Patents by Inventor Chi Man Ung

Chi Man Ung 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).

  • Apparatus For Determining The Location Of A Pointer Within A Region Of Interest
    Publication number: 20070236454
    Abstract: An apparatus for detecting a pointer within a region of interest includes a first reflective element extending along a first side of the region of interest and reflecting light towards the region of interest. A second reflective element extends along a second side of the region of interest and reflects light towards the region of interest. The second side is joined to the first side to define a first corner. A non-reflective region generally in the plane of at least one of the first and second reflective elements is adjacent the first corner. At least one imaging device captures images of the region of interest including reflections from the first and second reflective elements.
    Type: Application
    Filed: June 13, 2007
    Publication date: October 11, 2007
    Applicant: SMART TECHNOLOGIES, INC.
    Inventors: CHI MAN UNG, David Booth, Stephen Worthington, Mark Fletcher, Roberto Sirotich
  • Apparatus for determining the location of a pointer within a region of interest
    Publication number: 20050078095
    Abstract: An apparatus for detecting a pointer within a region of interest includes a first reflective element extending along a first side of the region of interest and reflecting light towards the region of interest. A second reflective element extends along a second side of the region of interest and reflects light towards the region of interest. The second side is joined to the first side to define a first corner. A non-reflective region generally in the plane of at least one of the first and second reflective elements is adjacent the first corner. At least one imaging device captures images of the region of interest including reflections from the first and second reflective elements.
    Type: Application
    Filed: October 9, 2003
    Publication date: April 14, 2005
    Inventors: Chi Man Ung, David Booth, Stephen Worthington, Mark Fletcher, Roberto Sirotich