Patents by Inventor Xiaohua Yu

Xiaohua Yu 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).

  • Super regenerative receiver and method of saving power of the same
    Patent number: 8170523
    Abstract: A low power super regenerative receiver and a method of reducing the power consumption of the low power super regenerative receiver are provided. The super regenerative receiver includes: an oscillator having a start-up time period starting oscillation that varies according to an existence of an input signal; and a power controller supplying power within the start-up time period of the oscillator.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: May 1, 2012
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Hoyong Kang, Xiaohua Yu, Ji Eun Kim, Trung Kien Nguyen, Dae Young Yoon, Nae Soo Kim, Cheol Sig Pyo, Seok Kyun Han, Sang Gug Lee
  • CERAMIC COATING AND METHOD OF PREPARATION THEREOF
    Publication number: 20110287167
    Abstract: A ceramic coating with gradient density/porosity and/or incorporated biologically active agents can be fabricated on the surface of substrates, including the surface of implantable medical devices.
    Type: Application
    Filed: July 6, 2011
    Publication date: November 24, 2011
    Inventors: Mei Wei, Haibo Qu, Xiaohua Yu
  • Ceramic coating and method of preparation thereof
    Patent number: 8007854
    Abstract: A ceramic coating with gradient density/porosity and/or incorporated biologically active agents can be fabricated on the surface of substrates, including the surface of implantable medical devices.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: August 30, 2011
    Assignee: The University of Connecticut
    Inventors: Mei Wei, Haibo Qu, Xiaohua Yu
  • WAKE-UP RECEIVER AND WAKE-UP METHOD USING DUTY CYCLING AND POWER OFF TECHNIQUE
    Publication number: 20110006824
    Abstract: Provided is a low-power wake-up receiver that is sensitive to electric waves, by which power consumed by a radio frequency (RF) transceiver of a sensor node in a ubiquitous sensor network (USN) is minimized. A wake-up receiver waking up a main transceiver includes a duty cycle signal generation unit controlling a duty cycle of a duty cycle signal; a burst signal detection unit receiving an input signal including a burst signal and a data signal based on the duty cycle signal, amplifying the input signal, and, if the amplified input signal is the burst signal, outputting a control signal; and a data signal detection unit re-amplifying the amplified input signal based on the control signal, and, if the re-amplified input signal is the data signal, outputting a wake-up signal. Power supplied to the duty cycle signal generation unit is interrupted based on the control signal and power is re-supplied to the duty cycle signal generation unit based on the wake-up signal.
    Type: Application
    Filed: December 3, 2008
    Publication date: January 13, 2011
    Applicants: Electronics and Telecommunications Research Institute, Korea Advanced Institute of Science and Technology
    Inventors: Ho-Yong Kang, Dae-Young Yoon, Trung-kien Nguyen, Ji-Eun Kim, Xiaohua Yu, Nae-Soo Kim, Cheol-Sig Pyo, Seok-Kyun Han, Sang-Gug Lee
  • SUPER REGENERATIVE RECEIVER AND METHOD OF SAVING POWER OF THE SAME
    Publication number: 20090156158
    Abstract: A low power super regenerative receiver and a method of reducing the power consumption of the low power super regenerative receiver are provided. The super regenerative receiver includes: an oscillator having a start-up time period starting oscillation that varies according to an existence of an input signal; and a power controller supplying power within the start-up time period of the oscillator.
    Type: Application
    Filed: December 12, 2008
    Publication date: June 18, 2009
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, INFORMATION AND COMMUNICATIONS UNIVERSITY EDUCATIONAL FOUNDATION
    Inventors: Hoyong Kang, Xiaohua Yu, Ji Eun Kim, Trung Kien Nguyen, Dae Young Yoon, Nae Soo Kim, Cheol Sig Pyo, Seok Kyun Han, Sang Gug Lee
  • CERAMIC COATING AND METHOD OF PREPARATION THEREOF
    Publication number: 20070184299
    Abstract: A ceramic coating with gradient density/porosity and/or incorporated biologically active agents can be fabricated on the surface of substrates, including the surface of implantable medical devices.
    Type: Application
    Filed: January 4, 2007
    Publication date: August 9, 2007
    Inventors: Mei Wei, Haibo Qu, Xiaohua Yu