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1. (WO2018098689) WHEEL ASSEMBLY AND ASSOCIATED INPUT DEVICE

Pub. No.:    WO/2018/098689    International Application No.:    PCT/CN2016/108036
Publication Date: Fri Jun 08 01:59:59 CEST 2018 International Filing Date: Thu Dec 01 00:59:59 CET 2016
IPC: G06F 3/0362
G06F 3/033
Applicants: MICROSOFT TECHNOLOGY LICENSING, LLC.
YAO, Wensheng
Inventors: YAO, Wensheng
ZHANG, Chunlai
ZHAO, Ke
Title: WHEEL ASSEMBLY AND ASSOCIATED INPUT DEVICE
Abstract:
Embodiments of present disclosure relates to a wheel assembly that can be used with mouse or other input device. The wheel assembly includes a wheel, a magnet for generating a magnetic field, and at least three magnetic sensors for sensing an absolute angular position of the wheel. The magnet coupled to the wheel and operable to rotate with a rotation of the wheel. The at least three magnetic sensors are arranged within a plane that is located in a predetermined distance from the magnet and substantially parallel to a main direction of the magnetic field generated by the magnet. Compared to the conventional sensors that measure the relative position of the wheel, such multiple magnetic sensors based wheel assembly enables a direct absolute angular position measurement.