US 11,989,366 B2
System including pen and touch controller, method executed by pen, pen, and touch controller
Masayuki Miyamoto, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Apr. 6, 2023, as Appl. No. 18/296,896.
Application 18/296,896 is a continuation of application No. PCT/JP2021/034014, filed on Sep. 15, 2021.
Prior Publication US 2023/0244341 A1, Aug. 3, 2023
Int. Cl. G06F 3/041 (2006.01); G06F 3/0354 (2013.01); G06F 3/038 (2013.01); G06F 3/044 (2006.01); H04W 72/21 (2023.01); H04W 72/23 (2023.01)
CPC G06F 3/04162 (2019.05) [G06F 3/03545 (2013.01); G06F 3/0383 (2013.01); G06F 3/0441 (2019.05); G06F 3/0442 (2019.05); H04W 72/21 (2023.01); H04W 72/23 (2023.01)] 13 Claims
OG exemplary drawing
 
1. A system comprising:
a pen; and
a touch controller, wherein:
the pen and the touch controller are configured to use a frame including a plurality of temporally separated pen detection periods to transmit and receive signals with each other,
each of the pen and the touch controller:
is configured to transmit and detect a reference signal for synchronizing a frame position; and
acquires the frame position on a basis of the reference signal when the reference signal is detected, and operates according to the acquired frame position; and
the pen is configured to transmit, when changing a master of synchronization, a reference change signal indicating that the pen is to be the master of synchronization.