristics of the user, and in response, generates a notification indicating that the user has fallen.Type: ApplicationFiled: December 11, 2023Publication date: April 18, 2024Inventors: Xing Tan, Huayu Ding, Parisa Dehleh Hossein Zadeh, Harshavardhan Mylapilli, Hung A. Pham, Karthik Jayaraman Raghuram, Yann Jerome Julien Renard, Sheena Sharma, Alexander Singh Alvarado, Umamahesh Srinivas, Xiaoyuan Tu, Hengliang Zhang, Geoffrey Louis Chi-Johnston, Vivek Garg
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Patent number: 11950083Abstract: Embodiments are disclosed for head tracking state detection based on correlated motion of a source device and a headset communicatively coupled to the source device. In an embodiment, a method comprises: obtaining, using one or more processors of a source device, source device motion data from a source device and headset motion data from a headset; determining, using the one or more processors, correlation measures using the source device motion data and the headset motion data; updating, using the one or more processors, a motion tracking state based on the determined correlation measures; and initiating head pose tracking in accordance with the updated motion tracking state.Type: GrantFiled: June 17, 2021Date of Patent: April 2, 2024Assignee: Apple Inc.Inventors: Xiaoyuan Tu, Margaret H. Tam, Halil Ibrahim Basturk, Alexander Singh Alvarado, Adam S. Howell
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Publication number: 20240101897Abstract: The invention is in the field of nanostructure synthesis. Provided are highly luminescent core/shell nanostructures with zinc fluoride and zinc acetate bound to their surface. Also provided are methods of preparing the nanostructures, films comprising the nanostructures, and devices comprising the nanostructures.Type: ApplicationFiled: March 15, 2023Publication date: March 28, 2024Applicant: Nanosys, Inc.Inventors: Daekyoung KIM, Wenzhou GUO, Alexander TU, Yeewah Annie CHOW, Diego BARRERA, Christian IPPEN, Benjamin NEWMEYER, Ruiqing MA
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Publication number: 20240073478Abstract: The present disclosure relates to systems, methods, and non-transitory computer readable media that utilize deep learning to map query videos to known videos so as to identify a provenance of the query video or identify editorial manipulations of the query video relative to a known video. For example, the video comparison system includes a deep video comparator model that generates and compares visual and audio descriptors utilizing codewords and an inverse index. The deep video comparator model is robust and ignores discrepancies due to benign transformations that commonly occur during electronic video distribution.Type: ApplicationFiled: August 26, 2022Publication date: February 29, 2024Inventors: Alexander Black, Van Tu Bui, John Collomosse, Simon Jenni, Viswanathan Swaminathan
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Publication number: 20230272276Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one population of nanostructures; (b) at least one metal halide bound to the surface of the nanostructures; and (c) at least one metal carboxylate bound to the surface of the nanostructures. The nanostructure compositions have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are methods of preparing the nanostructure compositions. And, nanostructure films and molded articles comprising the nanostructure compositions are also provided.Type: ApplicationFiled: January 9, 2023Publication date: August 31, 2023Applicant: Nanosys, Inc.Inventors: llan JEN-LA PLANTE, Yeewah Annie Chow, John J. Curley, Wenzhou Guo, Alexander Tu, Chunming Wang
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Patent number: 11634629Abstract: The invention is in the field of nanostructure synthesis. Provided are highly luminescent core/shell nanostructures with zinc fluoride and zinc acetate bound to their surface. Also provided are methods of preparing the nanostructures, films comprising the nanostructures, and devices comprising the nanostructures.Type: GrantFiled: July 10, 2020Date of Patent: April 25, 2023Assignee: Nanosys, Inc.Inventors: Daekyoung Kim, Wenzhou Guo, Alexander Tu, Yeewah Annie Chow, Diego Barrera, Christian Ippen, Benjamin Newmeyer, Ruiqing Ma
