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    Wireless Coordination of Audio Playback
    51.
    发明申请
    Wireless Coordination of Audio Playback 审中-公开

    公开(公告)号：US20190171412A1

    公开(公告)日：2019-06-06

    申请号：US16266101

    申请日：2019-02-03

    Applicant: EVA Automation, Inc.

    Inventor： Leo Lay ,  Adrian Harold Chadd ,  Haisong Wang ,  Shiwei Zhao ,  Li Li ,  Gaylord Yu

    IPC: G06F3/16 ,  H04M1/725 ,  H04N21/233 ,  H04R27/00 ,  H04L29/06 ,  H04H60/80 ,  H04N21/43 ,  H04L7/00 ,  H04L7/033 ,  H04N21/81

    Abstract: An electronic device that coordinates a playback operation is described. In particular, an interface circuit in the electronic device may calculate, based on differences between transmit times when packets were transmitted by a second electronic device and receive times of the packets, relative drift as a function of time between a clock in the interface circuit and a second clock in the second electronic device. Then, the interface circuit may adjust, based on the relative drift, a clock circuit that provides the clock to eliminate the relative drift, and may determine a remaining time offset between the clock and the second clock. Next, the interface circuit may modify a future time when the electronic device is to perform the playback operation based on the remaining time offset to determine a corrected future time, and the electronic device may perform the playback operation at the corrected future time.

    Source coordination of audio playback
    52.
    发明授权
    Source coordination of audio playback 有权

    公开(公告)号：US10296285B2

    公开(公告)日：2019-05-21

    申请号：US15678072

    申请日：2017-08-15

    Applicant: EVA Automation, Inc.

    Inventor： Leo Lay ,  Adrian Harold Chadd ,  Haisong Wang ,  Shiwei Zhao ,  Li Li ,  Gaylord Yu

    IPC: G06F17/00 ,  G06F3/16 ,  H04R27/00 ,  H04L7/00 ,  H04L7/033 ,  H04H60/80 ,  H04L29/06 ,  H04M1/725 ,  H04N21/233 ,  H04N21/81 ,  H04N21/43 ,  H04R3/12

    Abstract: An electronic device that coordinates a playback operation is described. In particular, an interface circuit in the electronic device may calculate, based on differences between transmit times when packets were transmitted by a second electronic device and receive times of the packets, relative drift as a function of time between a clock in the interface circuit and a second clock in the second electronic device. Then, the interface circuit may adjust, based on the relative drift, a clock circuit that provides the clock to eliminate the relative drift, and may determine a remaining time offset between the clock and the second clock. Next, the interface circuit may modify a future time when the second electronic device is to perform the playback operation based on the remaining time offset to determine a corrected future time, and may transmit information to the second electronic device specifying the corrected future time.

    User interface based on device-state information
    53.
    发明授权
    User interface based on device-state information 有权

    公开(公告)号：US10296276B2

    公开(公告)日：2019-05-21

    申请号：US15593282

    申请日：2017-05-11

    Applicant: EVA Automation, Inc.

    Inventor： Gaylord Yu

    IPC: G06F3/048 ,  G06F3/14 ,  G06F3/0481 ,  G06F3/0488 ,  H04N21/414 ,  G06F1/16 ,  G06F3/038 ,  G08C17/02 ,  H04M1/725 ,  H04N5/44 ,  H04N21/41 ,  H04N21/422 ,  H04N21/431 ,  H04N21/436 ,  H04N21/4363 ,  H04N21/472 ,  H04N21/482

    Abstract: A portable electronic device with a touch-sensitive display (such as a cellular telephone) provides a wireless remote control for an entertainment device (such as a consumer-electronic device). Based on device-state information that specifies a current state of the entertainment device (which is received from an audio/video (A/V) hub that communicates with the entertainment device) and one or more related states of the entertainment device, the portable electronic device may generate a user interface that includes one or more virtual command icons. Note that the one or more related states are related to the current state in a state diagram by corresponding operations that transition the entertainment device from the current state to the one or more related states. Then, the portable electronic displays the user interface on the touch-sensitive display. In this way, the portable electronic device dynamically adapts the user interface.

    Redundant links for reliable communication
    54.
    发明授权
    Redundant links for reliable communication 有权

    公开(公告)号：US10200892B2

    公开(公告)日：2019-02-05

    申请号：US15663821

    申请日：2017-07-31

    Applicant: EVA Automation, Inc.

