公开(公告)号：US20250028420A1

公开(公告)日：2025-01-23

申请号：US18910469

申请日：2024-10-09

Applicant: Alps Alpine Co., Ltd.

Inventor： Tomoki YAMADA

IPC: G06F3/044

Abstract: A capacitive detection device includes a sensor electrode, a shield electrode, a first voltage output unit configured to output a first alternating current voltage, a second voltage output unit configured to apply, to the shield electrode, a second alternating current voltage having a same frequency and phase as the first alternating current voltage and amplitude larger than that of the first alternating current voltage, a detection unit, an adjustment electrode, and a voltage setting configured to output, to the adjustment electrode, a third alternating current voltage having a same frequency and phase as the first alternating current voltage and amplitude smaller than that of the first alternating current voltage or a third alternating current voltage having a same frequency as the first alternating current voltage and a phase opposite to that of the first alternating current voltage or configured to set the adjustment electrode to a fixed potential.

公开(公告)号：US20220244832A1

公开(公告)日：2022-08-04

申请号：US17728309

申请日：2022-04-25

Applicant: Alps Alpine Co., Ltd.

Inventor： Tomoki YAMADA

IPC: G06F3/041 ,  G06F3/044

Abstract: A capacitive sensor includes a sensor unit including a detection electrode, a capacitance detection unit configured to detect a capacitance value of the detection electrode of the sensor unit, a difference value calculation unit configured to calculate a difference value between the capacitance value and a reference value, a filter calculation unit configured to perform a time-directional filtering process using a filter parameter on the difference value and calculate a filter calculation value, a determination unit configured to determine a condition around the sensor unit on the basis of the filter calculation value calculated by the filter calculation unit, and a filter parameter calculation unit configured to calculate the filter parameter on the basis of the difference value calculated by the difference value calculation unit.

公开(公告)号：US20240248567A1

公开(公告)日：2024-07-25

申请号：US18627019

申请日：2024-04-04

Applicant: Alps Alpine Co., Ltd.

Inventor： Tomoki YAMADA

IPC: G06F3/044

CPC classification number: G06F3/044

Abstract: The position detection device includes a detector that detects degrees of contact or degrees of proximity of an object to an operation surface at a plurality of detection positions on the operation surface and outputs a plurality of detection data representing the degrees at the plurality of detection positions, a coordinate calculator for calculating a spatial coordinate of the object in a spatial coordinate system having a first axis and a second axis included in a plane parallel to the operation surface and a third axis, based on the plurality of detection data detected by the detector, and a coordinate corrector that corrects a coordinate value of the first axis or a coordinate value of the second axis in the spatial coordinate based on a coordinate value of the third axis in the spatial coordinate calculated by the coordinate calculator.

公开(公告)号：US20230194310A1

公开(公告)日：2023-06-22

申请号：US18154548

申请日：2023-01-13

Applicant: Alps Alpine Co., Ltd.

Inventor： Tomoki YAMADA

IPC: G01D3/032 ,  G06F3/041

CPC classification number: G01D3/032 ,  G06F3/041

Abstract: A measurement device includes N (N≥2) sensors, a selection unit configured to select a predetermined combination of sensors in each measurement and output a detection value to each of M (M

公开(公告)号：US20220057874A1

公开(公告)日：2022-02-24

申请号：US17518388

申请日：2021-11-03

Applicant: Alps Alpine Co., Ltd.

Inventor： Tomoki YAMADA

IPC: G06F3/044 ,  G06F3/041 ,  G01D5/24

Abstract: A self-capacitance-system electrostatic-capacitance detection sensor includes: a first electrode and a second electrode, one of the first and second electrodes being set as a sense electrode, and the other of the first and second electrodes being set as a drive electrode; a sense-signal generating unit that generates a sense signal to be applied to the sense electrode; a detecting unit that detects, as a detection value, an amount of charge movement corresponding to an electrostatic capacitance of the sense electrode; and a determining unit that determines whether or not a detection target is in close proximity to both the first and second electrodes, based on a subtraction difference between detection values detected by the detecting unit when a first drive signal is applied to the drive electrode and when a second drive signal having the same frequency and a different phase is applied to the drive electrode.

