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:
Jun. 16, 2015
Filed:
Mar. 28, 2013
Research IN Motion Limited, Waterloo, CA;
Iouri Petrovitch Besperstov, Innisfil, CA;
BlackBerry Limited, Waterloo, Ontario, CA;
Abstract
An electronic device is configured to determine a location of a stylus with respect to a display screen dependent upon first and second timing signals. A change in state of a reference pixel cell is detected using a photodetector located in close proximity to the reference pixel cell and a change in state of a pixel cell in proximity to the stylus, in response to a stylus photodetector signal received from a photodetector of the stylus. The location of the stylus with respect to the display screen is determined from the time difference between the change in state of the reference pixel cell and the change in state of the pixel cell in proximity to the stylus.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile