Patents by Inventor Zhihao Chen

Zhihao Chen 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: 9947108
    Abstract: Panoramic imaging systems and techniques are disclosed. In one aspect, a technique for automatic detecting and tracking of a foreground object includes the steps of: receiving a first set of raw images in an image sequence captured by a panoramic imaging system; stitching, by the panoramic imaging system, the first set of raw images to generate a panoramic image; detecting, by the panoramic imaging system, a foreground object in the panoramic image; tracking, by the panoramic imaging system, a movement of the foreground object in the image sequence; and generating, by the panoramic imaging system, a panoramic video based on the image sequence with tracking the movement of the foreground object.
    Type: Grant
    Filed: May 9, 2016
    Date of Patent: April 17, 2018
    Inventor: Scott Zhihao Chen
  • Publication number: 20170115170
    Abstract: According to embodiments of the present invention, a sensing device is provided. The sensing device includes a sensor arrangement including an optical fiber, and at least one spacer element arranged adjacent to the optical fiber, wherein the optical fiber and the at least one spacer element are adapted to cooperate to receive a force applied to the sensor arrangement to modulate an optical signal propagating in the optical fiber. According to further embodiments of the present invention, a method for sensing a force is also provided.
    Type: Application
    Filed: March 25, 2015
    Publication date: April 27, 2017
    Applicant: Agency for Science, Technology and Research
    Inventors: Zhihao CHEN, Ju Teng TEO, Soon Huat NG, Xiufeng YANG
  • Publication number: 20160089080
    Abstract: Features are disclosed relating to determining an activity in which a user is (or has been) engaged. One such activity is the taking of steps (e.g., walking or running). Some embodiments described herein are directed to accurate detection and counting of steps made by a user wearing a device with step-detection functionality. The accurate step counting can be facilitated by detecting signatures of certain activities, and determining whether to count steps based on an analysis of acceleration data over various intervals and moving windows of time.
    Type: Application
    Filed: June 5, 2015
    Publication date: March 31, 2016
    Inventors: Fang Li, Zhihao Chen, Cheng Cao
  • Publication number: 20150018637
    Abstract: An apparatus, methods and a system for cuffless blood pressure monitoring are provided. The system includes an optical BCG sensor, a PPG sensor, a transceiver and a signal processing device. The BCG sensor optically couples to the subject, acquires BCG signals from the subject, and optically transmits the subject's BCG signals. The PPG sensor optically couples to the subject for acquiring PPG signals from the subject and optically transmits the acquired subject's PPG signals. The transceiver is coupled to the BCG sensor and the PPG sensor for receiving the BCG signals and the PPG signals and generating a BCG electronic signal from the subject's BCG signals and a PPG electronic signal from the subject's PPG signals.
    Type: Application
    Filed: January 14, 2013
    Publication date: January 15, 2015
    Inventors: Zhihao Chen, Soon Huat Ng, Ju Teng Teo, Xiufeng Yang
  • Patent number: 8728894
    Abstract: A method for fabricating an NMOS transistor includes providing a substrate; forming a gate dielectric layer structure on the substrate and forming a gate electrode on the gate dielectric layer structure. The method further includes performing a fluorine ion implantation below the gate dielectric layer and an annealing process in an atmosphere comprising hydrogen or hydrogen plasma. The method also includes forming a source region and a drain region on both sides of the gate electrode before or after the fluorine ion implantation.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: May 20, 2014
    Assignee: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: Yangkui Lin, Zhihao Chen
  • Publication number: 20120214286
    Abstract: A method for fabricating an NMOS transistor includes providing a substrate; forming a gate dielectric layer structure on the substrate and forming a gate electrode on the gate dielectric layer structure. The method further includes performing a fluorine ion implantation below the gate dielectric layer and an annealing process in an atmosphere comprising hydrogen or hydrogen plasma. The method also includes forming a source region and a drain region on both sides of the gate electrode before or after the fluorine ion implantation.
    Type: Application
    Filed: June 28, 2011
    Publication date: August 23, 2012
    Applicant: Semiconductor Manufacturing International (Shanghai) Corporation
    Inventors: YANGKUI LIN, Zhihao Chen
  • Patent number: 7504339
    Abstract: A trench structure in a wafer of semiconductor material and the method of forming the trench structure are described. The trench structure is formed on a semiconductor wafer that has a top surface of slow oxidization rate—slower than that of other major crystallographic planes of the semiconductor material. The trench is etched into the semiconductor wafer. The trench has substantially vertical trench-sidewalls near the top surface, the vertical trench-sidewalls near the top surface containing crystallographic plane that oxidizes at a rate comparable to that of the top surface. An insulating layer is grown on the top surface and on the trench-sidewalls and on corners where sidewall surfaces approach the top surface, the insulating layer at the corners being substantially thicker than at the sidewall adjacent to the corners. The difference in the oxide thickness is due to the faster oxidizing planes exposed at the corners. Finally, the trench is filled with a dielectric material.
