Patents by Inventor Chon-In Wu

Chon-In Wu 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).

  • Footprint location system
    Patent number: 7671734
    Abstract: A footprint location system installed on footwear is disclosed. A user simply has to wear the shoes to track his/her locations without any setup or calibration efforts. The footprint location system measures and tracks the displacement vectors along a trail of footprints. The position of a user can be determined by summing up the current and all previous displacement vectors. In addition to being infrastructure-free, the footprint location method does not have problems found in existing indoor location systems, such as obstacles, multi-path effects, signal noises, signal interferences, and dead spots.
    Type: Grant
    Filed: February 23, 2007
    Date of Patent: March 2, 2010
    Assignee: National Taiwan University
    Inventors: Hao-Hua Chu, Shun-Yuan Yeh, Chon-In Wu, Kenji Okuda
  • FOOTPRINT LOCATION SYSTEM
    Publication number: 20080204223
    Abstract: A footprint location system installed on footwear is disclosed. A user has to wear the shoes to track his/her locations without any set up or calibration efforts. The footprint location system measures and tracks the displacement vectors along a trail of footprints. The position of a user can be determined by summing up the current and all previous displacement vectors. In addition to being infrastructure-free, the footprint location method does not have problems found in existing indoor location systems, such as obstacles, multi-path effects, signal noises, signal interferences, and dead spots.
    Type: Application
    Filed: February 23, 2007
    Publication date: August 28, 2008
    Inventors: Hao-Hua Chu, Shun-Yuan Yeh, Chon-In Wu, Kenji Okuda