Overvoltage protection for data communication path

    公开(公告)号:US12244139B2

    公开(公告)日:2025-03-04

    申请号:US18442488

    申请日:2024-02-15

    Applicant: Google LLC

    Inventor: Yao Ding

    Abstract: A circuit for controlling an interface between an integrated circuit of an electronic device and an external device includes each of an interface control switch and an overvoltage protection switch. The interface control switch includes a controller for controlling a mode of the interface between a data communication mode that connects the external device to the integrated circuit of the electronic device via one or more communication lines of the electronic device, and a power transmission mode that connects a power source of the external device to a battery of the electronic device. The controller includes a reset line for resetting the interface control switch. The overvoltage protection switch is connected between the one or more communication ports and the reset line, and is configured to activate the reset line of the controller in response to an overvoltage condition at the one or more communication lines of the electronic device.

    Magnetic Sensing Device for Lid
    3.
    发明公开

    公开(公告)号:US20230280797A1

    公开(公告)日:2023-09-07

    申请号:US18182950

    申请日:2023-03-13

    Applicant: Google LLC

    Inventor: Yao Ding Hui Li

    CPC classification number: G06F1/1677 H02J50/10 G01R33/072

    Abstract: The technology provides for a magnetic sensing device. The device includes a magnetic sensor configured to generate a first output triggered by a first polarity and a second output triggered by a second polarity. The device includes a first magnet, a second magnet, and a third magnet. The device may be configured such that, when the second magnet is not within a predetermined distance from the first magnet, a magnetic field from the first magnet having the first polarity causes the first output and the second output to have a first set of values. The device may be configured such that, when the second magnet is within the predetermined distance from the first magnet, a magnetic field from the third magnet having the second polarity causes the first output and the second output to have a second set of values.

    Hearable eNoise Reduction - Battery Ripple Containment

    公开(公告)号:US20230224638A1

    公开(公告)日:2023-07-13

    申请号:US17570594

    申请日:2022-01-07

    Applicant: Google LLC

    CPC classification number: H04R3/04 H04R1/1083 H04R1/1025 H02M1/14

    Abstract: The subject matter described herein provides systems and techniques for controlling the production of eNoise in an audio playback system. The eNoise may be an audible noise produced when a current, such as a noise/ripple current, flows through a battery of the audio playback system. Such eNoise may be reduced by limiting the current, such as noise/ripple current, flowing through the battery. In some examples, the noise/ripple current may be diverted to the main board of the audio playback system by adding a source of current. A circuit to produce such a current may include transistor(s), capacitor(s), and/or resistor(s). Using the current source and/or such a circuit may also divert the noise/ripple current away from the battery, thereby reducing the eNoise produced.

    Magnet System for Wireless Earbuds and Case
    5.
    发明公开

    公开(公告)号:US20230209245A1

    公开(公告)日:2023-06-29

    申请号:US18178180

    申请日:2023-03-03

    Applicant: Google LLC

    CPC classification number: H04R1/1091 H04R1/1016 H04R1/02

    Abstract: The present disclosure provides a magnetic system within a case for an electronic accessory. The case may include a housing portion and a lid coupled to the housing portion. Within the housing portion may be a housing magnet. The housing magnet may be oriented such that the magnetic field of the housing magnet is oriented transverse to a longitudinal axis of the case. The housing magnet may have a size and strength to magnetically couple the electronic accessory within a cavity of the housing. A hinge magnet may be located along an axis of rotation of the lid with respect to the housing. The hinge magnet and housing magnet may magnetically interact to form a bistable magnetic hinge. Thus, the one housing magnet may be large enough and have a strong enough magnetic field to perform various functions.

