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    Screen recording from a remote device
    21.
    发明授权
    Screen recording from a remote device 有权

    公开(公告)号：US11490160B2

    公开(公告)日：2022-11-01

    申请号：US16125340

    申请日：2018-09-07

    Applicant: Apple Inc.

    Inventor： Vikrant Kasarabada ,  Gennadiy Shekhtman ,  Elena Leyfman ,  Gregory R. Chapman ,  Chendi Zhang

    IPC: H04N21/241 ,  H04N21/254 ,  H04N21/258 ,  H04N21/431 ,  H04N21/433 ,  H04N21/4627 ,  H04N21/472 ,  H04N21/41 ,  H04L9/40

    Abstract: In some implementations, a first device can record a display screen of a second device remotely. For example, the first device (e.g., a remote computing device) can receive information identifying other computing devices on a network. The first device can receive a selection of one of the other computing devices (e.g., the second device) and send a message to the second device to initiate a recording of the display screen of the second device. In response to receiving the message, the second device can record video frames of images presented on the display of the second device. The second device can send the video frames to the first device for display and/or storage. While recording the images presented on the display screen, the second device can present indicia on the display screen of the second device indicating that a screen recording is in progress.

    Clock compensation for streaming media systems
    23.
    发明授权
    Clock compensation for streaming media systems 有权

    公开(公告)号：US11178202B2

    公开(公告)日：2021-11-16

    申请号：US16819816

    申请日：2020-03-16

    Applicant: Apple Inc.

    Inventor： Prashant Nandakumar ,  Zhenheng Li ,  Roger N. Pantos ,  Gregory R. Chapman

    IPC: H04L29/06 ,  H04L12/26 ,  H04L29/08

    Abstract: In one embodiment, systems, methods and non-transitory machine readable media detect differences between the rate of production, by a server, of media segments identified in an HTTP compliant playlist and the rate of consumption, by a client device, of the media segments in streaming media content. These differences, once detected, can be used to adjust a playback rate at the client to reduce the difference between the server rate and the client rate. This detection can be used in low latency streaming media contexts in which the client device is playing back content that is live, such as a live sports event happening during the playback by the client device. The adjustment of the client's playback rate can avoid running out of buffered media segments (when the client's rate is much faster than the server's rate) and can avoid increasing latency at the client device and overloading a buffer with too many media segments (when the client's rate is much slower than the server's rate).

    CLOCK COMPENSATION FOR STREAMING MEDIA SYSTEMS
    24.
    发明申请
    CLOCK COMPENSATION FOR STREAMING MEDIA SYSTEMS 有权

    公开(公告)号：US20210289017A1

    公开(公告)日：2021-09-16

    申请号：US16819816

    申请日：2020-03-16

    Applicant: Apple Inc.

    Inventor： Prashant Nandakumar ,  Zhenheng Li ,  Roger N. Pantos ,  Gregory R. Chapman

    IPC: H04L29/06 ,  H04L12/26

    Abstract: In one embodiment, systems, methods and non-transitory machine readable media detect differences between the rate of production, by a server, of media segments identified in an HTTP compliant playlist and the rate of consumption, by a client device, of the media segments in streaming media content. These differences, once detected, can be used to adjust a playback rate at the client to reduce the difference between the server rate and the client rate. This detection can be used in low latency streaming media contexts in which the client device is playing back content that is live, such as a live sports event happening during the playback by the client device. The adjustment of the client's playback rate can avoid running out of buffered media segments (when the client's rate is much faster than the server's rate) and can avoid increasing latency at the client device and overloading a buffer with too many media segments (when the client's rate is much slower than the server's rate).

    System and method for negotiating control of a shared audio or visual resource
    25.
    发明授权
    System and method for negotiating control of a shared audio or visual resource 有权

    公开(公告)号：US10541885B2

    公开(公告)日：2020-01-21

    申请号：US15785184

    申请日：2017-10-16

    Applicant: Apple Inc.

    Inventor： Andrew E. Rostaing ,  Eric S. Lee ,  Gregory R. Chapman

    IPC: H04L12/24 ,  G06F9/52

    Abstract: Systems and methods for negotiating control of a shared audio or visual resource are disclosed. A request for control of a shared audio or visual resource is received at an arbiter. The arbiter maintains existing state information for ownership of the shared audio or visual resource and ownership transition conditions of the shared audio or visual resource. The request is received from one of a process executing on an embedded system and a process executing on a mobile computing device. New state information regarding ownership of the shared audio or visual resource is determined based at least in part on the request for control and the ownership transition conditions. The new state information indicates which of the processes controls output of the shared audio or visual resource.

    Managing Playback Groups
    26.
    发明申请
    Managing Playback Groups 审中-公开

    公开(公告)号：US20190304507A1

    公开(公告)日：2019-10-03

    申请号：US16287991

    申请日：2019-02-27

    Applicant: Apple Inc.

    Inventor： Elena Leyfman ,  Thomas Alsina ,  Edward T. Schmidt ,  Deepak Iyer ,  David P. Saracino ,  Astrid Yi ,  Adam A. Sonnanstine ,  Jonathan A. Bennett ,  Gregory R. Chapman ,  Aparna S. Akella ,  Shreyas Nandagudi Sreesha ,  Johannes P. Schmidt

    IPC: G11B27/10 ,  G06F3/16 ,  H04N21/436

    Abstract: In some implementations, a system can be configured to manage groups of playback devices. For example, playback devices can be dynamically grouped in a variety of ways. Each playback device can store attributes that define the group to which the playback device belongs. Each playback device can send its group attributes to remote control devices and the remote control devices can determine groups of playback devices based on the group attributes. The remote control devices can then configure and present graphical user interfaces that represent the various groups of playback devices. In some implementations, a group of playback devices can be configured as a persistent group. For example, a pair of playback devices (e.g., wireless speakers) can store and send attribute data indicating that the pair of playback devices is a persistent group so that remote control devices can present and control the persistent group as a single device.

    Coordinated control of media playback
    30.
    发明授权
    Coordinated control of media playback 有权

    公开(公告)号：US11212808B2

    公开(公告)日：2021-12-28

    申请号：US16819597

    申请日：2020-03-16

    Applicant: Apple Inc.

    Inventor： Thomas Alsina ,  Szu-Wen Huang ,  Steven P. Bischoff ,  Nicholas J. Paulson ,  Gregory R. Chapman ,  David P. Saracino ,  Jason Ketterman

    IPC: H04W72/04 ,  G11B27/10 ,  H04L12/403 ,  H04W4/021 ,  H04W8/00 ,  H04W84/18

    Abstract: Methods and systems provide for coordinated control between multiple devices of playback of a media track or playlist. The multiple devices may form an ad-hoc network for sharing control of media. A control device may coordinate control of the playlist and facilitate playback of the media at a playback device. Then when the control device leaves the group, a second device in the group will seamlessly become the control device and control playback and playlist coordination. The playback device may also be the control device. The playback advice may be a network-enabled speaker. Where the playback device is separate from the control device, the playback device may maintain sufficient information to operate without a control device until a new control device is selected.

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