US 12,079,406 B2
Communication method executed between active pen and sensor controller, and active pen
Sadao Yamamoto, Saitama (JP); and Yasuo Oda, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Jun. 21, 2023, as Appl. No. 18/339,018.
Application 17/732,253 is a division of application No. 16/836,494, filed on Mar. 31, 2020, granted, now 11,360,586, issued on Jun. 14, 2022.
Application 18/339,018 is a continuation of application No. 17/732,253, filed on Apr. 28, 2022, granted, now 11,720,189.
Application 16/836,494 is a continuation of application No. PCT/JP2017/042777, filed on Nov. 29, 2017.
Prior Publication US 2023/0350507 A1, Nov. 2, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/041 (2006.01); G06F 3/0354 (2013.01); G06F 3/038 (2013.01)
CPC G06F 3/0383 (2013.01) [G06F 3/03545 (2013.01); G06F 3/04162 (2019.05); G06F 2203/0382 (2013.01)] 8 Claims
OG exemplary drawing
 
1. An active pen that transmits, through coupling capacitance, a signal to a sensor electrode connected to a sensor controller, the active pen comprising:
a first electrode provided on a first portion in a pen axis direction of the active pen;
a second electrode provided on a second portion different from the first portion in the pen axis direction; and
a signal processor that transmits a downlink signal from the first electrode and that transmits a reverse-phase signal of the downlink signal from the second electrode at the same time,
wherein the second electrode includes a plurality of segmented electrodes, and
wherein the signal processor is capable of individually switching each of the plurality of segmented electrodes to transmit the downlink signal or to transmit the reverse-phase signal.