US 12,366,947 B2
Method executed by sensor controller of electromagnetic resonance system, sensor controller, and position detection device
Hiroshi Mizuhashi, Saitama (JP); Akira Ito, Saitama (JP); Yoshihisa Sugiyama, Saitama (JP); and Joo Hoon Lee, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Dec. 6, 2024, as Appl. No. 18/971,950.
Application 18/971,950 is a continuation of application No. PCT/JP2023/020407, filed on Jun. 1, 2023.
Claims priority of application No. 2022-091360 (JP), filed on Jun. 6, 2022.
Prior Publication US 2025/0103161 A1, Mar. 27, 2025
Int. Cl. G06F 3/041 (2006.01); G01D 5/22 (2006.01); G06F 3/046 (2006.01)
CPC G06F 3/04166 (2019.05) [G01D 5/2208 (2013.01); G06F 3/046 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method executed by a sensor controller of an electromagnetic resonance system, the method comprising:
in each of a plurality of pen signal detection periods, connecting a plurality of coils in connection modes, wherein the connection modes have different connection polarities for each pen signal detection period;
detecting a result value indicating a level of a pen signal via the plurality of coils;
separately acquiring the level of the pen signal corresponding to each of the plurality of coils by performing a restoration operation according to the connection polarities on a plurality of the result values detected in the respective pen signal detection periods.