Palm rejection visualization for passive stylus
AssigneeSynaptics Incorporated
InventorJoel Jordan
Life of this patent
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Abstract
A processing system for a capacitive sensing device has a sensor module with sensor circuitry coupled to sensor electrodes, the sensor module drives the sensor electrodes for capacitive sensing, and a determination module to detect input objects in a sensing region of the capacitive sensing device, enter a pen mode based on detecting a condition, determine, responsive to entering the pen mode, exclusion data based on at least the one input object. An exclusion region is displayed by a host device, the exclusion region is based on the exclusion data and includes a portion of the sensing region with diminished detectability of an input object.
Claims15
A processing system for a capacitive sensing device, comprising:
- a sensor module comprising sensor circuitry configured to be coupled to a plurality of sensor electrodes, the sensor module configured to drive the plurality of sensor electrodes for capacitive sensing;
- and
- a determination module configured to:
- detect a first input object and a second input object in a sensing region of the capacitive sensing device;
- enter a pen mode based on detecting a first condition;
- and
- determine, responsive to entering the pen mode, exclusion data based on at least the second input object,
- wherein an exclusion region is displayed by a host device, the exclusion region based on the exclusion data and comprising a portion of the sensing region with diminished detectability of the first input object,
- wherein the exclusion region is displayed, to be viewable by a user, as a partially transparent area on a display of the host device, and
- wherein the exclusion region is influenced by a size and strength of the second input object, and a layout of the plurality of sensor electrodes.
An input device system, comprising:
- a display device;
- a plurality of sensor electrodes;
- and
- a processing system, the processing system coupled to the sensor electrodes and the display device, the processing system configured to:
- drive the plurality of sensor electrodes to detect a first input object and a second input object in a sensing region;
- enter a pen mode based on detecting a first condition;
- determine, responsive to entering the pen mode, exclusion data based on at least the second input object;
- and
- output an exclusion region on the display device, the exclusion region based on the exclusion data and comprising a portion of the sensing region with diminished detectability of the first input object, wherein the exclusion region is displayed, to be viewable by a user, as a partially transparent area on a display of the display device, and
- wherein the exclusion region is influenced by a size and strength of the second input object, and a layout of the plurality of sensor electrodes.
A method for capacitive sensing, comprising:
- detecting a first input object and a second input object in a sensing region of a capacitive sensing device;
- entering a pen mode based on detecting a first condition;
- and
- determining, responsive to entering the pen mode, exclusion data based on at least the second input object,
- wherein an exclusion region is displayed by a host device, the exclusion region based on the exclusion data and comprising a portion of the sensing region with diminished detectability of the first input object while in the pen mode,
- wherein the exclusion region is displayed, to be viewable by a user, as a partially transparent area on a display of the host device, and
- wherein the exclusion region is influenced by a size and strength of the second input object, and a layout of the plurality of sensor electrodes.
Dependencies are inferred from the claim text.