Input device having integrated electromagnetic resonance (emr) stylus and capacitive touch sensing
OwnerGuozhong Shen, Chieh-Feng Tuinventors
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Abstract
A sensor apparatus includes a plurality of electrodes disposed in a single integrated layer. The plurality of electrodes includes: a first set of electrodes corresponding to a first direction, wherein each of the first set of electrodes comprises a trunk and a plurality of branches protruding from the trunk; and a second set of electrodes corresponding to a second direction, wherein each of the second set of electrodes is configured to form a current loop. The plurality of electrodes are configured to be operable in both a first sensing mode and a second sensing mode, wherein in the first sensing mode, the second set of electrodes are operated to provide respective current loops.
Claims20
A system, comprising:
- a plurality of electrodes disposed in a single integrated layer, including a first set of electrodes corresponding to a first direction and a second set of electrodes corresponding to a second direction, wherein each of the first set of electrodes comprises a trunk and a plurality of branches protruding from the trunk, and wherein each of the second set of electrodes is configured to form a current loop;
- and
- a processing system configured to:
- operate the plurality of electrodes in a first sensing mode, wherein the first sensing mode, the second set of electrodes are operated to provide respective current loops, and wherein in the first sensing mode, the processing system is configured to determine a location of a stylus in a sensing region corresponding to the plurality of electrodes;
- and
- operate the plurality of electrodes in a second sensing mode, wherein in the second sensing mode, the processing system is configured to determine a location of an input object in the sensing region.
A sensor apparatus, comprising:
- a plurality of electrodes disposed in a single integrated layer, wherein the plurality of electrodes includes:
- a first set of electrodes corresponding to a first direction, wherein each of the first set of electrodes comprises a trunk and a plurality of branches protruding from the trunk;
- and
- a second set of electrodes corresponding to a second direction, wherein each of the second set of electrodes is configured to form a current loop;
- wherein the plurality of electrodes are configured to be operable in both a first sensing mode and a second sensing mode, wherein in the first sensing mode, the second set of electrodes are operated to provide respective current loops.
A method for performing stylus sensing and capacitive touch sensing using an integrated stylus and capacitive touch sensing layer, comprising:
- performing, by a processing system, stylus sensing using the integrated sensing layer;
- detecting, by the processing system, a location of a stylus in a sensing region of a touch sensor device based on the stylus sensing;
- performing, by the processing system, capacitive touch sensing using the integrated sensing layer;
- and
- detecting, by the processing system, a location of an input object in the sensing region based on the capacitive touch sensing;
- wherein the integrated sensing layer comprises a first plurality of electrodes and a second plurality electrodes, wherein the second plurality of electrodes is configured to be used as current loops for stylus sensing while performing the stylus sensing and as transmitter or receiver electrodes while performing the capacitive touch sensing, wherein the first plurality of electrodes is configured to be used as transmitter or receiver electrodes or as ground or guard electrodes while performing the capacitive touch sensing, and wherein the first and second pluralities of electrodes are disposed on a same layer of the touch sensor device.
Dependencies are inferred from the claim text.