US 2010/0141607 A1 · APPARATUS AND METHOD FOR RECOGNIZING MULTI TOUCH POINT

Abstract

The present invention relates to an apparatus and method for recognizing multi touch points. When touch input units are touched at the same time by a plurality of touch units, a plurality of sensors sense vibration signals generated from each touch point and measures intersection points from distance information of signals combined according to an input sequence to recognize positions of each touch point. The present invention can accurately recognize the coordinates of the touch points using a simple structure that the sensors are disposed at the edges of the touch input devices and thus, achieves a rapid response. In addition, with the present invention, it can recognize the coordinates of the touch points without limiting the size of the touch panel and when the touch points are generated at the same time, can accurately and rapidly recognize all the plurality of touch points.

Claims16

Dependent claims

An apparatus for recognizing multi touch points comprising:

touch input units;
a vibration sensing unit including a plurality of sensors that are disposed on the touch input units and sense vibration signals generated from each touch point when the touch input units are simultaneously touched by a plurality of touch units;
a distance measurement unit that measures a distance between the plurality of sensors and each touch point from each vibration signal sensed by the plurality of sensors;
and
a touch point recognition unit that measures intersection points of each vibration signal according to the distance information measured by the distance measurement unit and recognizes positions of each touch points from the measured intersection points.

2 more elements

Dependencies are inferred from the claim text.

Apparatus and method for recognizing multi touch point

Life of this patent

Apparatus and method for recognizing multi touch point

Life of this patent

Abstract

Claims16