Patents by Inventor Chung-Kai Yu

Chung-Kai 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).

  • Method and apparatus for processing radio signals to identify an active system in a coexisting radio network
    Patent number: 8010069
    Abstract: The present invention discloses a method of multiple systems sensing for coexisting radio networks, including: performing energy detection and carrier locking; detecting the fundamental frequencies; and identifying the corresponding active systems from the detected fundamental frequencies and the evaluation of the estimated power spectrum density vector or the estimated trispectrum matrix. Based on the method, an apparatus capable of multiple systems sensing is presented. Furthermore, the present invention also provides an apparatus of multiple systems sensing for coexisting radio networks.
    Type: Grant
    Filed: December 18, 2008
    Date of Patent: August 30, 2011
    Assignee: Mstar Semiconductor, Inc.
    Inventors: Kwang-Cheng Chen, Chung-Kai Yu
  • METHOD AND APPARATUS FOR PROCESSING RADIO SIGNALS TO IDENTIFY AN ACTIVE SYSTEM IN A COEXISTING RADIO NETWORK
    Publication number: 20090258597
    Abstract: The present invention discloses a method of multiple systems sensing for coexisting radio networks, including: performing energy detection and carrier locking; detecting the fundamental frequencies; and identifying the corresponding active systems from the detected fundamental frequencies and the evaluation of the estimated power spectrum density vector or the estimated trispectrum matrix. Based on the method, an apparatus capable of multiple systems sensing is presented. Furthermore, the present invention also provides an apparatus of multiple systems sensing for coexisting radio networks.
    Type: Application
    Filed: December 18, 2008
    Publication date: October 15, 2009
    Inventors: Kwang-Cheng CHEN, Chung-Kai YU