Messaging protocol for interactive delivery system
    4.
    发明授权
    Messaging protocol for interactive delivery system 有权
    交互式传送系统的消息传递协议

    公开(公告)号:US07146628B1

    公开(公告)日:2006-12-05

    申请号:US09708809

    申请日:2000-11-08

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

    摘要: Efficient messaging techniques that facilitate interactive program guide (IPG) delivery and allow a terminal to specifically designate requested items of information from a server. The IPG can be provided via a number of IPG pages, with each page including a number of defined regions. In one method, selection for a particular region of a particular page is received at a terminal and a determination is made whether the selected region is currently received. If the answer is no, a request for the selected region is generated and sent to a server. The request can conform to a particular message format that includes a number of fields, e.g., a region ID field that identifies the selected region, a subtype field that identifies a particular type, a time slot field that identifies a specific time slot, and a page offset field that identifies a specific page from among many.

    摘要翻译: 促进交互式节目指南(IPG)传送并允许终端从服务器专门指定所请求的信息项的有效消息传递技术。 IPG可以通过许多IPG页面提供,每个页面包括多个定义的区域。 在一种方法中,在终端处接收特定页面的特定区域的选择,并且确定当前是否接收到所选择的区域。 如果答案为否,则生成对所选区域的请求并将其发送到服务器。 该请求可以符合包括多个字段的特定消息格式,例如,标识所选择的区域的区域ID字段,标识特定类型的子类型字段,标识特定时隙的时隙字段,以及 页面偏移字段,用于标识特定页面。

    Efficient encoding algorithms for delivery of server-centric interactive program guide
    5.
    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:US06704359B1

    公开(公告)日:2004-03-09

    申请号:US09602547

    申请日:2000-06-21

    IPC分类号: H04B166

    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。

    Efficient delivery of interactive program guide using demand-cast
    9.
    发明授权
    Efficient delivery of interactive program guide using demand-cast 有权
    使用需求转换的交互式节目指南的有效传递

    公开(公告)号:US07519982B1

    公开(公告)日:2009-04-14

    申请号:US09687662

    申请日:2000-10-12

    IPC分类号: G06F3/00 H04N5/445

    摘要: Techniques to efficiently deliver interactive program guide (IPG). In one aspect, if an IPG page is requested by a viewer and not already transmitted, only the guide portion for the requested page is sent instead of the entire page. The requested page includes a guide portion that is specific to the requested page and a background portion that is common for a number of pages. The background portion can be continually broadcasted by the head-end. The requesting terminal is thus able to regenerate the requested page based on the demand-casted guide portion (i.e., transmitted upon request) and the continually broadcasted background portion. Alternatively, the entire requested page can be transmitted. In another aspect, instead of sending the requested guide portion continually, the guide portion is sent a limited number of times (e.g., only once, upon receiving the request). Since the guide portion for any particular page is normally static and does not change over time, sending the guide portion a limited number of times (e.g., once) is typically sufficient and greatly reduces bandwidth usage.

    摘要翻译: 有效提供交互式节目指南(IPG)的技术。 一方面,如果IPG页面被观看者请求并且尚未被发送,则仅发送所请求的页面的引导部分而不是整个页面。 所请求的页面包括特定于请求的页面的引导部分和对于多个页面是共同的背景部分。 背景部分可以由头端连续广播。 因此,请求终端能够基于请求转移的引导部分(即,根据请求发送)和连续广播的背景部分来再生所请求的页面。 或者,可以发送整个请求的页面。 在另一方面,代替连续地发送所请求的引导部分,引导部分被发送有限次数(例如,在接收到请求时仅发送一次)。 由于任何特定页面的引导部分通常是静态的并且不随时间改变,所以发送引导部分有限次数(例如,一次)通常是足够的并且大大减少带宽使用。

    Method and apparatus for keeping track of program indexes in an interactive delivery system
    10.
    发明授权
    Method and apparatus for keeping track of program indexes in an interactive delivery system 有权
    在交互式传送系统中跟踪节目索引的方法和装置

    公开(公告)号:US07490343B1

    公开(公告)日:2009-02-10

    申请号:US09709030

    申请日:2000-11-08

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

    摘要: Indexing techniques to maintain track of IPG pages and allow a terminal to determine whether a selected IPG is currently received and available, which regions are to be assembled together to generate the selected page, and which packet identifiers (PIDs) are to be processed to recover the needed regions. In one method, a “roster” is formed which includes a number of record elements, with each record element being associated with and identifying a respective IPG page received at a terminal. Each record includes a page ID field that specifically identifies the associated IPG page. A number of fields may be included in each record element such as fields for a guide PID, a video PID, a data PID, and so on. The roster is updated to reflect changes in IPG pages received at the terminal.

    摘要翻译: 索引技术来维护IPG页面的跟踪,并允许终端确定当前是否接收到所选择的IPG并且可用,哪些区域将被组合在一起以生成所选择的页面,并且哪些分组标识符(PID)将被处理以恢复 所需区域。 在一种方法中,形成包括多个记录元素的“名单”,其中每个记录元素与在终端处接收到的相应的IPG页面相关联并识别相应的IPG页面。 每个记录包括专门识别相关联的IPG页面的页面ID字段。 每个记录元素中可以包括多个字段,例如用于指导PID,视频PID,数据PID等的字段。 更新名单以反映终端收到的IPG页面的更改。