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    Method of determining terminal velocity of a free-falling body
    91.
    发明授权
    Method of determining terminal velocity of a free-falling body 失效
    确定自由下垂体终端速度的方法

    公开(公告)号：US3602876A

    公开(公告)日：1971-08-31

    申请号：US3602876D

    申请日：1969-05-06

    Applicant: US NAVY

    Inventor： GERARD ROBERT D

    IPC: G01P5/24 ,  G01S11/14

    CPC classification number: G01P5/242 ,  G01S11/14

    Abstract: The disclosure concerns a method for determining the terminal velocity in water of bodies having various hull shapes through the use of doppler techniques wherein a coherent oscillator on the body is matched with a reference oscillator and the signals from the oscillators are mixed during fall. A stable doppler frequency occurs at terminal velocity and the cessation of doppler frequency indicates that the body has impacted on the bottom or the run is ended.

    Environmentally aware remote control
    94.
    发明授权
    Environmentally aware remote control 有权

    公开(公告)号：US12117513B2

    公开(公告)日：2024-10-15

    申请号：US17332353

    申请日：2021-05-27

    Applicant: Roku, Inc.

    Inventor： Eric Casten Riepling

    IPC: G01S11/14

    CPC classification number: G01S11/14

    Abstract: Disclosed herein are system, apparatus, article of manufacture, computer-implemented method, and/or computer-program product (computer-readable non-transitory storage medium) embodiments, and/or combinations and sub-combinations thereof, for an environmentally aware remote control. An example embodiment operates by at least one processor detecting a first signal and a second signal and receiving information corresponding to at least a physical position where a user is located relative to at least the first physical source. The at least one processor may further operate by calculating a time difference between a given sample of the first signal and a corresponding sample of a second signal at the physical position where the user is located, and adjusting a relative timing of the first signal with respect to the second signal. In some further embodiments, the at least one processor may adjust other attributes of either signal besides timing, e.g., audio characteristics such as volume, pitch, other filtering, etc.

    Methods and apparatuses for distance measurement
    96.
    发明授权
    Methods and apparatuses for distance measurement 有权

    公开(公告)号：US12072407B2

    公开(公告)日：2024-08-27

    申请号：US16527019

    申请日：2019-07-31

    Applicant: Sony Corporation

    Inventor： Dimitri Torfs ,  Hugo Embrechts ,  Gonzalo Bailador del Pozo

    IPC: G01S11/14

    CPC classification number: G01S11/14

    Abstract: The present disclosure relates to a distance measurement system The system comprises a transmitter device and a receiver device. The transmitter device and the receiver device are clock-synchronized to each other. The transmitter device is configured to emit an ultrasonic signal at one or more predefined transmit times known to the transmitter and the receiver device. The receiver device is configured to receive the ultrasonic signal and to estimate a distance between the transmitter device and the receiver device based on the received ultra-sonic signal and the one or more predefined transmit times.

    Underwater acoustic target ranging method based on feature extraction and neural network
    97.
    发明授权
    Underwater acoustic target ranging method based on feature extraction and neural network 有权

    公开(公告)号：US12038491B2

    公开(公告)日：2024-07-16

    申请号：US17606920

    申请日：2020-08-24

    Applicant: SOOCHOW UNIVERSITY

    Inventor： Zhongzhe Xiao ,  Min Huang ,  Junjun Jiang ,  Tuo Shi ,  Di Wu

    IPC: G01S11/14

    CPC classification number: G01S11/14

    Abstract: The present invention provides an underwater acoustic target ranging method based on feature extraction and a neural network, including: acquiring underwater acoustic signals transmitted by an underwater acoustic target at different distances, dividing data by seconds, and using data of one second as one sample; performing framing on each sample; and separately calculating a zero-crossing rate of a time domain waveform, the second, fifth, and eighth coefficients of MFCC, a spectral centroid, a spectral skewness, a spectral entropy, and a spectral sharpness for each frame of data of each sample. In the underwater acoustic target ranging method based on feature extraction and a neural network provided in the present invention, the received underwater acoustic signal data is directly processed, so that the real-time performance is high and the reaction speed is fast.

    Intelligent user interfaces for playback devices
    98.
    发明授权
    Intelligent user interfaces for playback devices 有权

    公开(公告)号：US12032872B2

    公开(公告)日：2024-07-09

    申请号：US17957883

    申请日：2022-09-30

    Applicant: Sonos, Inc.

    Inventor： Brandon Lynne ,  Jodi Vautrin ,  Edwin Joseph Fitzpatrick, III ,  Jason Yore

    IPC: G06F3/16 ,  G01S11/14

    CPC classification number: G06F3/165 ,  G01S11/14

    Abstract: An example playback device is configured to (i) detect, while the graphical display is in a sleep state, that a user is proximate to the playback device, (ii) cause a graphical display to exit a sleep state and present a GUI including a list of selectable quick start icons, each quick start icon corresponding to a respective command to begin playback of respective media content, where the list does not include information identifying the respective media content, (iii) determine that a predetermined period of time has passed after causing the graphical display to exit the sleep state, (iv) update the graphical display to include information identifying the respective media content corresponding to each quick start icon, (v) detect an input selecting one of the quick start icons via the graphical display, and (vi) based on detecting the input, begin to play back the media content corresponding to the selected one of the quick start icons.

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