Patent ID: 8022940

Claim:
A data transmission method in a capacitive touch system including at least two first integrated circuits to simultaneously scan a touch panel and a second integrated circuit to receive sensed data from the first integrated circuits, the data transmission method comprising: selecting one of the first integrated circuits to send five parameters therefrom to the second integrated circuit; wherein the first parameter represents a sum of the sensed data of all traces in a direction that the selected first integrated circuit is in charge of scanning, the second parameter represents a sum of products obtained by multiplying the sensed data of each trace in the direction that the selected first integrated circuit scans by the order number of that trace, the third parameter represents a number of fingers in the direction detected by the selected first integrated circuit, the fourth parameter indicates whether or not the sensed value of the first trace in the direction that the selected first integrated circuit is in charge of scanning is zero, and the fifth parameter indicates whether or not the sensed value of the last trace in the direction that the selected first integrated circuit is in charge of scanning is zero.