Touch system with code hopping algorithms and code division multiplexing

摘要

In one embodiment, a system includes a touch sensor and a computer-readable storage media coupled to the touch sensor and embodying logic that is configured when executed to receive a first plurality of sense signals from sense electrodes of the touch sensor and determine, based on characteristics of the first plurality of sense signals, a plurality of codes. The logic may then assign the plurality of codes to each of the drive electrodes of the touch sensor and determine, based on the assignment of the first plurality of codes to the drive electrodes, encoded drive signals which may be applied to the drive electrodes. The logic may then receive, based on the encoded drive signals, a second plurality of sense signals from the sense electrodes and determine, based on the assignment of the first plurality of codes to drive electrodes, a first touch on the touch sensor.