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1. (WO2017058505) STYLUS PEN WITH DYNAMIC PROTOCOL SELECTION FOR COMMUNICATION WITH A DIGITIZER

Pub. No.:    WO/2017/058505    International Application No.:    PCT/US2016/051421
Publication Date: Fri Apr 07 01:59:59 CEST 2017 International Filing Date: Wed Sep 14 01:59:59 CEST 2016
IPC: G06F 3/038
G06F 3/041
G06F 3/044
G06F 3/0354
Applicants: MICROSOFT TECHNOLOGY LICENSING, LLC
Inventors: RIBEIRO, Flavio Protasio
BATHICHE, Steven
LEE, Woo Suk
Title: STYLUS PEN WITH DYNAMIC PROTOCOL SELECTION FOR COMMUNICATION WITH A DIGITIZER
Abstract:
A stylus pen is disclosed that can detect touch signals from a digitizer and dynamically determine which digitizer (e.g., make/model) generated the touch signals. The stylus pen can then switch to one of a plurality of candidate protocols, without interaction from the user, so as to communicate with the digitizer. The digitizer need not explicitly communicate what protocol it supports to the stylus pen. Rather, the stylus pen analyzes the digitizer waveforms and compares the waveforms to known signatures to determine which digitizer is being used. The stylus pen can then dynamically set a protocol used to communicate with the digitizer that matches the protocol expected by the digitizer.