Touch control apparatus and associated selection method

摘要

A touch control apparatus includes a first light source, a first sensor, a second light source, a second sensor and a controller. An associated selection method includes following steps. The first and the second light sources are driven to respectively generate a first and a second plane lights. Both the first and the second plane light are reflected by at least two touch points. A left reflected light distribution is sensed and transformed into multiple left depth parameters by the first sensor, and a right reflected light distribution is sensed and transformed into multiple right depth parameters by the second sensor. Correspondingly, positions of the at least two touch points are selected from the candidate touch points according to the left and right depth parameters.

主权项

1. A touch control apparatus, for determining touch points corresponding to at least two objects from a plurality of candidate touch positions, the apparatus comprising:
a display panel; a first light source, located at a left side of the display panel, for generating a first plane light, which is reflected by the at least two objects to form a left reflected light distribution; a first sensor, disposed at the display panel, for sensing and transforming the left reflected light distribution into a plurality of left depth parameters, wherein the plurality of left depth parameters are respectively corresponding to relative position between the at least two objects and the first sensor; a second light source, located at a right side of the display panel, for generating a second plane light, which is reflected by the at least two objects to form a right reflected light distribution; a second sensor, disposed at the display panel, for sensing and transforming the right reflected light distribution into a plurality of right depth parameters, wherein the plurality of right depth parameters are respectively corresponding to relative position between the at least two objects and the second sensor; and a controller, electrically coupled to the first sensor and the second sensor, for selecting touch points corresponding to the at least two objects from the plurality of candidate touch positions according to the plurality of left depth parameters and the plurality of right depth parameters.