On a substrate formed or resting display arrangement
US8068101B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 2010 |
| Grant date | Nov 29, 2011 |
| Priority date | — |
| Expiry date | Sep 19, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0266
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A touch screen apparatus, including a display unit including a touch surface, a number of light pulse emitting units, connecting to the display unit, for emitting light pulses over and across the touch surface, a number of light pulse receiving units, connected to the display unit, for measuring amounts of light received from the light pulse emitting units, circuitry, connected to the light pulse emitting units and to the light pulse receiving units, for selectively activating, at any given time, one or more of the light pulse emitting units and the light pulse receiving units, wherein the circuitry activates three or more light pulse emitting units and only one light pulse receiving unit during a designated time interval, and a calculating unit, connected to the light pulse receiving units, to determine the location of an object touching the touch surface, based on the measured amounts of light received at the receiving units.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.