Patent ID: 8314775

Claim:
A multi touch sensing surface apparatus comprising: an array of sensing devices, each sensing device including two switches and a sensing electrode electrically connected between the two switches, wherein the array includes a first sensing device with a first switch and a second switch, a second sensing device with a third switch and a fourth switch, and a third sensing device with a fifth switch and a sixth switch; and control circuitry that generates control signals to control the sensing devices, the control circuitry including a first conductive line connected to the first switch and the third switch, a second conductive line connected to the fifth switch, a third conductive line connected to the second switch, and a fourth conductive line connected to the fourth switch and the sixth switch, wherein the control circuitry controls the first sensing device with the control signals on the first and third conductive lines, controls the second sensing device with the control signals on the first and fourth conductive lines, and controls the third sensing device with the control signals on the second and fourth conductive lines.