Carrying protected content using a control protocol for streaming and a transport protocol
    2.
    发明申请
    Carrying protected content using a control protocol for streaming and a transport protocol 有权
    使用用于流传输和传输协议的控制协议来承载受保护的内容

    公开(公告)号:US20070011344A1

    公开(公告)日:2007-01-11

    申请号:US11176058

    申请日:2005-07-07

    IPC分类号: G06F15/16

    摘要: Various embodiments utilize methods of protecting content, such as Digital Rights Management (DRM), to enable secure playback of content on machines and devices within a local network, such as a home media network. In at least some embodiments, messages and content are delivered using, respectively, a control protocol for streaming and a transport protocol. In at least some embodiments, the control protocol for streaming is Real Time Streaming Protocol (RTSP), and the transport protocol is Real Time Transport Protocol (RTP).

    摘要翻译: 各种实施例利用保护诸如数字版权管理(DRM)的内容的方法来实现本地网络(例如家庭媒体网络)内的机器和设备上的内容的安全回放。 在至少一些实施例中,消息和内容分别使用用于流传输和传输协议的控制协议来传送。 在至少一些实施例中,流控制协议是实时流协议(RTSP),传输协议是实时传输协议(RTP)。

    Delivering policy updates for protected content
    4.
    发明申请
    Delivering policy updates for protected content 有权
    为受保护的内容提供策略更新

    公开(公告)号:US20070014413A1

    公开(公告)日:2007-01-18

    申请号:US11179206

    申请日:2005-07-12

    IPC分类号: H04L9/00

    摘要: Various embodiments permit policy updates, such as DRM policy updates, to be delivered and updated for a given piece of protected content. In at least some embodiments, various protocols can be extended to permit policy updates to be represented and carried by the protocol. In one embodiment, Hypertext Transport Protocol or HTTP is utilized to carry the policy updates. In another embodiment, Real Time Streaming Protocol or RTSP is used to carry policy updates.

    摘要翻译: 各种实施例允许针对给定的受保护内容片段进行策略更新(如DRM策略更新)被传递和更新。 在至少一些实施例中,可以扩展各种协议以允许由协议来表示和携带策略更新。 在一个实施例中,使用超文本传输​​协议或HTTP来承载策略更新。 在另一实施例中,实时流协议或RTSP用于携带策略更新。

    Methods and systems for self-describing multicasting of multimedia presentations
    5.
    发明申请
    Methods and systems for self-describing multicasting of multimedia presentations 有权
    用于自我描述多媒体演示的组播的方法和系统

    公开(公告)号:US20050089035A1

    公开(公告)日:2005-04-28

    申请号:US10693430

    申请日:2003-10-24

    摘要: Multimedia presentations are multicast using an announcement channel that includes presentation description information along with multiple channels for multiple streams of multimedia data to accommodate clients of different multimedia resources. Clients can use the announcement channel to select channel(s) appropriate for their multimedia resources. The channels are created in a predetermined manner (e.g., preselected logical addresses, preselected ports of an IP address, etc.) so that clients can immediately join a channel without (or concurrently with) joining the announcement channel to reduce startup latency. An acceleration channel may be created that provides blocks of data containing a preselected number of previous units, which may be transmitted at at a bit rate that is “faster than real-time”. This feature allows clients with suitable resources to more quickly buffer sufficient data to begin presenting the multimedia data to users.

    摘要翻译: 多媒体演示是使用包括演示描述信息以及多个多媒体数据流的多个频道的通知信道来组播的,以适应不同多媒体资源的客户端。 客户可以使用通知通道选择适合其多媒体资源的频道。 以预定方式(例如,预先选择的逻辑地址,IP地址的预选端口等)创建信道,使得客户端可以在不(或同时)加入通告信道的情况下立即加入信道以减少启动等待时间。 可以创建加速度通道,其提供包含预选数量的先前单元的数据块,其可以以“比实时更快”的比特率发送。 该功能允许具有适当资源的客户端更快速地缓冲足够的数据,以开始向用户呈现多媒体数据。

    Startup methods and apparatuses for use in streaming content
    7.
    发明申请
    Startup methods and apparatuses for use in streaming content 有权
    用于流媒体内容的启动方法和装置

