Optical touch control device and coordinate determination method for determining touch coordinate

摘要

An optical touch control device includes a touch zone, an optical module, including a light source and a sense module for emitting a light signal to a touch object within the touch zone and obtaining an image data of the touch object via the sense module, and a calculation module coupled to the optical module for determining a touch coordinate of the touch object relative to the touch zone according to a pulse of the image data, wherein the pulse comprises a position parameter and a value parameter.

主权项

1. An optical touch control device comprising:
a touch zone; a frame for surrounding the touch zone; an optical module, disposed on a central zone of a side of the frame, comprising a single light source and a sense module for emitting a light signal from the single light source to a touch object within the touch zone and obtaining an image data of the touch object via the sense module; a transformation module coupled to the sense module for generating a peak value signal according to a pulse of the image data, so as to transmit the peak value signal to a calculation module; and the calculation module coupled to the optical module for determining a touch coordinate of the touch object relative to the touch zone according to the peak value signal; wherein the pulse is obtained via optically accumulating reflected light signals into the optical module and comprises a position parameter and an intensity parameter, a peak waveform of the pulse is reflected by the touch object to correspond to a position of the touch object, and intensities of the peak value signal are varied according to a relative position between the touch object and the sense module.