    Inventor： Gaylord Yu

    IPC: H04W24/04 ,  H04W76/18 ,  H04W76/15 ,  H04W84/12 ,  H04W36/28

    Abstract: In order to maintain performance during wireless communication, a transmitting electronic device may concurrently and independently communicate redundant information to a receiving electronic device. In particular, information associated with a data stream may be communicated to the receiving electronic device using one or more channels by two radios using one or more wireless local area network communication protocols. The packets transmitted by the radios may preferentially include the same information. Moreover, the transmitting electronic device may attempt to maintain the redundant communication if a performance metric associated with the one or more channels degrades. For example, the transmitting electronic device may transfer communication to a different channel or may compress the information in the packets in the one or more channels if the throughput drops below a threshold value. Furthermore, the concurrent communication may allow the transmitting electronic device determine link quality without disrupting the communication of the information.

    Acoustic characterization of an unknown microphone
    55.
    发明授权
    Acoustic characterization of an unknown microphone 有权

    公开(公告)号：US10200800B2

    公开(公告)日：2019-02-05

    申请号：US15425088

    申请日：2017-02-06

    Applicant: EVA Automation, Inc.

    Inventor： Sean Thomson

    IPC: G06F3/16 ,  H04R3/04 ,  H04R29/00

    Abstract: An electronic device with a microphone is used to determine a transfer function of an environment (and, more generally, an acoustic characteristic). In particular, the electronic device may use the microphone to perform acoustic measurements when the electronic device is proximate to a speaker in the environment. Then, based on the acoustic measurements and a first predetermined transfer function of the speaker, the electronic device may calculate a transfer function of the microphone in a band of frequencies. Moreover, the electronic device may use the microphone to perform additional acoustic measurements in the environment that includes the speaker. Next, based on the additional acoustic measurements, the transfer function of the microphone and a second predetermined transfer function of the speaker, the electronic device may determine the transfer function of the environment in the same or a different band of frequencies.

    Redundant Links for Reliable Communication
    59.
    发明申请
    Redundant Links for Reliable Communication 审中-公开

    公开(公告)号：US20170332262A1

    公开(公告)日：2017-11-16

    申请号：US15663824

    申请日：2017-07-31

    Applicant: EVA Automation, Inc.

    Inventor： Gaylord Yu

    IPC: H04W24/04 ,  H04W76/02 ,  H04W84/12 ,  H04W36/28

    CPC classification number: H04W24/04 ,  H04W36/28 ,  H04W76/15 ,  H04W76/18 ,  H04W84/12

    Abstract: In order to maintain performance during wireless communication, a transmitting electronic device may concurrently and independently communicate redundant information to a receiving electronic device. In particular, information associated with a data stream may be communicated to the receiving electronic device using one or more channels by two radios using one or more wireless local area network communication protocols. The packets transmitted by the radios may preferentially include the same information. Moreover, the transmitting electronic device may attempt to maintain the redundant communication if a performance metric associated with the one or more channels degrades. For example, the transmitting electronic device may transfer communication to a different channel or may compress the information in the packets in the one or more channels if the throughput drops below a threshold value. Furthermore, the concurrent communication may allow the transmitting electronic device determine link quality without disrupting the communication of the information.

    Acoustic coordination of audio sources
    60.
    发明授权
    Acoustic coordination of audio sources 有权

    公开(公告)号：US10649716B2

    公开(公告)日：2020-05-12

    申请号：US15790001

    申请日：2017-10-22

    Applicant: EVA Automation, Inc.

    Inventor： Gaylord Yu ,  Steven Stupp

    IPC: G06F17/00 ,  G06F3/16 ,  H04R27/00 ,  H04L7/02 ,  H04N21/43 ,  H04N21/436 ,  H04N21/81 ,  H04S7/00 ,  H04L29/06 ,  H04N21/8547 ,  G11B27/10 ,  H04W4/02 ,  H04W56/00 ,  G06F1/12 ,  H04R3/12

    Abstract: An audio/video (A/V) hub that coordinates playback of audio content is described. In particular, the A/V hub may calculate current time offsets between clocks in electronic devices (such as electronic devices that include speakers) and a clock in the A/V hub based on measured sound corresponding to one or more acoustic-characterization patterns, one or more times when the electronic devices output the sound and the one or more acoustic-characterization patterns. Then, the A/V hub may transmit, to the electronic devices, one or more frames that include audio content and playback timing information, which may specify playback times when the electronic devices are to playback the audio content based on the current time offsets. Moreover, the playback times of the electronic devices may have a temporal relationship so that the playback of the audio content by the electronic devices is coordinated.

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