    公开(公告)号:US20050044166A1

    公开(公告)日:2005-02-24

    申请号:US10929191

    申请日:2004-08-30

    摘要: Methods and apparatuses are provided for use with a client and server device connected through a communication link. The client device sends a startup request to the server device. The startup request identifies a streamable media content that is to be provided to the client device, a communication link bandwidth associated with the communication link, and an amount of the desired streamable media content that is to be provided at a bitrate greater than the encoded bitrate but no greater than about the communication link bandwidth. The server device buffers at least the amount of the streamable media content, and transmits the amount of the buffered streamable media content at the higher bitrate. The server device locates a discrete rendering point in the amount of the buffered streamable media content and initiates transmission beginning with the discrete rendering point. After transmitting the amount of the buffered streamable media content, the server device transmits subsequent portions of the streamable media content to the client device at a bitrate about equal to the encoded bitrate. The client device buffers received streamable media content, and subsequently renders the buffered streamed media content.

    摘要翻译: 提供了与通过通信链路连接的客户端和服务器设备一起使用的方法和装置。 客户端设备向服务器设备发送启动请求。 启动请求标识要提供给客户端设备的流媒体内容,与通信链路相关联的通信链路带宽以及要以大于编码比特率的比特率提供的期望可流媒体内容的量 但不能大于关于通信链路带宽。 服务器设备至少缓冲可流媒体内容的数量,并以较高的比特速率发送缓冲的流媒体内容的数量。 服务器设备以可缓冲流媒体内容的量定位离散渲染点,并从离散渲染点开始发送传输。 在发送缓冲的流可流媒体内容的量之后,服务器设备以等于编码比特率的比特率将可流媒体内容的后续部分发送到客户端设备。 客户端设备缓冲接收到的可流式媒体内容,并且随后呈现缓冲的流媒体内容。

    System and method for embedding a streaming media format header within a session description message
    8.
    发明授权
    System and method for embedding a streaming media format header within a session description message 有权
    用于将会话描述消息中的流媒体格式头部嵌入的系统和方法

    公开(公告)号:US07451229B2

    公开(公告)日:2008-11-11

    申请号:US10178705

    申请日:2002-06-24

    IPC分类号: G06F15/16

    摘要: A system and method for embedding a streaming media format header within a session description message. The streaming media format header is encapsulated within a session description message as a header attribute. The streaming media format header describes complex relationships between available media streams. The session description message also includes a list of content description attributes storing metadata about the media streams. A media description field in the session description message stores a stream attribute identifying a media stream associated with the media description field.

    摘要翻译: 一种在会话描述消息内嵌入流媒体格式报头的系统和方法。 流媒体格式头被封装在会话描述消息中作为头属性。 流媒体格式头描述了可用媒体流之间的复杂关系。 会话描述消息还包括存储关于媒体流的元数据的内容描述属性的列表。 会话描述消息中的媒体描述字段存储标识与媒体描述字段相关联的媒体流的流属性。

    Protecting elementary stream content
    10.
    发明申请
    Protecting elementary stream content 审中-公开
    保护基本流内容

    公开(公告)号:US20060184790A1

    公开(公告)日:2006-08-17

    申请号:US11202828

    申请日:2005-08-12

    IPC分类号: H04L9/00

    摘要: Protecting elementary stream media content is described. In one aspect, Media Access Units (MAUs) of elementary stream content are identified. Each MAU includes one or more data segments representing a single video or audio frame. Encryption boundaries are selected for each MAU. The encryption boundaries are based on one or more data segments associated with the respective MAU. Portions of each MAU are encrypted based on corresponding encryption boundaries. Each MAU is mapped to a MAU Payload Format. The MAU Payload Format allows a media consumer to process each elementary stream associated with the elementary stream content independent of any different elementary stream. The MAU Payload Format also allows a media consumer to process each MAU in an elementary stream independent of any other MAU.

    摘要翻译: 描述保护基本流媒体内容。 在一个方面,识别基本流内容的媒体访问单元(MAU)。 每个MAU包括表示单个视频或音频帧的一个或多个数据段。 为每个MAU选择加密边界。 加密边界基于与各个MAU相关联的一个或多个数据段。 每个MAU的部分基于对应的加密边界进行加密。 每个MAU被映射到MAU有效载荷格式。 MAU有效载荷格式允许媒体消费者处理与基本流内容相关联的每个基本流,独立于任何不同的基本流。 MAU有效载荷格式还允许媒体消费者以独立于任何其他MAU的基本流来处理每个MAU。