OPTICAL TOUCH APPARATUS AND OPTICAL TOUCH METHOD

摘要

An optical touch apparatus including a light source module, two optical sensing modules and a processing unit is provided. The light source module provides a touch light source for a touch area. The optical sensing modules are disposed corresponding to two corners of the touch area. The processing unit is coupled to the light source module and the optical sensing modules, and controls the light source module to provide the touch light source in a first touch mode and a second touch mode and stop providing the touch light source in a third touch mode. Each of the optical sensing modules continuously senses and outputs a plurality of sensing signals. The processing unit determines a plurality of touching features of the sensing signals respectively to calculate positions of a plurality of touching objects on the touch area. An optical touch method is also provided.

主权项

1. An optical touch apparatus, comprising:
a light source module providing a touch light source for a touch area; two optical sensing modules disposed corresponding to two corners of the touch area; and a processing unit coupled to the light source module and the optical sensing modules, wherein the processing unit controls the light source module to provide the touch light source in a first touch mode and a second touch mode, and controls the light source module to stop providing the touch light source in a third touch mode, each of the optical sensing modules continuously senses and outputs a plurality of sensing signals in the first touch mode, the second touch mode and the third touch mode, and the processing unit determines a plurality of touching features of the sensing signals respectively according to the first touch mode, the second touch mode and the third touch mode to calculate positions of a plurality of touching objects on the touch area.