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Patent number: 11549058Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one population of nanostructures; (b) at least one metal halide bound to the surface of the nanostructures; and (c) at least one metal carboxylate bound to the surface of the nanostructures. The nanostructure compositions have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are methods of preparing the nanostructure compositions. And, nanostructure films and molded articles comprising the nanostructure compositions are also provided.Type: GrantFiled: January 24, 2020Date of Patent: January 10, 2023Assignee: Nanosys, Inc.Inventors: Ilan Jen-La Plante, Yeewah Annie Chow, John J. Curley, Wenzhou Guo, Alexander Tu, Chunming Wang
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Patent number: 11053439Abstract: The invention relates to highly luminescent nanostructures with strong blue light absorbance, particularly core/shell nanostructures comprising an In(1-x)GaxP core and ZnSe and/or ZnS shell layers, wherein 0<x<1. The invention also relates to methods of producing such nanostructures.Type: GrantFiled: February 5, 2020Date of Patent: July 6, 2021Assignee: NANOSYS, INC.Inventors: John J. Curley, Alexander Tu, Wenzhou Guo, Chunming Wang, Christian Ippen, Charles Hotz
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Publication number: 20210013377Abstract: The invention is in the field of nanostructure synthesis. Provided are highly luminescent core/shell nanostructures with zinc fluoride and zinc acetate bound to their surface. Also provided are methods of preparing the nanostructures, films comprising the nanostructures, and devices comprising the nanostructures.Type: ApplicationFiled: July 10, 2020Publication date: January 14, 2021Applicant: Nanosys, Inc.Inventors: Daekyoung KIM, Wenzhou GUO, Alexander TU, Yeewah Annie CHOW, Diego BARRERA, Christian IPPEN, Benjamin NEWMEYER, Ruiqing MA
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Publication number: 20200325396Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides methods of preparing nanostructures using in situ prepared zinc dioleate and/or a metal halide. The nanostructures have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are nanostructures prepared using the methods. And, nanostructure films and molded articles comprising the nanostructures are also provided.Type: ApplicationFiled: April 14, 2020Publication date: October 15, 2020Applicant: Nanosys, Inc.Inventors: Yeewah Annie CHOW, Jason HARTLOVE, Charles HOTZ, Chunming WANG, Wenzhou GUO, Ilan JEN-LA PLANTE, Jason Travis TILLMAN, John J. CURLEY, Christian IPPEN, Alexander TU, Ke GONG, Minghu TU
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Publication number: 20200325395Abstract: The invention relates to highly luminescent nanostructures with strong blue light absorbance, particularly core/shell nanostructures comprising an In(1-x)GaxP core and ZnSe and/or ZnS shell layers, wherein 0<x<1. The invention also relates to methods of producing such nanostructures.Type: ApplicationFiled: February 5, 2020Publication date: October 15, 2020Applicant: NANOSYS, INC.Inventors: John J. CURLEY, Alexander TU, Wenzhou GUO, Chunming WANG, Christian IPPEN, Charles HOTZ
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Publication number: 20200239769Abstract: This disclosure pertains to the field of nanotechnology. The disclosure provides nanostructure compositions comprising (a) at least one population of nanostructures; (b) at least one metal halide bound to the surface of the nanostructures; and (c) at least one metal carboxylate bound to the surface of the nanostructures. The nanostructure compositions have high quantum yield, narrow emission peak width, tunable emission wavelength, and colloidal stability. Also provided are methods of preparing the nanostructure compositions. And, nanostructure films and molded articles comprising the nanostructure compositions are also provided.Type: ApplicationFiled: January 24, 2020Publication date: July 30, 2020Applicant: Nanosys, Inc.Inventors: Ilan JEN-LA PLANTE, Yeewah Annie CHOW, John J. CURLEY, Wenzhou GUO, Alexander TU, Chunming WANG
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Publication number: 20200243713Abstract: The invention is in the field of nanostructure synthesis. Provided are highly luminescent nanostructures, particularly highly luminescent quantum dots, comprising a nanocrystal core and at least two thin shell layers. The nanostructures may have additional shell layers. Also provided are methods of preparing the nanostructures, films comprising the nanostructures, and devices comprising the nanostructures.Type: ApplicationFiled: January 24, 2020Publication date: July 30, 2020Applicant: Nanosys, Inc.Inventors: Christopher SUNDERLAND, Ilan JEN-LA PLANTE, Alexander TU, Chunming WANG, Wenzhou GUO