US 11,853,485 B2
Pointer, position detection apparatus and position detection method
Yasuo Oda, Saitama (JP); Sadao Yamamoto, Saitama (JP); and Yoshihisa Sugiyama, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Jul. 19, 2021, as Appl. No. 17/379,747.
Application 17/379,747 is a continuation of application No. 16/689,830, filed on Nov. 20, 2019, granted, now 11,099,661.
Application 16/689,830 is a continuation of application No. 15/896,984, filed on Feb. 14, 2018, granted, now 10,514,781, issued on Dec. 24, 2019.
Application 15/896,984 is a continuation of application No. 15/047,013, filed on Feb. 18, 2016, granted, now 10,108,277, issued on Oct. 23, 2018.
Application 15/047,013 is a continuation of application No. 14/542,438, filed on Nov. 14, 2014, granted, now 9,529,456, issued on Dec. 27, 2016.
Application 14/542,438 is a continuation of application No. 12/877,780, filed on Sep. 8, 2010, granted, now 8,963,889, issued on Feb. 24, 2015.
Claims priority of application No. 2010-024858 (JP), filed on Feb. 5, 2010.
Prior Publication US 2021/0349558 A1, Nov. 11, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 3/0354 (2013.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01); G06F 3/046 (2006.01); G06F 3/038 (2013.01)
CPC G06F 3/03545 (2013.01) [G06F 3/0383 (2013.01); G06F 3/046 (2013.01); G06F 3/0442 (2019.05); G06F 3/0446 (2019.05); G06F 3/04162 (2019.05)] 23 Claims
OG exemplary drawing
 
1. A pen-shaped position indicator configured to capacitively couple with a sensor surface of a position detection apparatus, the pen-shaped position indicator comprising:
a pen-shaped body having a pen-tip portion;
a coil;
a driving power production circuit configured to produce a DC voltage from an induced signal in the coil, wherein the induced signal is generated by a wireless interaction with a charging device;
a signal production circuit connected to the driving power production circuit and configured to generate a signal based on the DC voltage to form a capacitive relationship between the pen-shaped body and the position detection apparatus;
a first electrode arranged at a first position of the pen-tip portion; and
a second electrode arranged at a second position of the pen-tip portion different from the first position, the second position being off an axis of the pen-shaped position indicator,
wherein the first and second electrodes are configured to form first and second capacitive relationships with the sensor surface, respectively, to generate detection signals in the sensor surface from which a first detection signal and a second detection signal distinguishable from each other are extracted and used to obtain angle information of the pen-shaped position indicator.