Patent ID: 8547352

Claim:
A method for sensing a moved touch under a contact state in a moved touch sensing apparatus, the method comprising: (a) acquiring channel information corresponding a touch inputted into a contact region; (b) converting each of first channel information and second channel information acquired as the touch moves into order information according to a predetermined order; and (c) outputting a movement distance clock signal representing a movement distance of the touch on the basis of the converted order information, wherein step(b) includes: converting a plurality of channel information into predetermined order information; storing the order information from the order information corresponding to the first channel information in a first ring buffer in sequence; and storing the order information from the order information corresponding to the second channel information in a second ring buffer in sequence, wherein at step (c), the movement distance clock signal is outputted on the basis of a difference between the order information stored in the first ring buffer and the order information stored in the second ring buffer, and wherein step (c) includes: sequentially moving the order information corresponding to the first channel information stored in the first ring buffer to be positioned in a storage block having the same ranking as the storage block storing the order information corresponding to the first channel information stored in the second ring buffer; calculating the number of storage blocks to which the order information corresponding to the first channel information moves during the above-mentioned movement; generating the movement distance clock signal by using the calculated number of storage blocks; and outputting the generated movement distance clock signal.