Tamper detection
    1.
    发明授权

    公开(公告)号:US10925154B2

    公开(公告)日:2021-02-16

    申请号:US16263261

    申请日:2019-01-31

    Abstract: In described examples, an enclosure for circuitry includes a platform, a charge source, a first capacitive plate, a second capacitive plate, and a capacitive sensor. The circuitry is fixedly coupled to the platform. The first capacitive plate is also fixedly coupled to the platform, and either alone, or together with the platform, surrounds a volume containing the circuitry and the charge source, the charge source electrically coupled to and configured to charge the first capacitive plate. The second capacitive plate is fixedly coupled to the platform without touching the first capacitive plate, and either alone, or together with the platform, surrounds the first capacitive plate. The second capacitive plate is configured so that there is an electric potential difference between the first capacitive plate and the second capacitive plate. The capacitive sensor is electrically connected to the first capacitive plate and configured to determine when a capacitance between the first and second capacitive plates is changed.

    Baseband reflection modulation on power lines

    公开(公告)号:US11804873B1

    公开(公告)日:2023-10-31

    申请号:US17854636

    申请日:2022-06-30

    CPC classification number: H04B3/56

    Abstract: A transmission system includes a first device and a second device remote from the first device. The first device transmits electrical energy to a transmission line during a power provision phase, generates and transmits data symbols to the transmission line during a downstream transmission phase, and receives data symbols from the transmission line during an upstream transmission phase. The second device receives the energy from the transmission line during the power provision phase, receives the data symbols from the transmission line during the downstream transmission phase, and generates and transmits the data symbols to the transmission line during the upstream transmission phase, and the second device generates and transmits data symbols by shorting or disconnecting the transmission line. A method of transmitting electrical energy from the local device to the remote device, and communicating data symbols between the local and remote devices is also disclosed.

    TAMPER DETECTION
    3.
    发明申请

    公开(公告)号:US20210168933A1

    公开(公告)日:2021-06-03

    申请号:US17176942

    申请日:2021-02-16

    Abstract: In described examples, an enclosure for circuitry includes a platform, a charge source, a first capacitive plate, a second capacitive plate, and a capacitive sensor. The circuitry is fixedly coupled to the platform. The first capacitive plate is also fixedly coupled to the platform, and either alone, or together with the platform, surrounds a volume containing the circuitry and the charge source, the charge source electrically coupled to and configured to charge the first capacitive plate. The second capacitive plate is fixedly coupled to the platform without touching the first capacitive plate, and either alone, or together with the platform, surrounds the first capacitive plate. The second capacitive plate is configured so that there is an electric potential difference between the first capacitive plate and the second capacitive plate. The capacitive sensor is electrically connected to the first capacitive plate and configured to determine when a capacitance between the first and second capacitive plates is changed.

    Tamper detection
    4.
    发明授权

    公开(公告)号:US11805596B2

    公开(公告)日:2023-10-31

    申请号:US17176942

    申请日:2021-02-16

    CPC classification number: H05K1/0275 G01D5/24 G01R27/2605 H05K1/023

    Abstract: In described examples, an enclosure for circuitry includes a platform, a charge source, a first capacitive plate, a second capacitive plate, and a capacitive sensor. The circuitry is fixedly coupled to the platform. The first capacitive plate is also fixedly coupled to the platform, and either alone, or together with the platform, surrounds a volume containing the circuitry and the charge source, the charge source electrically coupled to and configured to charge the first capacitive plate. The second capacitive plate is fixedly coupled to the platform without touching the first capacitive plate, and either alone, or together with the platform, surrounds the first capacitive plate. The second capacitive plate is configured so that there is an electric potential difference between the first capacitive plate and the second capacitive plate. The capacitive sensor is electrically connected to the first capacitive plate and configured to determine when a capacitance between the first and second capacitive plates is changed.

    TAMPER DETECTION
    5.
    发明申请
    TAMPER DETECTION 审中-公开

    公开(公告)号:US20200253042A1

    公开(公告)日:2020-08-06

    申请号:US16263261

    申请日:2019-01-31

    Abstract: In described examples, an enclosure for circuitry includes a platform, a charge source, a first capacitive plate, a second capacitive plate, and a capacitive sensor. The circuitry is fixedly coupled to the platform. The first capacitive plate is also fixedly coupled to the platform, and either alone, or together with the platform, surrounds a volume containing the circuitry and the charge source, the charge source electrically coupled to and configured to charge the first capacitive plate. The second capacitive plate is fixedly coupled to the platform without touching the first capacitive plate, and either alone, or together with the platform, surrounds the first capacitive plate. The second capacitive plate is configured so that there is an electric potential difference between the first capacitive plate and the second capacitive plate. The capacitive sensor is electrically connected to the first capacitive plate and configured to determine when a capacitance between the first and second capacitive plates is changed.

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