公开(公告)号：US20240200985A1

公开(公告)日：2024-06-20

申请号：US18592183

申请日：2024-02-29

Applicant: Wacom Co., Ltd.

Inventor： Masamitsu ITO

IPC: G01D5/20 ,  G01L1/14 ,  G06F3/0354

CPC classification number: G01D5/2066 ,  G01L1/144 ,  G06F3/03545

Abstract: Provided is a position indicator of an electromagnetic induction type including a position indicator cartridge housed in a hollow portion of a housing, in which the position indicator cartridge includes a first resonant circuit including a first coil wound around a magnetic core arranged on one end of the position indicator cartridge in an axial direction of the position indicator cartridge and a first capacitor, a second coil that is independent of the position indicator cartridge provided outside of the position indicator cartridge, at a position where the second coil, in operation, is magnetically coupled to the first coil of the position indicator cartridge, and a switch turned on and off by an operation portion provided outside of the position indicator cartridge, the operation portion, in operation, receiving an operation of a user, and a closed circuit including the second coil is formed when the switch is turned on.

公开(公告)号：US11929744B2

公开(公告)日：2024-03-12

申请号：US16783291

申请日：2020-02-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Peter Spevak

IPC: G01L1/14 ,  G01D5/241 ,  G01R27/26 ,  H03K17/975

CPC classification number: H03K17/975 ,  G01D5/241 ,  G01L1/144 ,  G01R27/2605

Abstract: An apparatus includes a moveable electrode which moves along an interstitial pathway defined by four fixed electrodes. The first and second fixed electrodes are separated by a first distance. The third and fourth fixed electrodes are separated by a second distance and adjacent to the first and second fixed electrodes, respectively. A capacitance sensing circuit coupled to the four fixed electrodes determines a first capacitance using the first and second fixed electrodes and a second capacitance using the third and fourth fixed electrodes. In some examples, the apparatus also comprises fifth and sixth fixed electrodes separated by a third distance and orthogonal to the first and second fixed electrodes and seventh and eighth fixed electrodes separated by a fourth distance and orthogonal to the third and fourth fixed electrodes. The fifth and seventh fixed electrodes are adjacent, and the sixth and eighth fixed electrodes are adjacent.

公开(公告)号：US20230375419A1

公开(公告)日：2023-11-23

申请号：US18230173

申请日：2023-08-04

Applicant: PixArt Imaging Inc.

Inventor： YEN-PO CHEN ,  HAO-CHE LIU ,  YEN-CHANG CHU ,  CHIH-MING SUN

IPC: G01L1/14 ,  H05K1/11 ,  H05K1/03

CPC classification number: G01L1/144 ,  H05K1/118 ,  H05K1/0393 ,  H05K2201/10151

Abstract: There is provided a force sensor including a substrate and a polymer material layer. The substrate has a circuit layout that includes a first electrode and a second electrode configured to form a capacitor therebetween. The polymer material layer covers at least on a space between the first electrode and the second electrode, and is used to change capacitance of the capacitor while being pressed. The force sensor is arranged inside a stem of an earphone for detecting the user input.

公开(公告)号：US11761831B2

公开(公告)日：2023-09-19

申请号：US17829567

申请日：2022-06-01

Applicant: TRI-FORCE MANAGEMENT CORPORATION

Inventor： Kazuhiro Okada ,  Miho Sekine ,  Yuki Hongo

IPC: G01L1/00 ,  G01L1/22 ,  G01L1/14

CPC classification number: G01L1/2287 ,  G01L1/144

Abstract: A strain body of a force sensor according to the present invention includes a tilting structure disposed between a force receiving body and a support body, a force-receiving-body-side deformable body connecting the force receiving body and the tilting structure, and a support-body-side deformable body connecting the tilting structure and the support body. The tilting structure includes a first tilting body that extends in a second direction orthogonal to a first direction and that is elastically deformable by the action of force in the first direction.

公开(公告)号：US20230160761A1

公开(公告)日：2023-05-25

申请号：US17771818

申请日：2021-12-31

Applicant: ANHUI UNIVERSITY

Inventor： Xiaohui GUO ,  Zhiliang CHEN ,  Pengbin GUI ,  Siliang WANG ,  Wei ZENG ,  Xingang REN ,  Lixia YANG ,  Yaohua XU ,  Zhixiang HAUNG

IPC: G01L1/14

CPC classification number: G01L1/144

Abstract: A high sensitivity flexible three-dimensional force tactile sensor includes a hemispherical contact, wherein the hemispherical contact includes a tray with a groove on the surface and a hemispherical protrusion arranged in the groove. A flexible inverted cone component connected to the lower surface of the hemispherical contact, wherein a plurality of flexible triangular excitation electrode is arranged on the side surface of the flexible inverted cone component. A flexible common electrode surrounding part of the flexible triangular excitation electrode, wherein a first cavity with an opening is opened inside the flexible common electrode, parts of the flexible triangular excitation electrode and the flexible inverted cone component are arranged in the first cavity of the flexible common electrode. The flexible triangular excitation electrode and the flexible inverted cone component have no contact with the inner wall of the first cavity of the flexible common electrode to form an air cavity.

公开(公告)号：US20180209858A1

公开(公告)日：2018-07-26

申请号：US15925768

申请日：2018-03-20

Applicant: SHENZHEN GOODIX TECHNOLOGY CO., LTD.

