US 12,229,351 B2
Touch sensor and method for deriving a stylus position
Thomas Bell, Fareham (GB)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Jan. 26, 2024, as Appl. No. 18/424,357.
Application 18/424,357 is a continuation of application No. 17/977,818, filed on Oct. 31, 2022, granted, now 11,921,938.
Application 17/977,818 is a continuation of application No. 17/839,017, filed on Jun. 13, 2022, granted, now 11,720,186, issued on Aug. 8, 2023.
Application 17/839,017 is a continuation of application No. 17/208,506, filed on Mar. 22, 2021, granted, now 11,360,582, issued on Jun. 14, 2022.
Application 17/208,506 is a continuation of application No. 16/550,883, filed on Aug. 26, 2019, granted, now 10,955,942, issued on Mar. 23, 2021.
Application 16/550,883 is a continuation of application No. 15/935,701, filed on Mar. 26, 2018, granted, now 10,394,348, issued on Aug. 27, 2019.
Application 15/935,701 is a continuation of application No. 15/177,846, filed on Jun. 9, 2016, granted, now 9,939,930, issued on Apr. 10, 2018.
Prior Publication US 2024/0160301 A1, May 16, 2024
Int. Cl. G06F 3/0354 (2013.01); G06F 3/038 (2013.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/03545 (2013.01) [G06F 3/0383 (2013.01); G06F 3/04162 (2019.05); G06F 3/0441 (2019.05); G06F 3/0442 (2019.05); G06F 3/0446 (2019.05); G06F 2203/04102 (2013.01); G06F 2203/04107 (2013.01); G06F 2203/04112 (2013.01)] 4 Claims
OG exemplary drawing
 
1. A method comprising:
transmitting a first signal from a first portion of a touch sensor, and at the same time transmitting a second signal different from the first signal from a second portion of the touch sensor, wherein the second signal is derived from inverting the first signal; and
deriving a position of a stylus based on a stylus signal transmitted from the stylus that has received a signal including the first signal and the second signal.