Touch module and touch detecting method

摘要

A touch module including an image sensing unit, a plurality of first reflecting elements, a plurality of second reflecting elements, and a processing unit is provided. The image sensing unit is positioned in correspondence with a first corner of a sensing area and capable of capturing a sensing image to output an image signal. The first reflecting elements and the second reflecting elements respectively have different first angles and different second angles, are disposed along a first and the second edges of the sensing area respectively, and are capable of reflecting a touch object to form a first and a second image in the sensing image. A second corner formed by the first the second edges is diagonal to the first corner. The processing unit is coupled the image sensing unit and receives the image signal to determine the position of the touch object relative to the sensing area.

主权项

1. A touch module comprising:
an image sensing unit positioned in correspondence with a first corner of a sensing area and capable of capturing a sensing image to output an image signal; a plurality of first reflecting elements disposed along a first edge of the sensing area, each of the first reflecting elements having a different first angle, and one of the first reflecting elements capable of reflecting an image of a touch object to the image sensing unit for forming a first image in the sensing image; a plurality of second reflecting elements disposed along a second edge of the sensing area, each of the second reflecting elements having a different second angle, and one of the second reflecting elements capable of reflecting the image of the touch object to the image sensing unit for forming a second image in the sensing image, a second corner formed by the first edge and the second edge being diagonal to the first corner; and a processing unit coupled to the image sensing unit and capable of receiving the image signal and determine the position of the touch object relative to the sensing area based on the image signal.