US 12,216,867 B2
Electronic pen, input system, and pen pressure adjustment method
Takeshi Koike, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Jul. 28, 2023, as Appl. No. 18/361,581.
Claims priority of application No. 2022-158091 (JP), filed on Sep. 30, 2022.
Prior Publication US 2024/0111386 A1, Apr. 4, 2024
Int. Cl. G06F 3/044 (2006.01); G06F 3/0354 (2013.01); G06F 3/041 (2006.01); G06F 3/038 (2013.01)
CPC G06F 3/0441 (2019.05) [G06F 3/03545 (2013.01); G06F 3/04162 (2019.05); G06F 3/0418 (2013.01); G06F 3/0383 (2013.01); G06F 3/0442 (2019.05); G06F 2203/04108 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An electronic pen that indicates a position on a plane-shaped sensor through communication with an electronic device including the plane-shaped sensor, the electronic pen comprising:
a reception circuit configured to receive a signal transmitted from the electronic device;
a pen pressure sensor configured to output a detection signal correlated with an amount of pen pressure exerted on a pen tip of the electronic pen; and
a value conversion circuit configured to convert, according to a conversion rule, a detection value indicated by the detection signal output from the pen pressure sensor, into a conversion value indicating a magnitude of the amount of pen pressure,
wherein the value conversion circuit adjusts, according to a strength of the signal received by the reception circuit, rising sensitivity at which the amount of pen pressure transitions from zero to non-zero on a conversion characteristic curve identified by the conversion rule, where the conversion characteristic curve is expressed on a coordinate system with the detection value as a first axis and the conversion value as a second axis.