Hybrid force measurement
AssigneeSynaptics Incorporated
InventorDerek Solven
Life of this patent
Estimating the term…
Abstract
Hybrid force sensing includes acquiring absolute capacitance measurements of the absolute capacitance of at least one frame side electrode, acquiring mutual capacitance measurements of the mutual capacitance between the at least one frame side electrode and at least one display side electrode. Hybrid force sensing further includes determining an absolute capacitance derived force from the absolute capacitance measurements, determining a mutual capacitance derived force from the mutual capacitance measurements, and combining the absolute capacitance derived force and the mutual capacitance derived force to obtain a combined force. Hybrid force sensing further includes performing an action based on the combined force.
Claims20
A method for hybrid force sensing comprising:
- acquiring a plurality of absolute capacitance measurements of the absolute capacitance of at least one frame side electrode;
- acquiring a plurality of mutual capacitance measurements of the mutual capacitance between the at least one frame side electrode and at least one display side electrode;
- determining an absolute capacitance derived force from the plurality of absolute capacitance measurements;
- determining a mutual capacitance derived force from the plurality of mutual capacitance measurements;
- combining the absolute capacitance derived force and the mutual capacitance derived force to obtain a combined force;
- and
- performing an action based on the combined force.
An input device comprising:
- at least one frame side electrode;
- at least one display side electrode;
- and
- a processing system that is configured to:
- acquire a plurality of absolute capacitance measurements of the absolute capacitance of at least one frame side electrode;
- acquire a plurality of mutual capacitance measurements of the mutual capacitance between the at least one frame side electrode and at least one display side electrode;
- determine an absolute capacitance derived force from the plurality of absolute capacitance measurements;
- determine a mutual capacitance derived force from the plurality of mutual capacitance measurements;
- combine the absolute capacitance derived force and the mutual capacitance derived force to obtain a combined force;
- and
- perform an action based on the combined force.
A processing system for hybrid force sensing comprising:
- sensor circuitry with functionality to:
- acquiring a plurality of absolute capacitance measurements of the absolute capacitance of at least one frame side electrode, and
- acquiring a plurality of mutual capacitance measurements of the mutual capacitance between the at least one frame side electrode and at least one display side electrode;
- and
- processing circuitry with functionality to:
- determining an absolute capacitance derived force from the plurality of absolute capacitance measurements,
- determining a mutual capacitance derived force from the plurality of mutual capacitance measurements,
- combining the absolute capacitance derived force and the mutual capacitance derived force to obtain a combined force, and
- performing an action based on the combined force.
Dependencies are inferred from the claim text.