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    Dynamic noise cancellation using noise patterns
    1.
    发明授权
    Dynamic noise cancellation using noise patterns 有权

    公开(公告)号：US11211700B1

    公开(公告)日：2021-12-28

    申请号：US16298723

    申请日：2019-03-11

    Applicant: Amazon Technologies, Inc.

    Inventor： Akshay Mohan ,  Yue Zheng ,  Deepak Pai Hosadurga ,  Jagan Vaidyanathan Rajagopalan

    IPC: G05B19/04 ,  H01Q3/08 ,  H01Q1/32 ,  B25J13/00 ,  B25J9/16

    Abstract: Technologies for dynamic noise cancelation using noise patterns are described. One device includes a moveable assembly having first and second degrees of freedom. A component within the base assembly radiates electromagnetic energy in a radiation pattern as a noise source when operating and an antenna, coupled to a receiver, is disposed on the support member. The processing device, using noise profile data about the radiation pattern of the noise source, determines that the component is operating and a current angle between the component and the antenna. The processing device determines a difference value between the current angle and the first angle and causes the moveable assembly to move at least one of the antenna or the base assembly according to the difference value.

    Methods and systems for using shared antennas for multi-protocol communication
    4.
    发明授权
    Methods and systems for using shared antennas for multi-protocol communication 有权

    公开(公告)号：US10531316B1

    公开(公告)日：2020-01-07

    申请号：US16023382

    申请日：2018-06-29

    Applicant: Amazon Technologies, Inc.

    Inventor： Ravi Ichapurapu ,  Sameet Ramakrishnan ,  Jagan Vaidyanathan Rajagopalan ,  Jay Shah ,  Rohit Sammeta

    IPC: H04B7/00 ,  H04W24/02 ,  H04W76/23 ,  H04W48/18 ,  H04W36/30 ,  H04W72/04 ,  H04W88/10

    Abstract: Systems, methods, and computer-readable media are disclosed for using shared antennas for multi-protocol communication. Example devices may include a first antenna, a second antenna, memory and at least one processor configured to access the memory and execute computer-executable instructions to determine a first request for a first wireless radio to transmit first data for a first duration, determine a second request for a second wireless radio to receive second data during the first duration, and determine that a first signal strength associated with the first wireless radio is less than or equal to a first threshold. Certain embodiments may be configured to determine that communication associated with the first wireless radio has a higher priority than communication associated with the second wireless radio, cause the first wireless radio to transmit the first data using a first antenna for the first duration, and cause a second antenna to be idle.

    Device connector with reduced electromagnetic noise
    6.
    发明授权
    Device connector with reduced electromagnetic noise 有权

    公开(公告)号：US09887497B1

    公开(公告)日：2018-02-06

    申请号：US15179522

    申请日：2016-06-10

    Applicant: Amazon Technologies, Inc.

    Inventor： Jagan Vaidyanathan Rajagopalan ,  Akshay Mohan

    IPC: H01R13/6597 ,  H01R12/70 ,  H04N21/4363

    CPC classification number: H04N21/43635 ,  H01R13/6594 ,  H01R13/6599

    Abstract: An apparatus includes a circuit board including a contact pad. The circuit board includes one or more chips on the circuit board. The circuit board further includes a signal pin having a first end, a second end, and an intermediate portion between the first end and the second end. The first end of the signal pin is in contact with the contact pad, where the signal pin has a resonant frequency outside a predetermined frequency range. The apparatus includes a lossy dielectric material surrounding the intermediate portion of the signal pin, where the lossy dielectric material is configured to absorb radio frequency signals from the signal pin in the predetermined frequency range.

    Adaptive impedance matching interface
    7.
    发明授权
    Adaptive impedance matching interface 有权

    公开(公告)号：US09819991B1

    公开(公告)日：2017-11-14

    申请号：US15056954

    申请日：2016-02-29

    Applicant: Amazon Technologies, Inc.

    Inventor： Jagan Vaidyanathan Rajagopalan ,  Akshay Mohan ,  Mudit Sunilkumar Khasgiwala ,  Duck Ho Bae

    IPC: H04N7/00 ,  H04N11/00 ,  H04N21/426 ,  H04N5/21 ,  H04N21/4363

    CPC classification number: H04N21/42607 ,  G09G5/006 ,  H04N5/21 ,  H04N5/44 ,  H04N21/43635

    Abstract: A device is described. The device includes a data interface connector, an application processor, and interface circuitry. The application processor can receive signals via an antenna. The interface circuitry can be coupled between the application processor and the data interface connector. The data interface circuitry can determine a change in a signal property of one of the signals, the change being caused by an impedance mismatch between the data interface connector and a media consumption device. The data interface circuitry can also send the application processor a signal property setting corresponding with the change. The application processor can adjust the signal property of a subsequent one of the signals, in response to the signal property setting from the interface circuitry, to obtain an adjusted signal. The application processor can also send the adjusted signal to the media consumption device.

    Media streaming devices with noise mitigation
    8.
    发明授权
    Media streaming devices with noise mitigation 有权

    公开(公告)号：US10356142B1

    公开(公告)日：2019-07-16

    申请号：US15154252

    申请日：2016-05-13

    Applicant: Amazon Technologies, Inc.

    Inventor： Jagan Vaidyanathan Rajagopalan ,  Amit Shailesh Gaikwad

    IPC: H04N7/16 ,  H04L29/06 ,  H04W84/12

    Abstract: Systems, methods, and computer-readable media are disclosed for streaming media content. The systems, methods, and computer-readable media described herein may improve user experiences and reduce device failures by mitigating problems between devices. In an example method described herein, a media streaming device may be connected to a display device in order to facilitate streaming of content. A processing apparatus of the media streaming device may determine that the display device is not presenting content streamed from the media streaming device and in turn switch the antenna radiation pattern from a first pattern to a second pattern.

    Low noise high-speed data connectors
    9.
    发明授权
    Low noise high-speed data connectors 有权

    公开(公告)号：US10249991B1

    公开(公告)日：2019-04-02

    申请号：US15638111

    申请日：2017-06-29

    Applicant: Amazon Technologies, Inc.

    Inventor： Akshay Mohan ,  Jagan Vaidyanathan Rajagopalan ,  Deepak Pai Hosadurga

    IPC: H01R13/648 ,  H01R13/6591 ,  H01R13/6477 ,  H01R13/04 ,  H01R13/46 ,  H01R13/40 ,  H01R12/52 ,  H01R13/6461 ,  H01R24/00 ,  H05K1/02

    Abstract: High-speed data connectors having a variety of different implementations to address unwanted electromagnetic radiation and interference are described. In some instances, resonant unit structures are added within the existing connector cavity that absorb and dampen unwanted electromagnetic radiation. In other instances, resonant unit structures are added to the exterior of the connector to reduce and eliminate surface currents that can occur on the solid metal shield of the connector. In these and other instances, the resonant unit structure can be formed from a stacked structure having a resonant structure arranged in close proximity to some of the connector pins to absorb unwanted radiation from those pins. The absorbed energy is transferred to ground through other components in the stack. In still other instances, various different materials are provided to replace the conventional plastic material that is used to keep the connector pins in place and in alignment. The different materials can absorb unwanted electromagnetic radiation, and can be selected to address particular frequency ranges.

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