Efficient encoding algorithms for delivery of server-centric interactive program guide
    21.
    发明授权
    Efficient encoding algorithms for delivery of server-centric interactive program guide 有权
    高效的编码算法,用于交付以服务器为中心的交互式节目指南

    公开(公告)号:US07433406B2

    公开(公告)日:2008-10-07

    申请号:US10697623

    申请日:2003-10-30

    IPC分类号: H04N7/12

    摘要: A data structure for representing program data that includes a number of streams. Each stream comprises a group of pictures (GOP) having a first picture and remaining pictures. The data structure includes a first set of one or more elements for representing data for the first pictures in the GOPs, and a second set of one or more elements for representing data for the remaining pictures in the GOPs. At least one element in the first set represents data for the first picture of at least one respective GOP, with each such first picture having been encoded as a reference I picture. Each remaining element (if any) in the first set represents data for the first picture of a respective remaining GOP, with each such remaining first picture having been encoded as either a difference picture or a P picture. Each element in the second set represents data for a particular remaining picture in one of the GOPs, with each such remaining picture having been encoded as either a P or B picture. Each stream is represented by one or more elements in the first set and one or more elements in the second set.

    摘要翻译: 一种用于表示包括多个流的程序数据的数据结构。 每个流包括具有第一图像和剩余图像的一组图像(GOP)。 数据结构包括用于表示GOP中的第一图像的数据的一个或多个元素的第一组,以及用于表示GOP中剩余图像的数据的一个或多个元素的第二组。 第一组中的至少一个元素表示至少一个相应GOP的第一图像的数据,其中每个这样的第一图像已被编码为参考I图像。 第一组中的每个剩余元素(如果有的话)表示相应剩余GOP的第一图像的数据,其中每个这样的剩余第一图像已被编码为差分图像或P图像。 第二组中的每个元素表示GOP中的一个中的特定剩余图像的数据,其中每个这样的剩余图像已经被编码为P图像或B图像。 每个流由第一组中的一个或多个元素和第二组中的一个或多个元素表示。

    Latency reduction in providing interactive program guide
    23.
    发明授权
    Latency reduction in providing interactive program guide 有权
    延迟减少提供交互式节目指南

    公开(公告)号:US06968567B1

    公开(公告)日:2005-11-22

    申请号:US09466987

    申请日:1999-12-10

    摘要: Techniques presented reduce latencies or delays in the delivery of an interactive program guide. In accordance with a first technique, a method for providing an interactive program guide comprises: providing a plurality of transport streams; providing a group of interactive guide pages within each said transport stream, where the group of interactive guide pages comprise related pages. In accordance with a second technique, a method for providing an interactive program guide comprises: forming a first transport stream including video packets with a first set of packet identifiers; and forming a second transport stream including video packets with a second set of packet identifiers, where the first set of packet identifiers and the second set of packet identifiers include a common packet identifier. In accordance with a third technique, a method for providing an interactive program guide comprises: providing an interactive guide page which may be navigated by a viewer; providing a threshold within the interactive guide page; and if the threshold is crossed during navigation of the page by the viewer, then requesting a next interactive guide page.

    摘要翻译: 提供的技术减少了交付节目指南的延迟或延迟。 根据第一技术,用于提供交互式节目指南的方法包括:提供多个传输流; 在每个所述传输流中提供一组互动指南页面,其中该组互动指南页面包括相关页面。 根据第二技术,提供交互式节目指南的方法包括:用第一组分组标识符形成包括视频分组的第一传输流; 以及形成包括具有第二组分组标识符的视频分组的第二传输流,其中所述第一组分组标识符和所述第二组分组标识符包括公共分组标识符。 根据第三技术,提供交互式节目指南的方法包括:提供可由观看者导航的交互式指南页面; 在交互指南页面内提供一个阈值; 并且如果观看者在页面的导航期间越过阈值,则请求下一个交互式指南页面。

    Picture-in-picture and multiple video streams using slice-based encoding
    25.
    发明授权
    Picture-in-picture and multiple video streams using slice-based encoding 有权
    使用基于片段编码的画中画和多视频流

