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. 20, 2017
Filed:
Mar. 25, 2014
Neonode Inc., Santa Clara, CA (US);
Magnus George Goertz, Lidingo, SE;
Neonode Inc., San Jose, CA (US);
Abstract
Touch screen apparatus, including a display unit including a touch surface, a number of light pulse emitting units for emitting light pulses over and across the touch surface, a number of light pulse receiving units for measuring amounts of light received from the light pulse emitting units, circuitry for selectively activating the light pulse emitting units and the light pulse receiving units, and a calculating unit to control the circuitry to provide a low-frequency idle mode and a high-frequency active mode, wherein only one of the light pulse emitting units and one of the light pulse receiving units are activated in the idle mode, and to determine that a light pulse in the idle mode is broken, based on the measured amounts of light received at the one receiving unit.