Patent ID: 11972076
Assignee: SYNAPTICS INCORPORATED
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A processing system for an input device, comprising:
transmitter circuitry configured to drive transmitter electrodes of a plurality of electrodes with transmitter signals having different frequencies;
receiver circuitry configured to obtain resulting signals via receiver electrodes of the plurality of electrodes based on the transmitter signals driven onto the transmitter electrodes; and
a controller and/or processing circuitry configured to perform single-burst multi-frequency presence detection, wherein performing single-burst multi-frequency presence detection includes:
the transmitter circuitry driving the transmitter electrodes with the transmitter signals having different frequencies;
the receiver circuitry obtaining the resulting signals via the receiver electrodes; and
detecting whether an input object is present within a sensing region of the input device based on the obtained resulting signals;

wherein the controller and/or processing circuitry is further configured to enter an active mode based on a result of performing single-burst multi-frequency presence detection indicating that an input object is present.