Inventor： Lin FENG ,  Hong JIANG

IPC: G01L1/14 ,  H03F3/45

CPC classification number: G01L1/144 ,  G06F3/0416 ,  G06F3/044 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45116 ,  H03F2203/45138 ,  H03F2203/45156 ,  H03F2203/45514

Abstract: An apparatus for detecting capacitance, an electronic device and an apparatus for detecting a force are disclosed. The apparatus for detecting capacitance includes: a signal driving circuit (110), configured to periodically charge and discharge at least one capacitor to be detected; a conversion circuit (120), configured to convert a capacitance signal of the at least one capacitor to be detected into a voltage signal; and a cancellation circuit (130), configured to cancel initial capacitance of the at least one capacitor to be detected, so that the voltage signal is associated with a capacitance change of the at least one capacitor to be detected. The apparatus for detecting capacitance could improve the anti-interference performance and improve the accuracy of capacitance detection.

公开(公告)号：US09977064B2

公开(公告)日：2018-05-22

申请号：US15680912

申请日：2017-08-18

Applicant: MELEXIS TECHNOLOGIES N.V.

Inventor： Johan Raman ,  Pieter Rombouts

IPC: G01R27/28 ,  G01R31/00 ,  G01R31/28 ,  G01L9/12 ,  G01L9/06 ,  G01L9/02 ,  G01L1/22 ,  G01L1/14 ,  G01L9/04

CPC classification number: G01R31/003 ,  G01L1/144 ,  G01L1/2262 ,  G01L9/02 ,  G01L9/04 ,  G01L9/06 ,  G01L9/12 ,  G01R31/2829

Abstract: A difference measurement circuit having a first port and a second port for connection to a first set of nodes and a second set of nodes of a sensor unit. The circuit further has switching units for switching excitation signals emanating from excitation nodes from being applied to the first set of nodes (A, B) via the first port to being applied to the second set of nodes via the second port and for switching differential measurement signals measured at sensing nodes from being obtained from the second set of nodes via the second port to being obtained from the first set of nodes via the first port. The circuit further includes redundancy testing circuitry for evaluating the similarity or deviation between measurement signals obtained in different states of the switching units.

公开(公告)号：US09904395B2

公开(公告)日：2018-02-27

申请号：US15075225

申请日：2016-03-21

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Tetsuyoshi Ogura ,  Keiji Noine ,  Shinobu Masuda ,  Kenichi Ezaki

IPC: G06F3/041 ,  G01L9/12 ,  G01L1/14 ,  G06F3/044

CPC classification number: G06F3/0414 ,  G01L1/144 ,  G01L1/146 ,  G01L9/12 ,  G06F3/044 ,  G06F2203/04106

Abstract: A pressure sensor according to an aspect of the present disclosure includes: a first pressure sensitive element including a first conductive layer including first projections having conductivity, first wiring layers, and a first dielectric layer provided between the first projections and the first wiring layers; and a second pressure sensitive element including a second conductive layer including second projections having conductivity, second wiring layers, and a second dielectric layer provided between the second projections and the second wiring layers. The first pressure sensitive element and the second pressure sensitive element are stacked on each other.

公开(公告)号：US20170343594A1

公开(公告)日：2017-11-30

申请号：US15680912

申请日：2017-08-18

Applicant: MELEXIS TECHNOLOGIES N.V.

Inventor： Johan RAMAN ,  Pieter ROMBOUTS

IPC: G01R31/00 ,  G01L9/12 ,  G01L9/04 ,  G01L1/14 ,  G01L9/02 ,  G01L1/22 ,  G01R31/28 ,  G01L9/06

CPC classification number: G01R31/003 ,  G01L1/144 ,  G01L1/2262 ,  G01L9/02 ,  G01L9/04 ,  G01L9/06 ,  G01L9/12 ,  G01R31/2829

Abstract: A difference measurement circuit having a first port and a second port for connection to a first set of nodes and a second set of nodes of a sensor unit. The circuit further has switching units for switching excitation signals emanating from excitation nodes from being applied to the first set of nodes (A, B) via the first port to being applied to the second set of nodes via the second port and for switching differential measurement signals measured at sensing nodes from being obtained from the second set of nodes via the second port to being obtained from the first set of nodes via the first port. The circuit further includes redundancy testing circuitry for evaluating the similarity or deviation between measurement signals obtained in different states of the switching units.

公开(公告)号：US20170265582A1

公开(公告)日：2017-09-21

申请号：US15458625

申请日：2017-03-14

Applicant: NIKE Inc

Inventor： Steven H. Walker ,  Phillip Meneau

IPC: A43C11/16 ,  A43C1/00 ,  G01D5/24 ,  A43B17/00 ,  G05B15/02 ,  A43B13/14 ,  A43B3/00

CPC classification number: A43C11/165 ,  A43B1/0054 ,  A43B3/0005 ,  A43B3/001 ,  A43B3/0031 ,  A43B13/14 ,  A43B17/00 ,  A43C1/00 ,  A43C7/00 ,  A43C11/008 ,  A61B5/6807 ,  G01D5/12 ,  G01D5/145 ,  G01D5/24 ,  G01D5/2405 ,  G01D5/34 ,  G01L1/12 ,  G01L1/144 ,  G05B15/02 ,  G05B19/048 ,  G05B2219/24015

Abstract: A foot presence sensor system for an active article of footwear can include a sensor housing configured to be disposed at or in an insole of the article, and a controller circuit, disposed within the sensor housing, configured to trigger one or more automated functions of the footwear based on a foot presence indication. A capacitive sensor, such as disposed within or upon the sensor housing, can be configured to provide the foot presence indication. In an example, foot presence can be detected using time-varying characteristics of a signal from the capacitive sensor.