    USB Type-C port short protection
    6.
    发明授权

    公开(公告)号:US11233386B2

    公开(公告)日:2022-01-25

    申请号:US16287422

    申请日:2019-02-27

    Applicant: Google LLC

    Inventor: Yao Ding Hui Li

    Abstract: A short circuit protection circuit may comprise a first configuration channel line extending from a first connector, a first resistor connected to the first configuration channel line; a voltage divider connected to a junction point on the first configuration channel line, the voltage divider comprising a second resistor and a thermistor, and a field effect transistor (FET) comprising a source, gate, and drain. The thermistor may be connected to a ground line. The drain of the FET may be connected to the first resistor, the source of the FET may be connected to the ground line, and the gate of the FET may be connected to a second junction point between the second resistor and thermistor of the voltage divider.

    USB Type-C Port Short Protection
    7.
    发明申请

    公开(公告)号:US20200274346A1

    公开(公告)日:2020-08-27

    申请号:US16287422

    申请日:2019-02-27

    Applicant: Google LLC

    Inventor: Yao Ding Hui Li

    Abstract: A short circuit protection circuit may comprise a first configuration channel line extending from a first connector, a first resistor connected to the first configuration channel line; a voltage divider connected to a junction point on the first configuration channel line, the voltage divider comprising a second resistor and a thermistor, and a field effect transistor (FET) comprising a source, gate, and drain. The thermistor may be connected to a ground line. The drain of the FET may be connected to the first resistor, the source of the FET may be connected to the ground line, and the gate of the FET may be connected to a second junction point between the second resistor and thermistor of the voltage divider.

    Magnetic Sensing Device For Lid
    8.
    发明申请

    公开(公告)号:US20200233046A1

    公开(公告)日:2020-07-23

    申请号:US16672741

    申请日:2019-11-04

    Applicant: Google LLC

    Inventor: Yao Ding Hui Li

    Abstract: The technology provides for a magnetic sensing device. The device includes a magnetic sensor configured to generate a first output triggered by a first polarity and a second output triggered by a second polarity. The device includes a first magnet, a second magnet, and a third magnet. The device may be configured such that, when the second magnet is not within a predetermined distance from the first magnet, a magnetic field from the first magnet having the first polarity causes the first output and the second output to have a first set of values. The device may be configured such that, when the second magnet is within the predetermined distance from the first magnet, a magnetic field from the third magnet having the second polarity causes the first output and the second output to have a second set of values.

    Capacitive On-Head Detection Using a Magnetically-Sensitive Section

    公开(公告)号:US20250039590A1

    公开(公告)日:2025-01-30

    申请号:US18768837

    申请日:2024-07-10

    Applicant: Google LLC

    Abstract: This document describes systems and techniques for determining whether an earbud is removed from within an ear of a user. The systems and techniques employ an earbud including a housing having a distal end and a proximal end. The distal end includes a magnetically-sensitive section, the distal end of the housing being configured to be magnetically attracted to a charging receptacle and insertable within an ear of a user. On-head detection (OHD) logic is electrically coupled to the magnetically-sensitive section at the distal end, the OHD logic configured to determine based on a distal-end capacitance measured using the magnetically-sensitive section whether the distal end of the housing is within the ear of the user.

    Overvoltage Protection For Data Communication Path

    公开(公告)号:US20240186788A1

    公开(公告)日:2024-06-06

    申请号:US18442488

    申请日:2024-02-15

    Applicant: Google LLC

    Inventor: Yao Ding

    CPC classification number: H02H9/046

    Abstract: A circuit for controlling an interface between an integrated circuit of an electronic device and an external device includes each of an interface control switch and an overvoltage protection switch. The interface control switch includes a controller for controlling a mode of the interface between a data communication mode that connects the external device to the integrated circuit of the electronic device via one or more communication lines of the electronic device, and a power transmission mode that connects a power source of the external device to a battery of the electronic device. The controller includes a reset line for resetting the interface control switch. The overvoltage protection switch is connected between the one or more communication ports and the reset line, and is configured to activate the reset line of the controller in response to an overvoltage condition at the one or more communication lines of the electronic device.

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