公开(公告)号：US11863173B2

公开(公告)日：2024-01-02

申请号：US16543874

申请日：2019-08-19

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Peter Spevak

IPC: H03K17/96 ,  G06F3/044 ,  H03K17/955 ,  G01R27/26 ,  H01L49/02

CPC classification number: H03K17/962 ,  G01R27/2605 ,  G06F3/044 ,  H01L28/60 ,  H03K17/955 ,  H03K2017/9602

Abstract: A system includes a housing, a sensing electrode disposed within the housing, and a connecting electrode. The system also includes a capacitive sensing circuit galvanically connected to the connecting electrode at a first port, but not to the sensing electrode. The capacitive sensing circuit is configured to determine a first capacitance between the first port and a ground. The first capacitance includes a variable capacitance between the connecting electrode and a person when the person is touching the housing.

公开(公告)号：US20180164902A1

公开(公告)日：2018-06-14

申请号：US15725707

申请日：2017-10-05

Applicant: Texas Instruments Incorporated

Inventor： Peter Spevak

IPC: G06F3/0362 ,  G06F3/044 ,  G06F3/03 ,  G06F3/038

CPC classification number: G06F3/0362 ,  G06F3/0308 ,  G06F3/038 ,  G06F3/044

Abstract: Disclosed examples include optical and capacitive position detection systems and user interface control apparatus to detect relative positions of a stationary first structure and a movable second structure. The optical system includes pairs of optical source and sensor devices spaced along a first direction on the first structure and a reflector extending along the first direction on the second structure to selectively reflect light from one of the optical sources to the corresponding optical sensor of a given pair when the reflector is proximate the given pair. The capacitive sensing system includes capacitor plate structures on the first structure and a conductive structure on the second structure to move along the first direction to selectively modify a capacitance of a given group of two or more of the plate structures. The detection system also includes an interface circuit to provide a position signal representing the relative position of the first and second structures according to signals from the optical sensors and the capacitor plate structures.

公开(公告)号：US11499845B2

公开(公告)日：2022-11-15

申请号：US16532652

申请日：2019-08-06

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Peter Spevak

IPC: G01D5/241 ,  H02K11/28

Abstract: An apparatus includes a first electrode, a second electrode, and a third electrode having first and second opposing surfaces. The first opposing surface is adjacent the first electrode and separated from the first electrode by a first distance, and the second opposing surface is adjacent the second electrode and separated from the second electrode by a second distance. The third electrode is configured to move relative to the first and second electrodes. A capacitance sensing circuit is coupled to the first and second electrodes. The capacitive sensing circuit is configured to determine a capacitance using the first and second electrodes.

公开(公告)号：US10969250B2

公开(公告)日：2021-04-06

申请号：US16374190

申请日：2019-04-03

Applicant: Texas Instruments Incorporated

Inventor： Peter Spevak

IPC: G01R27/26 ,  G01D5/24 ,  G01N27/22 ,  G01N27/24 ,  G06F3/038 ,  G06F3/0362 ,  G01D5/241 ,  G01R31/28 ,  G01R31/64 ,  G06F3/041

Abstract: Described example user interface control apparatus includes a first structure, with a first side, conductive capacitor plate structures spaced along a first direction on the first side, a movable second structure with an auxiliary conductive structure, and an interface circuit to provide excitation signals to, and receive sense signals from, the conductive capacitor plate structures to perform a mutual capacitance test and a self-capacitance test of individual ones of the conductive capacitor plate structures to determine a position of the second structure or a user's finger relative to the first structure along the first direction.

公开(公告)号：US12050751B2

公开(公告)日：2024-07-30

申请号：US17564499

申请日：2021-12-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Peter Spevak

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0444 ,  G06F3/0416 ,  G06F3/0445 ,  G06F3/0448 ,  G06F2203/04107

Abstract: A device includes an electrical circuit and a mutual-capacitance sensing circuit coupled to the electrical circuit. The mutual-capacitance sensing circuit includes mutual-capacitance sensing electrodes including a transmitter electrode and receiver electrode. The device also includes a conductive overlay over the mutual-capacitance sensing electrodes. The mutual-capacitance sensing circuit is configured to detect deflection of a portion of the conductive overlay relative to the mutual-capacitance sensing electrodes. The receiver electrode has a shape with an inner edge, and the transmitter electrode has a shape with an outer edge that is at least partially surrounded by the inner edge of the receiver electrode.

