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US 2025/0147607 A1Published application
Touch sensor and method for deriving a stylus position
AssigneeWacom Co., Ltd.
InventorThomas Bell
Life of this patent
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Abstract
A stylus includes a first sensor configured to receive a first receive signal from a touch sensor of a device, and a second sensor configured to receive a second receive signal from the touch sensor of the device. The stylus includes an amplifier coupled to the first and second sensors and configured to produce a third signal by amplifying the difference between the first receive signal and the second receive signal. The stylus includes a controller configured to decode information encoded in the first receive signal and the second receive signal by processing the third signal.
Claims5
A stylus comprising:
- a first sensor disposed proximate a first end of the stylus and adapted to receive a first receive signal via a first capacitive coupling with a touch sensor of a device, the first end of the stylus being at a tip-end of the stylus;
- and
- a second sensor disposed proximate the first end of the stylus and adapted to receive a second receive signal via a second capacitive coupling with the touch sensor of the device;
- wherein a proximity of the first sensor to the first end of the stylus is greater than a proximity of the second sensor to the first end of the stylus;
- and
- wherein a widest portion of the first sensor has a greater width than at least a portion of the second sensor.
3 more elements
Dependencies are inferred from the claim text.