Patents by Inventor Xi TIAN

Xi TIAN 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).

  • Patent number: 12015197
    Abstract: There is provided a metamaterial textile for providing wireless sensor network and method of designing such. The metamaterial textile comprising a sheet of metamaterial textile cut into a comb shape comprising long base with a plurality of metamaterial textile teeth extending along and from the base, wherein a gap is present between every two adjacent teeth, whereby, the metamaterial textile is configured to enable propagation of radio-surface plasmons wave along the metamaterial textile for providing wireless sensor network. The metamaterial textile is configured to control the height of the radio-surface plasmons wave by changing number of the metamaterial textile teeth, and changing dimensions of the metamaterial textile teeth and changing dimensions of the gaps.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: June 18, 2024
    Assignee: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: John Ho, Chee Keong Tee, Xi Tian, Pui Mun Lee
  • Publication number: 20240123253
    Abstract: Wirelessly powered photodynamic therapy devices are disclosed and systems and methods using such devices are also disclosed. In an embodiment, a photodynamic therapy system comprises: an implantable illumination device comprising a light source configured to emit light having a spectrum which overlaps with an absorption peak of an absorption target and a receiver antenna coupled to the light source and configured to extract power from a radiofrequency power signal incident on the implantable illumination device; and a transmitter comprising an antenna, a powering module configured to generate a drive signal which causes the antenna to generate the radiofrequency power signal, and a dosimetry module coupled to the antenna and configured to detect a radiofrequency signal backscattered from the implantable illumination device and determine an indication of the power extracted by the implantable illumination device from the radiofrequency signal backscattered from the implantable illumination device.
    Type: Application
    Filed: December 21, 2023
    Publication date: April 18, 2024
    Applicant: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: John HO, Yong ZHANG, Akshaya BANSAL, Fengyuan YANG, Xi TIAN
  • Patent number: 11896843
    Abstract: Wirelessly powered photodynamic therapy devices are disclosed and systems and methods using such devices are also disclosed. In an embodiment, a photodynamic therapy system comprises: an implantable illumination device comprising a light source configured to emit light having a spectrum which overlaps with an absorption peak of an absorption target and a receiver antenna coupled to the light source and configured to extract power from a radiofrequency power signal incident on the implantable illumination device; and a transmitter comprising an antenna, a powering module configured to generate a drive signal which causes the antenna to generate the radiofrequency power signal, and a dosimetry module coupled to the antenna and configured to detect a radiofrequency signal backscattered from the implantable illumination device and determine an indication of the power extracted by the implantable illumination device from the radiofrequency signal backscattered from the implantable illumination device.
    Type: Grant
    Filed: January 22, 2019
    Date of Patent: February 13, 2024
    Assignee: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: John Ho, Yong Zhang, Akshaya Bansal, Fengyuan Yang, Xi Tian
  • Patent number: 11334967
    Abstract: A method and an image processing device for generating an image filter are proposed. The method includes the following steps. A first image is received and inputted into a pre-trained convolutional neural network (CNN) model, and the image filter corresponding to the first image is obtained based on an output result of the pre-trained CNN model.
    Type: Grant
    Filed: July 30, 2020
    Date of Patent: May 17, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Xin Huang, Fan Wang, Xi Tian
  • Publication number: 20220036510
    Abstract: A method and an image processing device for generating an image filter are proposed. The method includes the following steps. A first image is received and inputted into a pre-trained convolutional neural network (CNN) model, and the image filter corresponding to the first image is obtained based on an output result of the pre-trained CNN model.
    Type: Application
    Filed: July 30, 2020
    Publication date: February 3, 2022
    Applicant: Novatek Microelectronics Corp.
    Inventors: Xin Huang, Fan Wang, Xi Tian
  • Publication number: 20210344109
    Abstract: There is provided a metamaterial textile for providing wireless sensor network and method of designing such. The metamaterial textile comprising a sheet of metamaterial textile cut into a comb shape comprising long base with a plurality of metamaterial textile teeth extending along and from the base, wherein a gap is present between every two adjacent teeth, whereby, the metamaterial textile is configured to enable propagation of radio-surface plasmons wave along the metamaterial textile for providing wireless sensor network. The metamaterial textile is configured to control the height of the radio-surface plasmons wave by changing number of the metamaterial textile teeth, and changing dimensions of the metamaterial textile teeth and changing dimensions of the gaps.
    Type: Application
    Filed: October 17, 2019
    Publication date: November 4, 2021
    Inventors: John HO, Chee Keong TEE, Xi TIAN, Pui Mun LEE
  • Publication number: 20210060350
    Abstract: Wirelessly powered photodynamic therapy devices are disclosed and systems and methods using such devices are also disclosed. In an embodiment, a photodynamic therapy system comprises: an implantable illumination device comprising a light source configured to emit light having a spectrum which overlaps with an absorption peak of an absorption target and a receiver antenna coupled to the light source and configured to extract power from a radiofrequency power signal incident on the implantable illumination device; and a transmitter comprising an antenna, a powering module configured to generate a drive signal which causes the antenna to generate the radiofrequency power signal, and a dosimetry module coupled to the antenna and configured to detect a radiofrequency signal backscattered from the implantable illumination device and determine an indication of the power extracted by the implantable illumination device from the radiofrequency signal backscattered from the implantable illumination device.
