Patent ID: 8592698

Claim:
A data transmission method in a capacitive touch system, comprising: using at least two first integrated circuits defining slave integrated circuits to simultaneously scan a touch panel, each of the first integrated circuits for scanning a respective portion of a plurality of traces of the touch panel to determine a plurality of scanned sensed values, the data transmission method comprising: for each of the first integrated circuits, determining a touch area from the plurality of scanned sensed values including a plurality of traces having non-zero sensed touch values defining a touch position, each of the plurality of traces having non-zero sensed touch values being given an order number and sending the order number of a first trace of the plurality of traces having a non-zero sensed touch value and the order number of a last trace of the plurality of traces having a non-zero sensed touch value to a second integrated circuit defining a master integrated circuit; and sending the sensed touch values of all traces whose order numbers range from the order number of the first trace having a non-zero sensed touch value and the order number of the last trace having a non-zero sensed touch value to the second integrated circuit.