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 |
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.
|