Patent ID: 8169550

Claim:
A cursor control method for controlling the movement of a cursor on an image display, the method comprising the steps of: providing at least two reference points for generating light of a predetermined spectrum and defining a predetermined area; providing an image sensor for pointing inside the predetermined area; receiving the light of the predetermined spectrum by the image sensor to form a digital image; identifying positions and shapes of the images of the reference points on the digital image to form a first parameter comprising a first distance between the images of the reference points; performing distance and angle compensations on the first parameter, wherein the distance compensation is implemented according to a proportional relationship between the first distance and a predetermined distance between the images of the reference points; moving the aiming point of the image sensor inside the predetermined area to form a second parameter; and calculating a displacement of the images of the reference points on the digital image according to the compensated first parameter and the second parameter so as to accordingly control the movement of the cursor.