US 12,229,372 B2
Position pointer
Yasuo Oda, Saitama (JP); Masaki Yagi, Saitama (JP); and Yoshihisa Sugiyama, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Jul. 7, 2021, as Appl. No. 17/369,648.
Application 17/369,648 is a continuation of application No. 16/780,467, filed on Feb. 3, 2020, granted, now 11,086,457.
Application 16/780,467 is a continuation of application No. 16/389,485, filed on Apr. 19, 2019, granted, now 10,551,946, issued on Feb. 4, 2020.
Application 16/389,485 is a continuation of application No. 15/894,576, filed on Feb. 12, 2018, granted, now 10,310,641, issued on Jun. 4, 2019.
Application 15/894,576 is a continuation of application No. 14/997,234, filed on Jan. 15, 2016, granted, now 9,927,889, issued on Mar. 27, 2018.
Application 14/997,234 is a continuation of application No. 13/420,305, filed on Mar. 14, 2012, granted, now 9,268,417, issued on Feb. 23, 2016.
Claims priority of application No. 2011-087450 (JP), filed on Apr. 11, 2011.
Prior Publication US 2021/0333929 A1, Oct. 28, 2021
Int. Cl. G06F 3/044 (2006.01); G06F 1/3234 (2019.01); G06F 3/0354 (2013.01); G06F 3/038 (2013.01); G06F 3/041 (2006.01); G06F 3/046 (2006.01)
CPC G06F 3/0442 (2019.05) [G06F 1/3262 (2013.01); G06F 3/03545 (2013.01); G06F 3/0383 (2013.01); G06F 3/041 (2013.01); G06F 3/0441 (2019.05); G06F 3/0445 (2019.05); G06F 3/0446 (2019.05); G06F 3/046 (2013.01)] 31 Claims
OG exemplary drawing
 
1. A position pointer for indicating a position on a sensor of a position detection device, the position pointer comprising:
an elongate pointer body having a distal end and a proximal end;
a central electrode disposed near the distal end of the elongate pointer body, wherein the central electrode includes a tip that extends beyond the distal end of the elongate pointer body;
a transmission signal generation circuit configured to generate a first signal and transmit the first signal via the central electrode to the position detection device;
a detection circuit configured to output a control signal indicative of a result of detecting a second signal transmitted from the position detection device;
a power storage circuit configured to store driving power supplied from an external device; and
a power supply control circuit configured to control the power storage circuit, in response to the control signal exhibiting a first control to indicate detection of the second signal by the detection circuit, to supply the stored driving power to the transmission signal generation circuit to generate and transmit the first signal via the central electrode to the position detection device.