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US 2025/0093991 A1Published application
Method of palm rejection and sensor controller
AssigneeWacom Co., Ltd.
InventorsMasayuki MIYAMOTO, Hideyuki HARA
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Abstract
A method of palm rejection is executed by a sensor controller that is connected to a plurality of sensor electrodes and that detects a downlink signal transmitted from an active pen. The method includes determining whether or not a phase of the detected downlink signal matches a phase shared in advance between the sensor controller and the active pen, and outputting, when it is determined that the phases match, a position of the active pen derived on the basis of a distribution of levels of the downlink signal in the plurality of sensor electrodes.
Claims9
A method performed by a sensor controller, comprising:
- detecting, in a plurality of sensor electrodes, a downlink signal having a predetermined frequency or a predetermined waveform transmitted from an active pen;
- comparing a phase of the detected downlink signal and a phase shared in advance between the sensor controller and the active pen;
- and
- outputting, responsive to a result of the comparison of the phases, a position of the active pen based on the downlink signal detected in the plurality of sensor electrodes.
1 more element
Dependencies are inferred from the claim text.