Multi-frequency single-burst driving and detection scheme for touch sensor

A method for performing presence detection for an input device, comprising:

• performing, by a processing system coupled to a plurality of electrodes in a sensing region, single-burst multi-frequency presence detection as part of an active cycle of a doze mode of the input device, wherein performing single-burst multi-frequency presence detection comprises:
• driving transmitter electrodes of the plurality of electrodes with first transmitter signals that form a pattern comprising a plurality of repeating blocks and one or more second transmitter signals that do not form a repeating block, wherein the first transmitter signals for each repeating block comprise at least two frequencies and each frequency has at least two phases;
• obtaining resulting signals via receiver electrodes of the plurality of electrodes based on the first transmitter signals and the second transmitter signals driven onto the transmitter electrodes;
• and
• detecting whether an input object is present within the sensing region of the input device based on the obtained resulting signals.

A non-transitory computer-readable media storing instructions for performing presence detection for an input device, wherein the instructions, when executed by one or more processors, cause the one or more processors to:

• perform, by a processing system coupled to a plurality of electrodes in a sensing region, single-burst multi-frequency presence detection as part of an active cycle of a doze mode of the input device, wherein performing single-burst multi-frequency presence detection comprises:
• driving transmitter electrodes of the plurality of electrodes with first transmitter signals that form a pattern comprising a plurality of repeating blocks and one or more second transmitter signals that do not form a repeating block, wherein the first transmitter signals for each basic repeating block comprise at least two frequencies and each frequency has at least two phases;
• obtaining resulting signals via receiver electrodes of the plurality of electrodes based on the first transmitter signals and the second transmitter signals driven onto the transmitter electrodes;
• and
• detecting whether an input object is present within the sensing region of the input device based on the obtained resulting signals.