REMOTE POWERED CONTACTLESS CARD
    232.
    发明公开

    公开(公告)号:US20230385593A1

    公开(公告)日:2023-11-30

    申请号:US18316964

    申请日:2023-05-12

    CPC classification number: G06K19/07773

    Abstract: In an embodiment an electronic device includes a first electronic circuit having a capacitive element with a variable capacitance, wherein the first electronic circuit is configured to couple the capacitive element to an antenna, to measure, by successive iterations, a first analog signal representative of a variation of an instantaneous electric power received by the antenna or representative of the instantaneous electric power received by the antenna and to modify the capacitance of the capacitive element until an amplitude of the instantaneous electric power received by the antenna is a maximum, wherein the antenna is configured to capture an amplitude-modulated electromagnetic field.

    SWITCH AND SAMPLING CIRCUIT
    233.
    发明公开

    公开(公告)号:US20230327666A1

    公开(公告)日:2023-10-12

    申请号:US18191491

    申请日:2023-03-28

    CPC classification number: H03K17/6871 H03K17/223 H03K17/102

    Abstract: In an embodiment a switch includes a first MOS transistor having its source connected to its channel-forming region and coupled with a first terminal of the switch, its drain coupled with a second terminal of the switch, and its gate connected to a first node of the switch, a diode coupling the first terminal with the first node, a capacitive element coupling a third terminal of the switch with the first node, the third terminal being configured to receive a control signal for the switch and a discharge circuit coupling the first node with the first terminal, the discharge circuit configured to conduct only when a voltage between the first node and the first terminal is greater than or equal to a threshold.

    Voltage converter and method
    237.
    发明授权

    公开(公告)号:US11742755B2

    公开(公告)日:2023-08-29

    申请号:US17388591

    申请日:2021-07-29

    Inventor: David Chesneau

    CPC classification number: H02M3/158

    Abstract: An embodiment voltage converter includes a first transistor and a second transistor coupled in series, and a first circuit configured to control the first and second transistors. The control terminal of the second transistor is coupled to a first output of the first circuit by a second circuit configured to delay the control signals supplied at the first output by a first duration. The control terminal of the first transistor is coupled to a second output of the first circuit by a circuit configured to delay the control signals supplied at the second output, for a second period of each operating cycle, by a duration equal to twice the first duration and, during a second period of each operating cycle, by a duration equal to the first duration.

    SPAD BASED INDIRECT TIME OF FLIGHT SENSING FROM SOLID STATE TRANSMITTER SCANNING

    公开(公告)号:US20230243940A1

    公开(公告)日:2023-08-03

    申请号:US18126165

    申请日:2023-03-24

    Inventor: Pascal MELLOT

    CPC classification number: G01S7/4914 G01S17/36 H01L31/107 G01S7/4865

    Abstract: Described herein is a time-of-flight ranging system and methods for its operation. The system includes an array of single photon avalanche diode (SPAD) pixels and control circuitry. The control circuitry simultaneously accumulates integrated SPAD event data from one cluster of SPAD pixels while integrating SPAD event data from another cluster during different target illuminations. The system also includes first and second VCSEL clusters, each responsible for a different target illumination. By processing and managing the data in this manner, the system can effectively reduce the time used to gather and analyze the event data, leading to faster and more accurate distance measurements.

    USB-PD supply interface and associated method

    公开(公告)号:US11710976B2

    公开(公告)日:2023-07-25

    申请号:US17187478

    申请日:2021-02-26

    CPC classification number: H02J7/00712 H02J7/007192 H02J2207/20 H02J2207/30

    Abstract: An embodiment of the present disclosure relates to a power supply interface comprising: a converter delivering a first DC voltage; a resistor connected between the converter and an output terminal of the interface delivering a second DC voltage; a first circuit delivering a second signal representative of a difference between the second DC voltage and a voltage threshold when a first signal is in a first state, and at a default value otherwise; a second circuit delivering a third signal representative of a value of a current in first resistor multiplied by a gain of the third circuit, and modifying the gain based on the second signal; and a third circuit configured to deliver a signal for controlling the converter based at least on the third signal.

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