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    METHOD AND SYSTEM FOR EFFICIENT STREAMING VIDEO DYNAMIC RATE ADAPTATION
    5.
    发明申请
    METHOD AND SYSTEM FOR EFFICIENT STREAMING VIDEO DYNAMIC RATE ADAPTATION 审中-公开
    用于有效流动视频动态速率适应的方法和系统

    公开(公告)号：US20160080456A1

    公开(公告)日：2016-03-17

    申请号：US14859876

    申请日：2015-09-21

    申请人： Ericsson AB

    发明人： Kevin J. Ma ,  Tung Ng ,  Jianguo Xu ,  Raj Nair

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

    CPC分类号： H04L65/607 ,  G06Q30/0241 ,  H04L43/0876 ,  H04L43/0882 ,  H04L65/4069 ,  H04L65/608 ,  H04L65/80 ,  H04L67/02 ,  H04L67/32 ,  H04L69/16

    摘要： A streaming media system employs dynamic rate adaptation. The method includes a file format compatible with legacy HTTP infrastructure to deliver media over a persistent connection. The method further includes the ability for legacy client media players to dynamically change the encoded delivery rate of the media over a persistent connection. The method provided works transparently with standard HTTP servers, requiring no modification and leverages standard media players embedded in mobile devices for seamless media delivery over wireless networks with high bandwidth fluctuations. A system is also specified for implementing a client and server in accordance with the method.

    摘要翻译： 流媒体系统采用动态速率适配。 该方法包括与传统HTTP基础设施兼容的文件格式，以通过持久连接传递媒体。 该方法还包括传统客户端媒体播放器通过持久连接来动态地改变媒体的编码传送速率的能力。 所提供的方法与标准HTTP服务器透明地工作，不需要修改，并利用嵌入在移动设备中的标准媒体播放器，通过具有高带宽波动的无线网络进行无缝媒体传输。 还指定了根据该方法实现客户机和服务器的系统。

    System and method for securing content keys delivered in manifest files
    6.
    发明授权
    System and method for securing content keys delivered in manifest files 有权

    公开(公告)号：US11228427B2

    公开(公告)日：2022-01-18

    申请号：US14618598

    申请日：2015-02-10

    申请人： Ericsson AB

    发明人： Raj Nair ,  Kevin J. Ma ,  Mikhail Mikhailov

    IPC分类号： H04L9/08 ,  H04L9/14

    摘要： A method and a user device are disclosed for securing streaming content decryption. The method includes receiving at the user device a manifest for requested content, the manifest providing a Content Encryption Key (CEK) that is encrypted using a first public Key Encryption Key (KEK), a corresponding first private KEK being stored in secure storage on the user device; decrypting, inside a secure processing zone on the user device, the CEK using the first private KEK to create a decrypted content key; decrypting, inside the secure processing zone, requested content using the decrypted content key to form decrypted content; and providing the decrypted content to a decoder on the mobile user device.

    Server-side class-of-service-based bandwidth management in over-the-top video delivery
    10.
    发明授权
    Server-side class-of-service-based bandwidth management in over-the-top video delivery 有权
    基于服务器端的基于服务的基于类的服务级带宽管理

    公开(公告)号：US09203888B2

    公开(公告)日：2015-12-01

    申请号：US13873879

    申请日：2013-04-30

    申请人： Ericsson AB

    发明人： Kevin J. Ma

    IPC分类号： G06F15/16 ,  H04L29/06 ,  H04L29/08

    CPC分类号： H04L65/608 ,  H04L67/322 ,  H04L67/325 ,  H04L69/28

    摘要： A server device delivers content to a client device by sending the content as a series of segments using chunked delivery. The sending is paced in accordance with a class of service for the client device, the class of service having an associated target chunk send time that decreases with higher classes of service. Pacing includes sending a chunk over an actual chunk send time and calculating an inter-chunk delay as a difference between the target chunk send time and the actual chunk send time. If the inter-chunk delay is positive, then the server waits the inter-chunk delay before beginning to send a next successive chunk, and otherwise it immediately begins sending the next successive chunk. The server also employs bitrate selection to manage client use of available bandwidth.

    摘要翻译： 服务器设备通过使用分块传递将内容发送为一系列段来将内容传送到客户端设备。 发送按照客户端设备的一类服务进行节拍，具有相关联的目标块发送时间的服务等级随着较高等级的服务而减少。 起搏包括通过实际块发送时间发送块，并计算块间延迟作为目标块发送时间与实际块发送时间之间的差异。 如果块间延迟为正，则服务器在开始发送下一个连续块之前等待块间延迟，否则立即开始发送下一个连续的块。 服务器还采用比特率选择来管理客户端可用带宽的使用。