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    TOKEN PASSING TECHNIQUE FOR MEDIA PLAYBACK DEVICES
    12.
    发明申请
    TOKEN PASSING TECHNIQUE FOR MEDIA PLAYBACK DEVICES 审中-公开

    公开(公告)号：WO2008085917A3

    公开(公告)日：2008-07-17

    申请号：PCT/US2008/000160

    申请日：2008-01-03

    Applicant: APPLE INC. ,  BRODERSON, Rainer ,  ROBBIN, Jeffrey ,  FARRUGIA, Augustin, J. ,  SCHULTZ, Rod

    Inventor： BRODERSON, Rainer ,  ROBBIN, Jeffrey ,  FARRUGIA, Augustin, J. ,  SCHULTZ, Rod

    IPC: H04L9/00

    Abstract: A digital rights management (DRM) system for distribution of digital content such as audio or video uses a token passing scheme to enhance security of the content from unauthorized access and use, including access by unauthorized players. The token is requested from the central content or DRM server by a host device such as a user's computer, using security related information. The token is then passed to a media player associated with the host device, the token being encrypted using a key special to that particular player. Upon receipt of the token, the player transmits back to the server certain related security information confirming receipt of the token and in return receives keys for decryption of the associated digital content. In the absence of proper passing of the token, player access to the content, or further access to other content, is denied. This also allows the player to communicate directly with the server for obtaining the keys.

    TECHNIQUES AND SYSTEMS FOR SUPPORTING PODCASTING
    14.
    发明公开
    TECHNIQUES AND SYSTEMS FOR SUPPORTING PODCASTING 审中-公开
    TECHNIKEN UND SYSTEME ZURUNTERSTÜTZUNGVON PODCASTS

    公开(公告)号：EP1889184A2

    公开(公告)日：2008-02-20

    申请号：EP06759421.8

    申请日：2006-05-08

    Applicant: Apple Inc.

    Inventor： JONES, Anne ,  ROBBIN, Jeffrey ,  WIESE, Mike ,  DAVIS, Stephen ,  DOWDY, Thomas

    IPC: G06F17/30

    CPC classification number: H04L67/104 ,  G06F3/048 ,  G06F17/30899 ,  H04L51/046 ,  H04L65/4084 ,  H04L65/60 ,  H04L67/06 ,  H04L67/10 ,  H04L67/26

    Abstract: Improved podcasts and techniques that facilitate their use are disclosed. The improved techniques can pertain to creating, publishing, hosting, accessing, subscribing, managing, transferring, and/or playing podcasts. According to one aspect, a client application can subscribe to podcasts and then automatically monitor the podcasts for updates to be downloaded. In the event that user interest in a podcast becomes inadequate, downloading of further updates can be restricted. According to another aspect, a podcast can be subscribed to through use of a portable subscription file. According to still another aspect, podcast feeds can be enhanced to include segment elements and other metadata.

    Abstract translation: 披露了改进的播客和便于使用的技术。 改进的技术可以涉及创建，发布，托管，访问，订阅，管理，传输和/或播放播客。 根据一个方面，客户端应用程序可以订阅播客，然后自动监视播客以进行要下载的更新。 如果用户对播客的兴趣不足，可以限制进一步更新的下载。 根据另一方面，可以通过使用便携式订阅文件订阅播客。 根据另一方面，可以增强播客馈送以包括段元素和其他元数据。

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