Patents by Inventor Tsu Yi Chao

Tsu Yi Chao 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).

  • LOCUS SMOOTHING METHOD AND NAVIGATION DEVICE USING THE SAME
    Publication number: 20100103191
    Abstract: A locus smoothing method processes a current estimated displacement according to a predetermined number of previous output smoothed displacements. The locus smoothing method includes the steps of: accumulating a predetermined number of previous output smoothed displacements to produce an accumulated displacement and recording a last output smoothed displacement; estimating a current estimated displacement; forming a digital filter according to the accumulated displacement, the last output smoothed displacement and the current estimated displacement; processing the current estimated displacement with the digital filter to produce a current smoothed displacement; and transmitting the current smoothed displacement to an image display. The present invention further provides a navigation device having smooth locus.
    Type: Application
    Filed: August 27, 2009
    Publication date: April 29, 2010
    Applicant: PIXART IMAGING INC.
    Inventors: Hsin Chia Chen, Tzung Min Su, Tsu Yi Chao