公开(公告)号：US20250119140A1

公开(公告)日：2025-04-10

申请号：US18982522

申请日：2024-12-16

Applicant: Alps Alpine Co., Ltd.

Inventor： Tomoki YAMADA ,  Makoto ABE ,  Toshiki NAKAMURA

IPC: H03K17/96 ,  H05B45/30 ,  H05B47/115

Abstract: An input device includes: a light-emitting diode; a switching element connected in series with the light-emitting diode, the switching element switching the light-emitting diode between the on and off states; an electrostatic sensor having a detection electrode capacitively coupled to a circuit portion disposed between the light-emitting diode and the switching element; and a capacitor having a first terminal connected to the circuit portion and a second terminal connected to a fixed potential point.

公开(公告)号：US20200257430A1

公开(公告)日：2020-08-13

申请号：US16785830

申请日：2020-02-10

Applicant: ALPS ALPINE CO., LTD.

Inventor： Naoyuki HATANO ,  Tomoki YAMADA

IPC: G06F3/041 ,  G06F3/044

Abstract: A position outputting device that includes sensing electrodes disposed along an operational surface operated by an object, the operational surface having an operational area, the operational area having a boundary area and an inner area, a position detector configured to detect a position where the object touches the operational surface based on capacitances, the sections including first sections and second sections, the first sections being located in the inner area, the second sections being located in the boundary area, and a determiner configured to determine to output the position data in response to the peak value being detected in one of the first sections and if the difference between the peak value detected in the one of the first sections and the capacitance detected in one of the second sections neighboring the one of the first sections is not more than a predetermined value.

公开(公告)号：US20190187838A1

公开(公告)日：2019-06-20

申请号：US16282570

申请日：2019-02-22

Applicant: ALPS ALPINE CO., LTD.

Inventor： Shinichi SAGAWAI ,  Tomoki YAMADA

IPC: G06F3/044 ,  H03K17/955 ,  G06F3/0354

Abstract: An input device includes a sensor that detects a degree of proximity of an object in each of one or more detection regions on an operation surface, generates one or more sets of detection data corresponding to the detection result for each of the detection regions, and thereby generates N sets of the detection data in total; and an element data generator that generates, based on the N sets of the detection data, M (M is a natural number greater than N) sets of element data indicating degrees of proximity of the object in M sections that virtually divide the operation surface. The element data generator is configured to repeat a data generation process at least two times.

公开(公告)号：US20210184675A1

公开(公告)日：2021-06-17

申请号：US17188873

申请日：2021-03-01

Applicant: Alps Alpine Co., Ltd.

Inventor： Tomoki YAMADA

IPC: H03K17/955 ,  G06F3/044 ,  G01D5/24

Abstract: A sensor device has: a sensor unit that outputs a sinusoidal detection signal having an amplitude matching a physical quantity to be detected; a reference signal creator that creates a first sinusoidal reference signal having the same frequency and phase as the detection signal; and a demodulator that multiplies the detection signal by the first reference signal and creates, as a first demodulation signal matching the physical quantity, a signal matching a direct-current component included in a signal resulting from the multiplication. The reference signal creator creates a sinusoidal second reference signal having the same frequency as the detection signal but being out of phase with the detection signal. The demodulator multiplies the detection signal by the second reference signal and creates, as a second demodulation signal matching a noise component superimposed on the detection signal, a signal matching a direct-current component included in a signal resulting from the multiplication.

公开(公告)号：US20210141486A1

公开(公告)日：2021-05-13

申请号：US17154964

申请日：2021-01-21

Applicant: ALPS ALPINE CO., LTD.

Inventor： Tomoki YAMADA

IPC: G06F3/041 ,  G06F3/044

Abstract: A capacitance sensor includes N electrode groups arranged in a detection area, each of which includes at least one electrode, a capacitance detection unit configured to detect capacitance of capacitors formed between an object and the electrode for individual electrodes, a sum calculation unit configured to add detection values of the capacitance obtained for individual electrodes based on a result of the detection performed by the capacitance detection unit for individual electrode groups so as to calculate sum totals of the detection values for individual N electrode groups, and a determination unit configured to determine whether a detection result of the capacitance detection unit is affected by noise based on the N sum totals calculated for the N electrode groups.