US 12,008,206 B2
Position detection device, and position detection method based on electromagnetic inductive coupling and capacitive coupling
Yuji Katsurahira, Saitama (JP); and Hideyuki Hara, Saitama (JP)
Assigned to Wacom Co., Ltd., Saitama (JP)
Filed by Wacom Co., Ltd., Saitama (JP)
Filed on Mar. 31, 2023, as Appl. No. 18/194,453.
Application 18/194,453 is a continuation of application No. 17/559,954, filed on Dec. 22, 2021, granted, now 11,644,936.
Application 17/559,954 is a continuation of application No. 16/986,204, filed on Aug. 5, 2020, granted, now 11,249,610, issued on Feb. 15, 2022.
Application 16/986,204 is a continuation of application No. PCT/JP2018/042223, filed on Nov. 15, 2018.
Claims priority of application No. 2018-022683 (JP), filed on Feb. 13, 2018.
Prior Publication US 2023/0236701 A1, Jul. 27, 2023
Int. Cl. G06F 3/046 (2006.01); G06F 3/041 (2006.01); G06F 3/044 (2006.01)
CPC G06F 3/046 (2013.01) [G06F 3/04164 (2019.05); G06F 3/0446 (2019.05); G06F 3/0447 (2019.05); G06F 2203/04106 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A position detection device comprising:
a position detection sensor having a plurality of first loop electrodes arranged in a first direction, and a plurality of second loop electrodes arranged in a second direction perpendicular to the first direction,
wherein each of the first loop electrodes is elongated in the second direction, and
wherein each of the second loop electrodes is elongated in the first direction; and
first selection circuitry coupled to the plurality of first loop electrodes of the position detection sensor,
wherein the first selection circuitry, in operation, simultaneously selects two of the plurality of first loop electrodes, connects a first terminal of each of the two of the plurality of first loop electrodes to a first one of two first common terminals, and connects a second terminal of each of the two of the plurality of first loop electrodes to a second one of the two first common terminals, without connecting the plurality of first loop electrodes other than the two of the plurality of first loop electrodes to the two first common terminals, and
wherein the two of the plurality of first loop electrodes change sequentially over time from a first two of the plurality of first loop electrodes to a last two of the plurality of first loop electrodes.