US 12,462,672 B2
Method carried out in system including active stylus and sensor controller, sensor controller, and active stylus
Sadao Yamamoto, Tokyo (JP); and Hideyuki Hara, Tokyo (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Aug. 2, 2024, as Appl. No. 18/793,280.
Application 17/039,225 is a division of application No. 16/520,461, filed on Jul. 24, 2019, granted, now 10,861,323, issued on Dec. 8, 2020.
Application 18/793,280 is a continuation of application No. 18/177,674, filed on Mar. 2, 2023, granted, now 12,087,153.
Application 18/177,674 is a continuation of application No. 17/486,376, filed on Sep. 27, 2021, granted, now 11,600,169, issued on May 7, 2023.
Application 17/486,376 is a continuation of application No. 17/234,604, filed on Apr. 19, 2021, granted, now 11,132,895, issued on Sep. 28, 2021.
Application 17/234,604 is a continuation of application No. 17/039,225, filed on Sep. 30, 2020, granted, now 11,004,330, issued on May 11, 2021.
Application 16/520,461 is a continuation of application No. PCT/JP2018/004344, filed on Feb. 8, 2018.
Claims priority of provisional application 62/462,184, filed on Feb. 22, 2017.
Prior Publication US 2024/0395131 A1, Nov. 28, 2024
Int. Cl. G08C 17/02 (2006.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01); H04B 1/69 (2011.01); H04B 1/7073 (2011.01)
CPC G08C 17/02 (2013.01) [G06F 3/04162 (2019.05); G06F 3/0441 (2019.05); G06F 3/0442 (2019.05); H04B 1/7073 (2013.01); G08C 2201/32 (2013.01); H04B 2001/6912 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method carried out in a system including an active stylus and a sensor controller, the method comprising:
transmitting, by the sensor controller, a first variable-length command including data of a variable number of bits;
receiving, by the active stylus, an uplink signal having a variable time length;
detecting, by the active stylus, the first variable-length command by decoding the uplink signal;
determining, by the active stylus based on the first variable-length command, a time period during which the active stylus continues to detect the first variable-length command; and
transmitting, by the active stylus, a downlink signal according to the first variable-length command.