SENSOR DEVICE, INTEGRATED CIRCUIT, AND METHOD FOR DETECTING INDICATOR

WIPO Patent Application WO/2023/238517

A1

[Problem] To enable any increase in electric power consumption to be prevented while substituting Tx coils with linear electrodes. [Solution] This sensor device comprises a group of linear electrodes EL that extend in parallel to each other, a group of loop coils LCx that intersect the group of linear electrodes EL, and a sensor controller 31. The sensor controller 31: sequentially sends out an alternating magnetic field from the group of linear electrodes EL; detects, by using the group of loop coils LCx, an alternating magnetic field that is generated by an indicator in response to the aforementioned alternating magnetic field; determines a linear electrode set that is composed of some linear electrodes EL from the group of linear electrodes EL on the basis of the result of detection; executes, for a plurality of instances, a process for generating an alternating magnetic field in at least some linear electrodes in the set of linear electrodes; derives the two-dimensional position of the indicator using a plurality of result values detected by at least some loop coils LCx in the group of loop coils LCx as the result of each instance of execution; and updates the linear electrode set in accordance with the derived two-dimensional position.

MIZUHASHI HIROSHI (JP)
GOTO FUMITAKA (JP)
LEE JOO HOON (JP)

PCT/JP2023/015528

December 14, 2023

April 18, 2023

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WACOM CO LTD (JP)

G06F3/046; G06F3/041

JP2017220153A	2017-12-14
JP2021103459A	2021-07-15
JP2020030762A	2020-02-27
JP2019016283A	2019-01-31
JPH07281811A	1995-10-27

PATENT ATTORNEY CORPORATION SORAOTO (JP)

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