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    METHOD FOR ACTIVATING A VEHICLE FUNCTION AND ASSOCIATED ACTIVATION DEVICE
    1.
    发明公开
    METHOD FOR ACTIVATING A VEHICLE FUNCTION AND ASSOCIATED ACTIVATION DEVICE 审中-公开

    公开(公告)号：US20240042963A1

    公开(公告)日：2024-02-08

    申请号：US18229859

    申请日：2023-08-03

    Applicant: Continental Automotive Technologies GmbH

    Inventor： Mohamed Cheikh ,  Sébastien Chanal

    IPC: B60R25/24 ,  H04B1/7163 ,  G01S11/02 ,  G01S3/04

    CPC classification number: B60R25/245 ,  H04B1/71632 ,  G01S11/02 ,  G01S3/04 ,  H04B2201/71634 ,  H04B2201/71632

    Abstract: A method for activating a vehicle function, by an activation device including a transceiver to communicate with “hands-free” access equipment. The transceiver is equipped with a gyroscope and a magnetometer and two receiving antennas that have a coefficient of electromagnetic coupling between them that is below a threshold. The method includes the following steps for at least two consecutive footsteps: transmission of a signal comprising data of the gyroscope and the magnetometer of the “hands-free” equipment to the vehicle; comparison of the data with representative values of the gyroscope and the magnetometer of the transceiver; determination of a first direction of the user; determination of a second direction of the user based on an estimation of a first angle of arrival of the signal towards the transceiver; comparison of the first direction and the second direction; activation of the vehicle function on the basis of the result of the comparison.

    ECHO-CANCELLING ACOUSTIC DELAY CIRCUIT AND RELATED WIRELESS DEVICE OPERABLE TO DETECT A NEARBY OBJECT
    2.
    发明公开
    ECHO-CANCELLING ACOUSTIC DELAY CIRCUIT AND RELATED WIRELESS DEVICE OPERABLE TO DETECT A NEARBY OBJECT 审中-公开

    公开(公告)号：US20240036158A1

    公开(公告)日：2024-02-01

    申请号：US18348671

    申请日：2023-07-07

    Applicant: Qorvo US, Inc.

    Inventor： Nadim Khlat

    IPC: G01S7/28 ,  H04B1/7163 ,  G01S13/02 ,  G01S7/292

    CPC classification number: G01S7/2806 ,  H04B1/7163 ,  G01S13/0209 ,  G01S7/2921 ,  H04B2201/71634

    Abstract: An echo-cancelling acoustic delay circuit, which can be provided in a wireless device operable to detect a nearby object, is disclosed. Given the close proximity of the object, an echo of the emitted pulse(s) may be reflected instantaneously toward the antenna to potentially overlap with the emitted pulse(s), thus causing difficulty in detecting the reflected pulse(s). In this regard, the echo-cancelling acoustic delay circuit is provided in the wireless device to add a temporal delay in the emitted pulse(s) and the reflected pulse(s) to prevent the reflected pulse(s) from overlapping with the emitted pulse(s). In addition, the echo-cancelling acoustic delay circuit is further configured to cancel a reflection echo(s) in the emitted pulse(s) and the reflected pulse(s), thus allowing the wireless device to accurately receive the reflected pulse(s) to thereby detect the nearby object.

    DEVICE AND METHOD FOR DETERMINING THE ARRIVAL TIME OF A UWB SIGNAL
    9.
    发明申请
    DEVICE AND METHOD FOR DETERMINING THE ARRIVAL TIME OF A UWB SIGNAL 有权
    用于确定UWB信号的到达时间的装置和方法

    公开(公告)号：US20150311945A1

    公开(公告)日：2015-10-29

    申请号：US14695283

    申请日：2015-04-24

    Applicant: Commissariat A L'Energie Atomique et aux Energies Alternatives

    Inventor： Dominique MORCHE ,  Alfredo-Farid BAUTISTA DELGADO

    IPC: H04B1/7073 ,  H04L25/49

    CPC classification number: H04B1/7073 ,  H04B1/69 ,  H04B2201/7073 ,  H04B2201/71634 ,  H04L25/4902

    Abstract: A device and a method for determining the arrival time of a UWB signal including at least one pulse modulated at a carrier frequency. The receiver includes a frequency translation stage for translating the UWB signal to a first intermediate frequency and a second intermediate frequency. In an integration stage, the signals translated to the first intermediate frequency and to the second intermediate frequency are integrated on a time window to give a first integration result and a second integration result respectively. The phase deviation is determined between the first and second integration results and from this phase deviation, the arrival time of the UWB signal is deduced.

    Abstract translation: 一种用于确定包括以载波频率调制的至少一个脉冲的UWB信号的到达时间的装置和方法。 接收机包括用于将UWB信号转换为第一中频和第二中频的频率转换级。 在积分阶段，转换为第一中频和第二中频的信号被集成在时间窗上，以分别给出第一积分结果和第二积分结果。 在第一和第二积分结果之间确定相位偏差，并从该相位偏差中推导出UWB信号的到达时间。

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