The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 04, 2014
Filed:
Jun. 22, 2009
John S. Moore, Middleton, WI (US);
Mark Spychalla, Madison, WI (US);
Victor W. Marsh, Fitchburg, WI (US);
John S. Moore, Middleton, WI (US);
Mark Spychalla, Madison, WI (US);
Victor W. Marsh, Fitchburg, WI (US);
WSI Corporation, Andover, MA (US);
Abstract
An apparatus for tracking a pointing device in use by a foreground subject in a sequence of video fields having a foreground component and a background component, where the pointing device is the leftmost or rightmost object within the foreground component. The apparatus determines the boundaries of a cropped video field within each of the video fields and determines a pixel value and scan line representing the leftmost and rightmost positions of the foreground subject and pointing device for that cropped video field. The apparatus determines the centerline of the foreground subject for each cropped video field, and using the centerline, determines whether the pointing device is on the right side of the cropped video field or the left side of the cropped video field. The position of the pointing device is stored after receipt of a signal generated by the foreground subject.