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公开(公告)号：US11644925B2
公开(公告)日：2023-05-09
申请号：US16985074
申请日：2020-08-04
Applicant: Alps Alpine Co., Ltd.
Inventor： Tomoki Yamada
IPC: G06F3/041 , G06F3/044 , H03K17/955
CPC classification number: G06F3/0418 , G06F3/044 , H03K17/955 , G06F2203/04108
Abstract: An input apparatus includes a detection unit that repeatedly generates a detection signal according to a degree of proximity of the object, a drift simulation unit that generates a drift simulated signal that undergoes a change having correlation with a drift in the detection signal due to repeated generation of the detection signal in the detection unit, and a correction unit that corrects the detection signal according to the change in the drift simulated signal at least one of when repeated generation of the detection signal in the detection unit is started and when an interval for repeatedly generating the detection signal in the detection unit is changed.
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公开(公告)号：US12164730B2
公开(公告)日：2024-12-10
申请号：US17455728
申请日：2021-11-19
Applicant: Alps Alpine Co., Ltd.
Inventor： Jared Bytheway , Tomoki Yamada
IPC: G06F3/044 , B60R16/027 , B62D1/04 , G01R27/26 , G01V3/08
Abstract: A human body detecting sensor system includes a first electrode, a second electrode, a drive circuit, a detection circuit, and a comparison circuit. The second electrode is connected to the first electrode via a capacitor. The drive circuit generates a first signal having a prescribed frequency for driving the first electrode. The detection circuit detects a second signal generated at the second electrode in response to the first signal being supplied to the first electrode. The comparison circuit compares the first signal with the second signal. The comparison circuit detects a touch and/or an approach of an object, which has an impedance in a certain range corresponding to a human body, with respect to at least one of the first and second electrodes when a phase difference between the first signal and the second signal is within a prescribed range.
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公开(公告)号：US20230161065A1
公开(公告)日：2023-05-25
申请号：US17455728
申请日：2021-11-19
Applicant: Alps Alpine Co., Ltd.
Inventor： Jared Bytheway , Tomoki Yamada
IPC: G01V3/08 , G01R27/26 , B62D1/04 , B60R16/027
CPC classification number: G01V3/088 , B60R16/027 , B62D1/046 , G01R27/2605
Abstract: A human body detecting sensor system includes a first electrode, a second electrode, a drive circuit, a detection circuit, and a comparison circuit. The second electrode is connected to the first electrode via a capacitor. The drive circuit generates a first signal having a prescribed frequency for driving the first electrode. The detection circuit detects a second signal generated at the second electrode in response to the first signal being supplied to the first electrode. The comparison circuit compares the first signal with the second signal. The comparison circuit detects a touch and/or an approach of an object, which has an impedance in a certain range corresponding to a human body, with respect to at least one of the first and second electrodes when a phase difference between the first signal and the second signal is within a prescribed range.
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公开(公告)号：US11360661B2
公开(公告)日：2022-06-14
申请号：US16010793
申请日：2018-06-18
Applicant: ALPS ALPINE CO., LTD.
Inventor： Tomoki Yamada
Abstract: A handwriting input device, in response to a handwriting operation that moves an object on an input surface with the object contacting the input surface, inputs information corresponding to the path of the contact position of the object on the input surface. The handwriting input device includes a sensor part and a determining part. The sensor part detects the contact position of the object on the input surface and the presence or absence of the object within a predetermined operation space adjacent to the input surface. The determining part determines the start and the end of the handwriting operation based on the detection result of the sensor part. The determining part determines the continuance of the handwriting operation in response to detecting the presence of the object within the operation space by the sensor part after determining the start of the handwriting operation.
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公开(公告)号：US11847281B2
公开(公告)日：2023-12-19
申请号：US17518388
申请日：2021-11-03
Applicant: Alps Alpine Co., Ltd.
Inventor： Tomoki Yamada
CPC classification number: G06F3/044 , G01D5/2405 , G06F3/0416 , B62D1/06 , G06F2203/04107 , G06F2203/04108
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.
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Patent Agency Ranking
公开(公告)号：US11782556B2
公开(公告)日：2023-10-10
申请号：US17728309
申请日：2022-04-25
Applicant: Alps Alpine Co., Ltd.
Inventor： Tomoki Yamada
CPC classification number: G06F3/04186 , G06F3/044 , G06F3/04182
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.
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公开(公告)号：US10761666B2
公开(公告)日：2020-09-01
申请号：US16282570
申请日：2019-02-22
Applicant: ALPS ALPINE CO., LTD.
Inventor： Shinichi Sagawai , Tomoki Yamada
IPC: G06F3/044 , G06F3/0354 , G06F3/041 , H03K17/955
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.
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公开(公告)号：US11444623B2
公开(公告)日：2022-09-13
申请号：US17188873
申请日：2021-03-01
Applicant: Alps Alpine Co., Ltd.
Inventor： Tomoki Yamada
IPC: G06F3/044 , G01D5/24 , H03K17/955 , G06F3/041
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.
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公开(公告)号：US11327100B2
公开(公告)日：2022-05-10
申请号：US16833886
申请日：2020-03-30
Applicant: ALPS ALPINE CO., LTD.
Inventor： Tatsumi Fujiyoshi , Takashi Sasaki , Tomoki Yamada
Abstract: An electrostatic sensor includes a detection electrode, a shield electrode provided in a periphery of the detection electrode, a first power supply coupled to the detection electrode and configured to generate an AC voltage having a first amplitude, a second power supply coupled to the shield electrode and configured to generate an AC voltage having a second amplitude, a measuring device configured to measure a quantity of charge flowing from the first power supply to the detection electrode, and a control device coupled to the measuring device. The AC voltages generated by the first and second power supplies have the same frequency and the same phase. The second amplitude is larger than the first amplitude. A detection target on a side of a detection surface is detected based on a change in an electrostatic capacitance between the detection electrode and the detection target.
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公开(公告)号：US11143526B2
公开(公告)日：2021-10-12
申请号：US16411245
申请日：2019-05-14
Applicant: ALPS ALPINE CO., LTD.
Inventor： Suguru Wada , Tomoki Yamada , Toru Takahashi
Abstract: A capacitive sensor has first electrodes, a second electrode, and a third electrode, which are disposed at places where a manipulating body that is part of a human body such as a finger is detected. The capacitive sensor also has a capacitance detecting means and a deciding means. The deciding means identifies the number of manipulating bodies and directions (positions) according to the capacitances of the first electrodes, second electrode, and third electrode.
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