    Type: Application
    Filed: January 22, 2019
    Publication date: March 4, 2021
    Applicant: NATIONAL UNIVERSITY OF SINGAPORE
    Inventors: John HO, Yong ZHANG, Akshaya BANSAL, Fengyuan YANG, Xi TIAN
  • Patent number: 10448043
    Abstract: A motion estimation method and a motion estimator are provided. The motion estimation method includes the following steps of for each respective block of the current frame, selecting a candidate set associated with the current frame and a previous frame, and determining a motion vector according to the candidate set for the each respective block of the current frame. The candidate set includes at least one spatial candidate block in the current frame and temporal candidate blocks in the previous frame. The step of selecting the candidate set includes: selecting the spatial candidate block directly adjacent to the each respective block from the current frame and selecting the plurality of temporal candidate blocks directly adjacent to a reference block from the previous frame.
    Type: Grant
    Filed: December 28, 2016
    Date of Patent: October 15, 2019
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Pengyuan Hu, Xi Tian, Yen-Sung Chen, Yuanjia Du
  • Publication number: 20190234937
    Abstract: Described herein are in vitro cancer metastasis models that recapitulate biological facets of organ specificity as indicated by the behavior of human colorectal cancer cells when on substrata of liver and lung biomatrix scaffolds, organ-specific matrix extracts generated by novel decellularization strategies. Tumor cells spontaneously formed colonies that mimicked in vivo metastatic lesions in terms of histology, biology and genetic and other phenotypic traits. Not to be bound by theory, it is postulated that responses of tumors to radiation or chemotherapeutic agents proved dependent on the matrix substratum used; thus, thus the scaffolds are believed to provide a powerful tool for cancer research and diagnosis.
    Type: Application
    Filed: July 11, 2017
    Publication date: August 1, 2019
    Applicant: The University of North Carolina at Chapel Hill
    Inventors: Andrew Zhuang Wang, Xi Tian, Lola M. Reid
  • Patent number: 10225587
    Abstract: A motion estimation method for a frame rate converter includes generating a plurality of unidirectional motion vectors (MVs) based on a first original frame and a second original frame; classifying each of the plurality of unidirectional MVs as a reliable MV or a mismatch MV; mapping the reliable MV onto one of a plurality of blocks of an interpolation frame; classifying each of the plurality of blocks as a high confidence block or a low confidence block based on whether there is at least one reliable MV mapped onto the block; and determining an assigned MV for each of the high confidence block by selecting one of the at least one reliable MV mapped onto the high confidence block.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 5, 2019
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Xi Tian, Xin Huang, Pengyuan Hu
  • Publication number: 20180184107
    Abstract: The invention provides an apparatus and a method for motion estimation. The motion estimation apparatus includes a candidate set generation circuit and a motion vector (MV) determination circuit. The candidate set generation circuit selects to add motion vectors of adjacent blocks into a motion vector candidate set of a current block of a current frame. The current block and one of the adjacent blocks belong to the same row (or the same column), and the one of the adjacent blocks is a block of the current frame or a block of a previous frame. The motion vector determination circuit is coupled to the candidate set generation circuit to receive the motion vector candidate set. The motion vector determination circuit determines the motion vector of the current block of the current frame according to the motion vector candidate set.
    Type: Application
    Filed: August 11, 2017
    Publication date: June 28, 2018
    Applicant: Novatek Microelectronics Corp.
    Inventors: Pengyuan Hu, Xi Tian, Yen-Sung Chen, Yuan-Jia Du
  • Publication number: 20180184106
    Abstract: A motion estimation method is provided which includes for each respective block of the current frame, selecting a candidate set associated with the current frame and a previous frame, the candidate set comprising at least one spatial candidate block in the current frame and a plurality of temporal candidate blocks in the previous frame, wherein the step of selecting the candidate set comprises: selecting the at least one spatial candidate block directly adjacent to the each respective block from the current frame; and selecting the plurality of temporal candidate blocks directly adjacent to a reference block from the previous frame; and determining a motion vector according to the candidate set for the each respective block of the current frame.
    Type: Application
    Filed: December 28, 2016
    Publication date: June 28, 2018
    Inventors: PENGYUAN HU, XI TIAN, Yen-Sung Chen, Yuanjia DU
  • Patent number: 9566654
    Abstract: An electrical discharge machining tool of a ring sector for an aircraft turbomachine is provided. The ring sector includes an abradable member and a support element to which the abradable member is fixed; and one or more gripping holes opening on a radially outer surface of a central body of the support element. The machining tool includes at least two machining sets chosen from groove, notch, opening, length-cutting, or abradable element electro-machining sets. The machining tool also has a gripping device for the ring sector by the gripping holes. The gripping device is configured to move the ring sector from one of the electro-machining sets to another of the electro-machining sets.
