US 11,842,000 B2
Sensor system
Igor Karsuntsev, Saitama (JP); Shigeyuki Sano, Kanagawa (JP); and Kenichi Ono, Tokyo (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Oct. 5, 2020, as Appl. No. 17/063,584.
Application 17/063,584 is a continuation of application No. 16/252,266, filed on Jan. 18, 2019, granted, now 10,795,468.
Claims priority of application No. 2018-016230 (JP), filed on Feb. 1, 2018.
Prior Publication US 2021/0018992 A1, Jan. 21, 2021
Int. Cl. G06F 3/038 (2013.01); G06F 3/0354 (2013.01); G06F 3/041 (2006.01); G06F 1/16 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/0383 (2013.01) [G06F 1/169 (2013.01); G06F 1/1616 (2013.01); G06F 1/1681 (2013.01); G06F 3/03545 (2013.01); G06F 3/0416 (2013.01); G06F 3/044 (2013.01); G06F 2203/04104 (2013.01)] 22 Claims
OG exemplary drawing
 
21. A sensor system that detects a stylus, the sensor system comprising:
a first integrated circuit connected to a first sensor electrode group disposed over a first panel face, wherein the first integrated circuit, in operation, transmits a first uplink signal through the first sensor electrode group and outputs a position of the stylus on the first panel face to a host controller via a first output line; and
a second integrated circuit connected to a second sensor electrode group disposed over a second panel face, wherein the second integrated circuit is different from the first integrated circuit, and wherein the second integrated circuit, in operation, transmits a second uplink signal through the second sensor electrode group and outputs a position of the stylus on the second panel face to the host controller via a second output line that is different from the first output line,
wherein the first panel face is movable with respect to the second panel face such that an angle between the first panel face and the second panel face changes,
wherein the first integrated circuit, in operation, issues to the second integrated circuit a notification indicating that the first integrated circuit has detected the stylus in response to the first integrated circuit determining that the first integrated circuit has detected the stylus,
wherein the first integrated circuit, in operation, directly issues the notification to the second integrated circuit via a connection line that connects the first integrated circuit to the second integrated circuit,
wherein the connection line is different from the first output line and the second output line,
wherein the second integrated circuit, in operation, stops transmission of the second uplink signal in response to receiving from the first integrated circuit the notification indicating that the first integrated circuit has detected the stylus while the first integrated circuit continues transmission of the first uplink signal, and
wherein, after the second integrated circuit stops transmission of the second uplink signal through the second sensor electrode group, the second integrated circuit, in operation, performs a detection process that detects a position of a finger on the second panel face without performing a detection process that detects a position of a stylus on the second panel face.