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. 02, 2018
Filed:
Jul. 30, 2014
Applicant:
Hewlett-packard Development Company, L.p., Houston, TX (US);
Inventor:
Fred Thomas, Fort Collins, CO (US);
Assignee:
Hewlett-Packard Development Company, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 5/00 (2006.01); G06F 3/0354 (2013.01); G06F 3/038 (2013.01); G01J 1/04 (2006.01); G01J 1/08 (2006.01);
U.S. Cl.
CPC ...
G06F 3/03542 (2013.01); G01J 1/0429 (2013.01); G01J 1/0474 (2013.01); G01J 1/0488 (2013.01); G01J 1/08 (2013.01); G06F 3/0386 (2013.01);
Abstract
An apparatus includes a light source to transmit non-visible light pulses strobed at a frequency and a duty cycle. A detector a detector receives a pattern of reflected light from a display in response to the non-visible light pulses. The pattern of reflected light had at least two different polarization states, where the detector determines a spatial location of the detector relative to the display based on discriminating between the at least two polarization states.