    Type: Grant
    Filed: December 11, 2014
    Date of Patent: February 14, 2017
    Assignee: SNECMA
    Inventors: Bruno Giardini, Antoine Marty, Xi Tian, Julien Arnould, Etienne Canelle, Frederic Hascoet, Matthieu Lebastard
  • Publication number: 20150174676
    Abstract: The invention relates to an electrical discharge machining tool of a ring sector for an aircraft turbomachine. The ring sector comprises an abradable member and a support element to which the abradable member is fixed. The ring sector comprises one or more gripping holes opening on a radially outer surface of a central body of the support element. The machining tool comprises at least two machining sets chosen from groove, notch, opening, length-cutting, or abradable element electro-machining sets. The machining tool also has a gripping device for the ring sector by means of the gripping holes. The gripping device is configured to move the ring sector from one of the electro-machining sets to another of the electro-machining sets.
    Type: Application
    Filed: December 11, 2014
    Publication date: June 25, 2015
    Applicant: SNECMA
    Inventors: Bruno GIARDINI, Antoine MARTY, Xi TIAN, Julien ARNOULD, Etienne CANELLE, Frederic HASCOET, Matthieu LEBASTARD
  • Patent number: 8470363
    Abstract: An antihypertensive pharmaceutical composition is provided, which contains levamlodipine or a pharmaceutically acceptable salt thereof, and indapamide. In the present invention, levamlodipine and indapamide are administrated in combination for treating hypertension, a good synergistic antihypertensive effect is achieved, and the edema side effect due to sodium and water retention caused when levamlodipine is administrated alone and the side effect of glucose metabolism interference caused when indapamide is administrated alone are mitigated.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: June 25, 2013
    Assignee: Shihuida Pharmaceuticals Group (JILIN) Ltd.
    Inventors: Yan ling Yang, Chuan xiao Xue, Xi tian Zhang, Huan Li, Sen tao Song
  • Publication number: 20120041035
    Abstract: A levamlodipine compound pharmaceutical composition is provided, which contains levamlodipine or a pharmaceutically acceptable salt thereof, and chlorthalidone. In the present invention, levamlodipine and chlorthalidone are administrated in combination for treating hypertension, a high synergistic antihypertensive effect is achieved, and the edema side effect due to sodium and water retention caused when levamlodipine is administrated alone is mitigated. In addition, levamlodipine increases insulin sensitivity of an organism, and resists the side effect of increase in blood glucose level caused by chlorthalidone. The pharmaceutical composition of levamlodipine and chlorthalidone overcomes the disadvantage that levamlodipine takes effects slowly in hypertension repression.
    Type: Application
    Filed: June 17, 2010
    Publication date: February 16, 2012
    Applicant: SHIHUIDA PHARMACEUTICALS GROUP (JILIN) LTD
    Inventors: Yan ling Yang, Chuan xiao Xue, Xi tian Zhang, Wei Xu, Yan Zhang
  • Publication number: 20110263660
    Abstract: An antihypertensive pharmaceutical composition is provided, which contains levamlodipine or a pharmaceutically acceptable salt thereof, and indapamide. In the present invention, levamlodipine and indapamide are administrated in combination for treating hypertension, a good synergistic antihypertensive effect is achieved, and the edema side effect due to sodium and water retention caused when levamlodipine is administrated alone and the side effect of glucose metabolism interference caused when indapamide is administrated alone are mitigated.
    Type: Application
    Filed: June 17, 2010
    Publication date: October 27, 2011
    Applicant: SHIHUIDA PHARMACEUTICALS GROUP (JILIN) LTD
    Inventors: Yan Ling Yang, Chuan Xiao Xue, Xi Tian Zhang, Huan Li, Sen Tao Song
  • Patent number: 5184933
    Abstract: A mini-size universal hydraulic excavator capable of performing independently many operating processes, such as digging, pushing, grabbing, drilling and chipping, having essentially three main sections, namely, a chassis carrying traveling device pivotally connected with an earth-moving means, a complete swivel upper carriage provided with a power generator and a driver's seat, and an excavating arm having a boom, a bucket arm, and a bucket. A hydraulic chipper can be connected to the main machine without the necessity of removal of the bucket and the earth-moving means, so that chipping and site clearing can be carried on simultaneously solely by one single machine. A backhoe bucket carrying a scraper employs a multi-bar linkage mechanism having a bucket body, a scraper, and a bucket arm so that the bucket can have sufficient bucket capacity in a relatively greater excavating revolving angle range.
    Type: Grant
    Filed: February 27, 1991
    Date of Patent: February 9, 1993
    Assignee: Yulin Diesel Engine General Works
    Inventors: Zhong Pei-qian, Zheng Wen-kang, Xu Xi-tian, Liang Jian-he, Zhou Dong-shen, Yang Jun-zhi