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:
Dec. 07, 2010
Filed:
Dec. 28, 2006
Peter Milford, Los Gatos, CA (US);
Larry Lynch, Los Gatos, CA (US);
Richard Freeman, San Carlos, CA (US);
Peter Milford, Los Gatos, CA (US);
Larry Lynch, Los Gatos, CA (US);
Richard Freeman, San Carlos, CA (US);
LeapFrog Enterprises, Inc., Emeryville, CA (US);
Abstract
A peripheral interface device for determining the color of a surface, where the surface color may then be used to determine device position and identify objects. Embodiments provide a device capable of directing different colors of light (e.g., red, green and blue) onto a surface and measuring relative intensities of the reflected colors to determine the color of the surface. The reflection and measurement of each color may be performed separately. Alternatively, composite-colored light may be directed at the surface, which may then be filtered to extract the different colors and enable measurement of their relative intensities. As such, the device can detect regions of a given color and regions of different shades of the same color, which may then be used to determine the position of the device and/or identify an object.