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:
Apr. 07, 2015
Filed:
Jun. 27, 2011
Amrinder Pal Singh Saini, Union City, CA (US);
Amrinder Pal Singh Saini, Union City, CA (US);
Amazon Technologies, Inc., Reno, NV (US);
Abstract
Some implementations include a light-based touch sensing system in which a first type of light is projected across a display surface for detection by one or more light sensors. When a user's finger blocks the light from being delivered to a light sensor, a location of the finger with respect to the display can be determined. At least one light source may be selectively operable to emit a second type of light, different from the first type of light, to illuminate the display surface with visible light. In some implementations, a dual-mode light source is selectively operable to emit the first type of light, the second type of light, or both the first type and second type of light. In other implementations, a first light source emits the first type of light and a second light source emits the second type of light through the same light guide.