    Type: Grant
    Filed: June 1, 2005
    Date of Patent: March 17, 2009
    Assignee: Texas Instruments Incorporated
    Inventors: Zhihao Chen, Freidoon Mehrad, Brian K. Kirkpatrick, Jeff A. White, Edmund G. Russell, Jon Holt, Jason D. Mehigan
  • Publication number: 20070098323
    Abstract: Fiber sensors formed on side-polished fiber coupling ports based on evanescent coupling are described. Such sensors may be configured to measure various materials and may be used to form multi-phase sensing devices. A Bragg grating may be implemented in such sensors to form reflective fiber sensors.
    Type: Application
    Filed: April 11, 2006
    Publication date: May 3, 2007
    Inventors: Bo Pi, Wei-Cheng Lin, Zhihao Chen
  • Patent number: 7087887
    Abstract: Waveguide sensors having a side-polished coupling port at the waveguide cladding to sense a material based on material-specific optical attenuation by evanescent coupling at the coupling port.
    Type: Grant
    Filed: October 29, 2003
    Date of Patent: August 8, 2006
    Assignee: IFOS, Inc.
    Inventors: Bo Pi, Shulai Zhao, Zhihao Chen
  • Patent number: 7068868
    Abstract: Fiber sensors formed on side-polished fiber coupling ports based on evanescent coupling. Such sensors may be configured to measure various materials and may be used to form multi-phase sensing devices.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: June 27, 2006
    Assignee: IFOS, Inc.
    Inventors: Bo Pi, Wei-Cheng Wilson Lin, Zhihao Chen, Shulai Zhao
  • Patent number: 7060964
    Abstract: Fiber sensors formed on side-polished fiber coupling ports based on evanescent coupling are described. Such sensors may be configured to measure various materials and may be used to form multi-phase sensing devices. A Bragg grating may be implemented in such sensors to form reflective fiber sensors.
    Type: Grant
    Filed: February 23, 2004
    Date of Patent: June 13, 2006
    Assignee: IFOS, Inc.
    Inventors: Bo Pi, Wei-Cheng Wilson Lin, Zhihao Chen
  • Publication number: 20050247994
    Abstract: Disclosed is a shallow trench isolation (STI) structure and methods of manufacturing the same. The methods eliminate the requirement for design size adjustments (DSA) in manufacturing the STI structure. Further disclosed is an STI trench liner and methods for the formation thereof by growing a thin oxide layer on shallow isolation trench surfaces while preventing oxide formation on adjacent nitride surfaces, followed by the deposition of, and oxide growth upon, a polysilicon layer.
    Type: Application
    Filed: July 11, 2005
    Publication date: November 10, 2005
    Inventors: Freidoon Mehrad, Zhihao Chen, Shashank Ekbote, Brian Trentman
  • Publication number: 20050208732
    Abstract: A trench structure in a wafer of semiconductor material and the method of forming the trench structure are described. The trench structure is formed on a semiconductor wafer that has a top surface of slow oxidization rate—slower than that of other major crystallographic planes of the semiconductor material. The trench is etched into the semiconductor wafer. The trench has substantially vertical trench-sidewalls near the top surface, the vertical trench-sidewalls near the top surface containing crystallographic plane that oxidizes at a rate comparable to that of the top surface. An insulating layer is grown on the top surface and on the trench-sidewalls and on corners where sidewall surfaces approach the top surface, the insulating layer at the corners being substantially thicker than at the sidewall adjacent to the corners. The difference in the oxide thickness is due to the faster oxidizing planes exposed at the corners. Finally, the trench is filled with a dielectric material.
    Type: Application
    Filed: June 1, 2005
    Publication date: September 22, 2005
    Inventors: Zhihao Chen, Freidoon Mehrad, Brian Kirkpatrick, Jeff White, Edmund Russell, Jon Holt, Jason Mehigan
  • Patent number: 6930018
    Abstract: Disclosed is a shallow trench isolation (STI) structure and methods of manufacturing the same. The methods eliminate the requirement for design size adjustments (DSA) in manufacturing the STI structure. Further disclosed is an STI trench liner and methods for the formation thereof by growing a thin oxide layer on shallow isolation trench surfaces while preventing oxide formation on adjacent nitride surfaces, followed by the deposition of, and oxide growth upon, a polysilicon layer.
