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    Ultra wideband range extension
    31.
    发明授权
    Ultra wideband range extension 有权

    公开(公告)号：US11184810B2

    公开(公告)日：2021-11-23

    申请号：US16540301

    申请日：2019-08-14

    Applicant: Apple Inc.

    Inventor： Vusthla Sunil Reddy ,  Alejandro J. Marquez ,  Indranil S. Sen ,  Manjit S. Walia ,  Peter M. Agboh ,  Shang-Te Yang ,  Xiaoming Yu

    IPC: H04W36/00 ,  H04W64/00 ,  H04W36/30 ,  H04W76/15

    Abstract: Methods and apparatuses are presented to locate a wireless communication device. A target device may be out of range of a source device for normal ranging communications according to a first radio access technology (RAT), such as ultra wideband (UWB) communications. A source device may therefore modify communications according to the first RAT, to increase the transmit power, while removing the data payload. The target device may utilize the signal strength and angle of arrival of the modified communications to guide the user to move toward the source device, e.g., until the target device is within range to perform normal ranging communications. A second RAT, such as Bluetooth, may be used to communicate between the two devices while the target device is out of range of the first RAT. For example, the target device may use the second RAT to communicate to the source device to start/stop transmitting modified communications.

    TERAHERTZ SPECTROSCOPY AND IMAGING IN DYNAMIC ENVIRONMENTS
    33.
    发明申请
    TERAHERTZ SPECTROSCOPY AND IMAGING IN DYNAMIC ENVIRONMENTS 有权

    公开(公告)号：US20210041292A1

    公开(公告)日：2021-02-11

    申请号：US16536233

    申请日：2019-08-08

    Applicant: Apple Inc.

    Inventor： Chia-Chi Chen ,  Vusthla Sunil Reddy ,  Sireesha Ramisetti ,  Peter M. Agboh ,  Mohit Narang ,  Vijendrakumar K. Ashiwal

    IPC: G01J3/42 ,  G01N21/3581

    Abstract: Embodiments are disclosed for terahertz spectroscopy and imaging in dynamic environments. In an embodiment, a transmitter of an electronic device emits a continuous electromagnetic (EM) wave in the terahertz (THz) frequency band into a dynamic environment that includes a transmission medium that changes over time. A receiver of the electronic device, receives an EM wave reflected off an object in the environment and determines a spectral response of the reflected EM wave. The spectral response includes absorption spectra at a frequency in the THz frequency band that is indicative of a known target transmission medium. The absorption spectra of the target transmission medium and a path length of the reflected EM wave signal are used to obtain the concentration level of the target transmission medium from a reference library of known concentration levels.

    Real-time relay of wireless communications
    34.
    发明授权
    Real-time relay of wireless communications 有权

    公开(公告)号：US10681773B2

    公开(公告)日：2020-06-09

    申请号：US16238750

    申请日：2019-01-03

    Applicant: APPLE INC.

    Inventor： Lei Li ,  Xiaojun Chen ,  Vusthla Sunil Reddy ,  Peter M. Agboh ,  Mohit Narang

    IPC: H04W88/04 ,  H04L5/00 ,  H04W84/18 ,  H04W72/08 ,  H04W72/04 ,  H04W88/06 ,  H04W4/80 ,  H04L1/00

    Abstract: Exemplary embodiments include a system having a first wireless audio output device and a second wireless audio output device. One of the first or second audio output devices is configured to one of connect as a slave to a source device in a first piconet and connect as a master to the other one of the first or second audio output devices in a second piconet. The one of the first or second wireless audio output devices determines whether an audio packet transmitted by the source device via the first piconet was received by the first wireless audio output device and the second wireless audio output device, and, when at least one of the first wireless audio output device or the second wireless audio output device did not receive the audio packet, the audio packet is exchanged between the first and second wireless audio output devices via the second piconet.

    POWER ADAPTATION BASED ON ERROR RATE
    38.
    发明申请
    POWER ADAPTATION BASED ON ERROR RATE 审中-公开

    公开(公告)号：US20180146435A1

    公开(公告)日：2018-05-24

    申请号：US15874678

    申请日：2018-01-18

    Applicant: Apple Inc.

    Inventor： Mohit Narang ,  Peter M. Agboh ,  Qiyang Wu ,  Ruben Caballero ,  Vusthla Sunil Reddy ,  Xi Yang

    IPC: H04W52/20 ,  H04W52/36 ,  H04W52/24 ,  H04L12/26

    CPC classification number: H04W52/20 ,  H04L43/0847 ,  H04L43/16 ,  H04W4/80 ,  H04W52/245 ,  H04W52/246 ,  H04W52/367

    Abstract: A host device is configured to increase the power output by an internal amplifier of its wireless chipset in response to requests from a remote device. Once the internal amplifier has reached its maximum power, further requests for power increases from the remove device do not similarly lead to automatic power increases being delivered by a external amplifier of the host device. Rather, the host device determines the strength of the link between it and the remote device. If the signal strength is too low, it is an indication that the signal power output by the remote device may not be sufficient to maintain the link and that any further increases in signal power by the host device will have little or no effect on the link. However, if the signal strength from the remote device is sufficient, the host device determines an error rate between it and the remote device. If the error rate is sufficiently low to maintain the link, then the host device will not further increase its signal output power. However, if the error rate is too high, the host device will turn on and/or increase power from its external amplifier to boost the power of its output signal and, thus, improve the error rate between it and the remote device.

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