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1. (WO2018085162) ACTIVE STYLUS SYNCHRONIZATION

Pub. No.:    WO/2018/085162    International Application No.:    PCT/US2017/058921
Publication Date: Sat May 12 01:59:59 CEST 2018 International Filing Date: Tue Oct 31 00:59:59 CET 2017
IPC: G06F 3/0354
G06F 3/044
G06F 1/32
Applicants: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventors: WESTHUES, Jonathan
QIAO, Tianzhu
Title: ACTIVE STYLUS SYNCHRONIZATION
Abstract:
Examples are disclosed herein that relate to communication between a capacitive touch sensor and an active stylus. An example provides an active stylus comprising an electrode tip, and receive circuitry coupled to the electrode tip. The receive circuitry may be configured to receive a capacitive signal from a touch sensor through the electrode tip, determine which of two or more drive signals produced by respective regions of the touch sensor most strongly influenced the capacitive signal, each drive signal being associated with a different operating mode, and configure one or both of the active stylus and the touch sensor to operate in the operating mode associated with the determined drive signal.