Patent ID: 8605052

Claim:
A method for filtering out signals, suitable for a touch device, wherein the touch device comprises a plurality of sensing areas, the method comprising: pre-configuring the entire touch device into a plurality of pre-configured sensing areas; obtaining a touch signal from the touch device; determining when the touch signal is considered noise to be discarded, the steps of determining comprising: in a location from which the touch signal originates, obtaining from within the plurality of the pre-configured sensing areas signal intensity values respectively corresponding to a first sensing area, a second sensing area, a third sensing area, and a fourth sensing area according to the touch signal wherein the second sensing area is located between and adjacent to the first sensing area and the third sensing area in opposite sides and another side of the second sensing area other than the opposite sides is directly adjacent to the fourth sensing area which is corner way adjacent to the first sensing area and the third sensing area; and discarding the touch signal when the signal intensity value of the second area is greater than zero and less than the signal intensity values of the first area and the third area and the fourth area.