On a substrate formed or resting display arrangement

Details On a substrate formed or resting display arrangement On a substrate formed or resting display arrangement

2010-09-19

2011-11-29

Shalwala, Bipin (Department: 2629)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Touch panel

C178S018090

Reexamination Certificate

active

08068101

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.

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