    公开(公告)号:US06481012B1

    公开(公告)日:2002-11-12

    申请号:US09454216

    申请日:1999-12-09

    IPC分类号: H04N5445

    摘要: Methods for slice-based encoding of program guides and user interfaces. The program guides include multiple video streams for picture-in-picture and other applications. A method for encoding the program guide includes encoding a first set of slices for each of a plurality of graphics pages; and encoding a second set of slices for each of a plurality of video streams. The user interfaces are multi-functional and may be used for electronic commerce and other applications. A method of generating the user interface includes encoding a set of slices for each of a plurality of objects, each object being characterized by an identity, at least one attribute, and at least one operation. In one embodiment of this method, the plurality of objects include an electronic commerce object, where the electronic commerce object is attributed with a first hyper text markup language (HTML) page. A head-end centric system and apparatus for encoding and delivery of realtime content, including: a non-realtime content source for providing non-realtime content; a non-realtime encoder for encoding the non-realtime content into encoded non-realtime content; a realtime encoder source for providing realtime video and audio content; a realtime encoder for encoding the realtime video and audio content into encoded realtime video an audio; a remultiplexor for repacketizing the encoded non-realtime content and the encoded realtime video and audio into transport packets; and a re-timestamp unit coupled to the remultiplexor for providing timestamps to be applied to the transport packets in order to synchronize the realtime and non-realtime content therein.

    摘要翻译: 程序指南和用户界面的基于片段编码的方法。 节目指南包括用于画中画和其他应用的多个视频流。 用于对节目指南进行编码的方法包括编码多个图形页面中的每一个的第一组片段; 以及为多个视频流中的每一个编码第二组片段。 用户界面是多功能的,可用于电子商务和其他应用。 生成用户界面的方法包括对多个对象中的每个对象的一组片段进行编码,每个对象的特征在于身份,至少一个属性和至少一个操作。 在该方法的一个实施例中,多个对象包括电子商务对象,其中电子商务对象被归因于第一超文本标记语言(HTML)页面。 一种用于编码和传送实时内容的头端中心系统和装置,包括:用于提供非实时内容的非实时内容源; 非实时编码器,用于将非实时内容编码为编码的非实时内容; 用于提供实时视频和音频内容的实时编码器源; 实时编码器,用于将实时视频和音频内容编码成编码的实时视频音频; 再编码器,用于将编码的非实时内容和编码的实时视频和音频重新分组到传输分组中; 以及耦合到所述再多路复用器的重新时间戳单元,用于提供要应用于所述传输分组的时间戳,以便同步其中的实时和非实时内容。

    System and method for delivery of short-time duration video segments
    27.
    发明授权
    System and method for delivery of short-time duration video segments 有权
    提供短时间段视频段的系统和方法

    公开(公告)号:US08255956B2

    公开(公告)日:2012-08-28

    申请号:US11400691

    申请日:2006-04-07

    IPC分类号: G06F3/00 G06F13/00 H04N5/445

    摘要: A system and method for efficient delivery of video segments. One embodiment relates to the delivery of short-time duration video segments. The video segments may be delivered as part of a media-rich interactive program guide (IPG) or for some other application. The system and method provides a viewer with access to a video segment starting at its beginning (or any other selectable point within the video segment). Such access may be provided using a server-centric interactive technique. The server-centric technique may involve use of a demand-cast system and method. Demand-cast messaging may occur between a session manager, transport stream generator, and terminal. For example, a video object on a screen may be activated by a viewer using a remote control for a terminal. Activation of the object may cause transmission of a request from the terminal to a session manager for a video segment corresponding to the object. In response to the request, the session manager may initiate a process to accomplish delivery of the video segment from a transport stream generator to the terminal.

    摘要翻译: 一种用于高效传送视频片段的系统和方法。 一个实施例涉及短时间段视频片段的传送。 视频段可以作为媒体丰富的交互式节目指南(IPG)或其他一些应用的一部分来传送。 该系统和方法为观众提供从其开始(或视频片段中的任何其他可选点)开始的视频片段的访问。 可以使用以服务器为中心的交互技术来提供这种访问。 以服务器为中心的技术可能涉及使用需求转换系统和方法。 会话管理器,传输流发生器和终端之间可能发生请求转移消息。 例如,屏幕上的视频对象可以由观看者使用终端的遥控器激活。 对象的激活可能导致从终端向与对象相对应的视频片段的会话管理器发送请求。 响应于该请求,会话管理器可以启动完成从传输流发生器到终端的视频段的传递的过程。