Infrared Touch Screen
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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Issued Date -
May 19, 2011
app pub date -
Nov 18, 2009
filing date -
Nov 18, 2009
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
A touch screen system comprises the following: a detection area having at least two sides; light transmitters (“LTs”) disposed on the sides; and light receivers (“LRs”) disposed on the sides, wherein the LTs and the LRs are paired where one of the LTs is paired with one of the LRs, forming transmitter-receiver pairs, wherein the transmitter-receiver pairs are positioned on the sides, where the light transmitter and the light receiver of anyone of the transmitter-receiver pairs are disposed on different ones of the sides, wherein selected ones of the transmitter-receiver pairs are partitioned into two or more groups as a function of the respective positions of the transmitter-receiver pairs along the sides, and wherein one of the groups is activated at a given time.
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