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:
Oct. 18, 2011
Filed:
Jan. 23, 2008
Steven Donald Combs, Lexington, KY (US);
Joseph Wade Luciano, Lexington, KY (US);
Steven Donald Combs, Lexington, KY (US);
Joseph Wade Luciano, Lexington, KY (US);
Lexmark International, Inc., Lexington, KY (US);
Abstract
An improvement to a cellular camera phone comprising a source of illumination positioned adjacent to the camera unit and configured to illuminate a portion of an underlying surface within the field of view the camera unit; programming effective to (a) collect a current tracking image frame, (b) compare the current tracking image frame with a prior tracking image frame, (c) compute a relative displacement between the tracking image frames, and (d) store the current tracking image frame as a prior tracking image frame; and a wireless peripheral interface, wherein the wireless peripheral interface communicates the relative displacement to a computer. Also, a method of retrofitting a cellular camera phone to provide wireless mouse functionality comprising the steps of providing an accessory unit for engagement with the cellular phone configured to position a source of illumination adjacent to the camera unit and to illuminate a portion of an underlying surface within the field of view the camera unit; providing the aforedescribed programming, and providing programming to communicate the relative displacement to a computer.