Patent ID: 8605047

Claim:
A threshold compensation method applied to a touch device comprising a plurality of touch points, the threshold compensation method comprising steps of: selecting at least one of the plurality of touch points as a selected object; obtaining sensing data of each of the touch points of the selected object in each of multiple initializing frequency periods; obtaining a sensing data difference value between the sensing data of each of the touch points of the selected object in each adjacent two of the initializing frequency periods; obtaining a particular sensing data difference value according to multiple sensing data difference values of the selected object in the multiple initializing frequency periods, wherein the particular sensing data difference value is selected from a maximum sensing data difference value in the multiple sensing data difference values, an average of the maximum sensing data difference value and a minimum sensing data difference value in the multiple sensing data difference values, and a median sensing data difference value in the multiple sensing data difference values; and setting a default threshold of the selected object according to the particular sensing data difference value; wherein the step of setting the default threshold of the selected object according to the particular sensing data difference value comprises steps of: defining the particular sensing data difference value as a first threshold; determining whether the first threshold is greater than a preset maximum threshold; and setting the preset maximum threshold as the default threshold if the first threshold is greater than the preset maximum threshold, otherwise setting the first threshold as the default threshold.