Stereo light sensor to resolve the multi-touch in the touch detection system

摘要

How to determine which of the potential points and optical touch detection system having an optical sensor of the stereo pairs at least two to be used for [Problems] respectively to identify a set of potential points is whether a valid touch point . The optical sensor pairs [MEANS FOR SOLVING PROBLEMS] The first is used to identify the potential points of the first set of optical sensors of the second pair is used to identify the potential points of the second set be. Then, the comparison between the potential points of the second set and the potential points of the first set, that is, each potential point pair potential point pair, and the second set of potential points from the first set I have a potential point of from. Each potential point pairs are examined to determine the distance comprised between potential points. Correct touch points is identified by selecting a potential point pair having a minimum distance comprised between potential points. By using the optical sensors of the two pairs, the total number of potential point pairs that need to be examined to determine the correct touch points is reduced, thus, the necessary computational analysis is at least reduced. [Selection Figure Figure 2