    Type: Grant
    Filed: July 16, 2002
    Date of Patent: August 16, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Freidoon Mehrad, Zhihao Chen, Shashank S. Ekbote, Brian Trentman
  • Patent number: 6917093
    Abstract: A trench structure in a wafer of semiconductor material and the method of forming the trench structure are described. The trench structure is formed on a semiconductor wafer that has a top surface of slow oxidization rate—slower than that of other major crystallographic planes of the semiconductor material. The trench is etched into the semiconductor wafer. The trench has substantially vertical trench-sidewalls near the top surface, the vertical trench-sidewalls near the top surface containing crystallographic plane that oxidizes at a rate comparable to that of the top surface. An insulating layer is grown on the top surface and on the trench-sidewalls and on corners where sidewall surfaces approach the top surface, the insulating layer at the corners being substantially thicker than at the sidewall adjacent to the corners. The difference in the oxide thickness is due to the faster oxidizing planes exposed at the corners. Finally, the trench is filled with a dielectric material.
    Type: Grant
    Filed: October 23, 2003
    Date of Patent: July 12, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Zhihao Chen, Freidoon Mehrad, Brian K. Kirkpatrick, Jeff A. White, Edmund G. Russell, Jon Holt, Jason D. Mehigan
  • Patent number: 6912343
    Abstract: Adjustable filters formed in fibers or waveguides based on evanescent coupling, where a coupling layer is formed between a waveguide overlay and a side-polished coupling port on the fiber or waveguide. A control mechanism may be provided to adjust a property of at least one of the waveguide overlay and the coupling layer to adjust the output of the filter.
    Type: Grant
    Filed: October 9, 2002
    Date of Patent: June 28, 2005
    Assignee: Oluma, Inc.
    Inventors: Zhihao Chen, Zheng Chen, Bo Pi
  • Patent number: 6897516
    Abstract: A method of forming a flash memory array structure includes forming a first dielectric layer outwardly from a semiconductor substrate, removing a portion of the first dielectric layer and the substrate to create a trench isolation region, forming a second dielectric layer in the trench isolation region, removing a portion of the second dielectric layer to create an exposed substrate region proximate a bottom of the trench isolation region, doping the exposed substrate region with an n-type dopant, and forming a silicide region in the exposed substrate region.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: May 24, 2005
    Assignee: Texas Instruments Incorporated
    Inventors: Freidoon Mehrad, Suresh Potla, Zhihao Chen
  • Publication number: 20050062127
    Abstract: A trench structure in a wafer of semiconductor material and the method of forming the trench structure are described. The trench structure is formed on a semiconductor wafer that has a top surface of slow oxidization rate—slower than that of other major crystallographic planes of the semiconductor material. The trench is etched into the semiconductor wafer. The trench has substantially vertical trench-sidewalls near the top surface, the vertical trench-sidewalls near the top surface containing crystallographic plane that oxidizes at a rate comparable to that of the top surface. An insulating layer is grown on the top surface and on the trench-sidewalls and on corners where sidewall surfaces approach the top surface, the insulating layer at the corners being substantially thicker than at the sidewall adjacent to the corners. The difference in the oxide thickness is due to the faster oxidizing planes exposed at the corners. Finally, the trench is filled with a dielectric material.
    Type: Application
    Filed: October 23, 2003
    Publication date: March 24, 2005
    Inventors: Zhihao Chen, Freidoon Mehrad, Brian Kirkpatrick, Jeff White, Edmund Russell, Jon Holt, Jason Mehigan
  • Patent number: 6828213
    Abstract: A method of improving shallow trench isolation (STI) gap fill and moat nitride pull back is provided by after the steps of growing a pad oxide, depositing a nitride layer on the pad oxide and the steps of moat patterning, moat etching and moat clean, the steps of growing thermal oxide, deglazing a part of a part of the moat nitride; depositing a thin nitride liner, etching the nitride to form a thin side wall nitride in the STI trench; and performing an oxide Hydroflouric (HF) acid deglazing before STI liner oxidating and depositing oxide to fill the trench.
    Type: Grant
    Filed: February 28, 2003
    Date of Patent: December 7, 2004
    Assignee: Texas Instruments Incorporated
    Inventors: Freidoon Mehrad, Zhihao Chen, Majid M. Mansoori
  • Patent number: D818024
    Type: Grant
    Filed: June 30, 2016
    Date of Patent: May 15, 2018
    Inventor: Zhihao Chen