Patent ID: 8497846

Claim:
A touch detection method applied in a touch detector for detecting a double click event triggered on a touch panel, the touch detection method comprising: (a) determining whether a first touch event triggered on the touch panel is detected; (b) when the first touch event is triggered, recording a first set of touch location corresponding to the first touch event, activating a counting operation for determining an operation period, and setting an operation flag as a first value; (c) determining whether the operation period ends; (d) when the operation period does not end and the operation flag is corresponding to the first value, determining whether a first touch termination event triggered on the touch panel is detected; if so, having a touch flag ascended by 1, having the operation flag set as a second value, and repeating step (c); (e) when the operation period does not end and the operation flag is corresponding to the second value, determining whether a second touch event is triggered on the touch panel is detected; if so, recording a second set of touch location corresponding to the second touch event, having the operation flag set as a third value, and repeating step (c); (f) when the operation period does not end and the operation flag corresponding to the third value, determining whether a second touch termination event triggered on the touch panel is detected; if so, the having the touch flag ascended by 1, having the operation flag set as the first value, and repeating step (c); (g) when the operation period does end, determining whether the touch flag corresponds to a value greater than or equal to N+2, and determining whether a set of distances between the first set and the second set locations is smaller than or equal to a threshold, wherein N is an initial value of the touch flag; and (h) when the value of the touch flag is greater than or equal to N+2 and the set of distances is smaller than or equal to the threshold, determining the double click event is achieved.