Patent ID: 9442604
Filing Date: 2016-09-13
CPC Classification: G06F

Claim Text:
1. An optical-touch calibration method, suitable for an optical-touch panel including a projective light source, a line optical sensor and a deformable touch panel plate on which a touch operation is performed, the optical-touch calibration method comprising: generating a projective beam by the projective light source, and the projective beam being reflected to the line optical sensor; utilizing the line optical sensor to measure the reflected projective beam for obtaining a reflected intensity curve relative to a linear coordinate axis; calculating an intensity difference between the reflected intensity curve and a reference intensity curve, wherein the intensity difference between the reflected intensity curve and the reference intensity curve corresponds to a deformational degree of the deformable touch panel plate on the optical-touch panel: when the deformable touch panel plate deforms within a certain degree on the optical-touch panel, a protective central axis of the projective beam generated by the projective light source is deviated from its original orientation, causing the intensity difference; and adjusting an emitting power of the projective light source if the intensity difference exceeds a first threshold value.