Patents by Inventor Chiayee Steven Chang

Chiayee Steven Chang 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).

  • GPS-BASED POSITIONING SYSTEM FOR MOBILE GPS TERMINALS
    Publication number: 20090033553
    Abstract: The present invention discloses a GPS system that uses call-processor intelligence to determine the mode of operation of a GPS receiver located in a GPS terminal. The modes are selected based on the availability of network facilities, the GPS information that can be acquired, or user input requirements.
    Type: Application
    Filed: February 18, 2008
    Publication date: February 5, 2009
    Applicants: SiRF Technology, Inc., Matsushita Electric Works, Ltd.
    Inventors: Ikuo Tusjimoto, Junichi Suzuki, Chiayee Steven Chang, Lionel Jacques Garin, Ashutosh Pande