公开(公告)号：US20210180994A1

公开(公告)日：2021-06-17

申请号：US17190007

申请日：2021-03-02

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Peter Spevak

IPC: G01D5/24 ,  G01R27/26 ,  G01N27/22 ,  G01N27/24 ,  G06F3/038 ,  G06F3/0362 ,  G01D5/241

Abstract: Described example user interface control apparatus includes a first structure, with a first side, conductive capacitor plate structures spaced along a first direction on the first side, a movable second structure with an auxiliary conductive structure, and an interface circuit to provide excitation signals to, and receive sense signals from, the conductive capacitor plate structures to perform a mutual capacitance test and a self-capacitance test of individual ones of the conductive capacitor plate structures to determine a position of the second structure or a user's finger relative to the first structure along the first direction.

公开(公告)号：US20180217190A1

公开(公告)日：2018-08-02

申请号：US15886173

申请日：2018-02-01

Applicant: Texas Instruments Incorporated

Inventor： Peter Spevak

IPC: G01R27/26 ,  G01R31/02 ,  G01N27/24 ,  G01N27/22

CPC classification number: G01R27/2605 ,  G01D5/2405 ,  G01D5/2412 ,  G01D5/2415 ,  G01N27/228 ,  G01N27/24 ,  G01R31/028 ,  G01R31/2829 ,  G06F3/0362 ,  G06F3/0383 ,  G06F3/0416 ,  G09G2320/029

Abstract: Described example user interface control apparatus includes a first structure, with a first side, conductive capacitor plate structures spaced along a first direction on the first side, a movable second structure with an auxiliary conductive structure, and an interface circuit to provide excitation signals to, and receive sense signals from, the conductive capacitor plate structures to perform a mutual capacitance test and a self-capacitance test of individual ones of the conductive capacitor plate structures to determine a position of the second structure or a user's finger relative to the first structure along the first direction.

公开(公告)号：US11473938B2

公开(公告)日：2022-10-18

申请号：US17190007

申请日：2021-03-02

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Peter Spevak

IPC: G01R27/26 ,  G01D5/24 ,  G01N27/22 ,  G01N27/24 ,  G06F3/038 ,  G06F3/0362 ,  G01D5/241 ,  G01R31/28 ,  G01R31/64 ,  G06F3/041

Abstract: Described example user interface control apparatus includes a first structure, with a first side, conductive capacitor plate structures spaced along a first direction on the first side, a movable second structure with an auxiliary conductive structure, and an interface circuit to provide excitation signals to, and receive sense signals from, the conductive capacitor plate structures to perform a mutual capacitance test and a self-capacitance test of individual ones of the conductive capacitor plate structures to determine a position of the second structure or a user's finger relative to the first structure along the first direction.

公开(公告)号：US11249604B2

公开(公告)日：2022-02-15

申请号：US16577051

申请日：2019-09-20

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Peter Spevak

IPC: G06F3/044 ,  G06F3/041

Abstract: A device includes an electrical circuit and a mutual-capacitance sensing circuit coupled to the electrical circuit. The mutual-capacitance sensing circuit includes mutual-capacitance sensing electrodes including a transmitter electrode and receiver electrode. The device also includes a conductive overlay over the mutual-capacitance sensing electrodes. The mutual-capacitance sensing circuit is configured to detect deflection of a portion of the conductive overlay relative to the mutual-capacitance sensing electrodes. The receiver electrode has a shape with an inner edge, and the transmitter electrode has a shape with an outer edge that is at least partially surrounded by the inner edge of the receiver electrode.

公开(公告)号：US20190227107A1

公开(公告)日：2019-07-25

申请号：US16374190

申请日：2019-04-03

Applicant: Texas Instruments Incorporated

Inventor： Peter Spevak

IPC: G01R27/26 ,  G01D5/241 ,  G06F3/038 ,  G06F3/0362 ,  G01D5/24 ,  G01N27/24 ,  G01N27/22

Abstract: Described example user interface control apparatus includes a first structure, with a first side, conductive capacitor plate structures spaced along a first direction on the first side, a movable second structure with an auxiliary conductive structure, and an interface circuit to provide excitation signals to, and receive sense signals from, the conductive capacitor plate structures to perform a mutual capacitance test and a self-capacitance test of individual ones of the conductive capacitor plate structures to determine a position of the second structure or a user's finger relative to the first structure along the first direction.