DYNAMIC GAIN ADJUSTMENT BASED ON DISTANCE TO TARGET IN AN ACTIVE LIGHT DETECTION SYSTEM

    公开(公告)号:US20230008751A1

    公开(公告)日:2023-01-12

    申请号:US17862024

    申请日:2022-07-11

    Abstract: Apparatus and method for adaptively adjusting amplifier gain based on detected distance to a target in a light detection and ranging (LiDAR) system. In some embodiments, the amplifier amplifies detected pulses obtained from a photodetector, and the gain is adjusted from among at least two selectable gain modes responsive to a measured time of flight (ToF) for the pulses. A first range of gain levels can be used for targets that are within a first maximum distance range, and a second range of gain levels can be used for targets that are beyond the first maximum distance range. Each mode can extend from a minimum to a maximum value along a selected linear slope. A gain adjustment circuit can use a Gilbert Cell or a multiplier and fully differential amplifier arrangement.

    Trusted listening
    3.
    发明授权

    公开(公告)号:US11295758B2

    公开(公告)日:2022-04-05

    申请号:US16825845

    申请日:2020-03-20

    Abstract: Devices and methods are disclosed for trusted listening. In some examples, an apparatus can include an audio receiving device having a microphone configured to capture sound and produce an audio signal, a processing unit configured to add a trusted signature to the audio signal, and an output configured to provide the audio signal. Further, a method of trusted listening can receive a first audio signal representing a real-time sound, generate a trusted signature in an audible format, and produce a second audio signal including the trusted signature.

    TRUSTED LISTENING
    4.
    发明申请

    公开(公告)号:US20210295860A1

    公开(公告)日:2021-09-23

    申请号:US16825845

    申请日:2020-03-20

    Abstract: Devices and methods are disclosed for trusted listening. In some examples, an apparatus can include an audio receiving device having a microphone configured to capture sound and produce an audio signal, a processing unit configured to add a trusted signature to the audio signal, and an output configured to provide the audio signal. Further, a method of trusted listening can receive a first audio signal representing a real-time sound, generate a trusted signature in an audible format, and produce a second audio signal including the trusted signature.

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