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

Claim 0:
1. An input device, comprising:
a plurality of sensor electrodes, including transmitter electrodes and receiver electrodes; and
a processing system connected to the plurality of sensor electrodes;
wherein the processing system is configured to perform single-burst multi-frequency presence detection, wherein performing single-burst multi-frequency presence detection includes:
driving the transmitter electrodes of the plurality of electrodes with transmitter signals having different frequencies;
obtaining resulting signals via the receiver electrodes of the plurality of electrodes based on the transmitter signals driven onto the transmitter 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 processing system 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.