Driving device and device method

A driving device, configured to drive a sensing device having a plurality of driving electrodes and a plurality of sensing electrodes, the driving device comprising:

• a signal processing circuit, electrically connected to the plurality of driving electrodes of the sensing device, and configured to generate a plurality of driving signals to drive the sensing device, wherein the signal processing circuit selects a plurality of Walsh codes from a plurality of rows or a plurality of columns of a plurality of order-reduced matrices obtained through order reduction of a Walsh matrix to serve as the plurality of driving signals, wherein an order number of each of the plurality of order-reduced matrices is less than the Walsh matrix;
• and
• a readout circuit, electrically connected to the plurality of sensing electrodes of the sensing device, and configured to readout the sensing device to generate a plurality of sensing signals and provide the plurality of sensing signals to the signal processing circuit, so that the signal processing circuit demodulates the plurality of sensing signals,
• wherein a bit number of each of the plurality of driving signals in one time period is equal to the order number of the corresponding plurality of order-reduced matrices, and a bit number of the plurality of driving signals in a total time period is equal to a sum of the order numbers of the plurality of order-reduced matrices.