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    TRIGGERING ENHANCED CONTENT
    4.
    发明公开
    TRIGGERING ENHANCED CONTENT 审中-公开
    发布扩展内容的

    公开(公告)号：EP1766983A1

    公开(公告)日：2007-03-28

    申请号：EP05750819.4

    申请日：2005-05-20

    申请人： chellomedia Programming B.V.

    发明人： VAN DER HEIJDEN, Wilhelm Adriaan Carolus

    IPC分类号： H04N7/24

    CPC分类号： H04N21/435 ,  H04N21/235 ,  H04N21/4758 ,  H04N21/488 ,  H04N21/8543 ,  H04N21/858

    摘要： A receiver for an enhanced television system in which video data defining a video stream, enhanced content data defining items of enhanced content, and trigger messages for triggering the play-out of the enhanced content are transmitted to receivers over a data network, the receiver comprising an enhanced content decoder for receiving and playing out enhanced content, and the enhanced content decoder comprising: a cache for caching enhanced content data received from the network; and a play-out controller for controlling the play-out of enhanced content, the play-out controller being arranged to receive trigger messages over the network and on receiving a trigger message that indicates an item of enhanced content for which enhanced content data is stored in the cache and that is to be played out, to play out that item of enhanced content data at a time indicated by the trigger message, and on receiving a trigger message that includes a definition of enhanced content, to play out the enhanced content defined in the trigger message at a time indicated by the trigger message.

    DISPLAY OF ENHANCED CONTENT
    5.
    发明公开
    DISPLAY OF ENHANCED CONTENT 审中-公开
    显示增强的内容

    公开(公告)号：EP1766972A2

    公开(公告)日：2007-03-28

    申请号：EP05751634.6

    申请日：2005-05-17

    申请人： chellomedia Programming B.V.

    发明人： AUWENS, Johannes, Cornelis, Leonardus

    IPC分类号： H04N7/16 ,  H04N7/24

    CPC分类号： H04N7/163 ,  H04N21/235 ,  H04N21/431 ,  H04N21/435 ,  H04N21/44008 ,  H04N21/44209 ,  H04N21/4542 ,  H04N21/4722 ,  H04N21/858

    摘要： A television broadcasting system is described in which a transmission unit controls the presentation of items of enhanced content during a running program. The presentation of the items of enhanced content is triggered in response to receipt by the transmission unit of periodic indications embedded in the running program. For each periodic indication, a criterion indicative of the quality of that periodic indication is measured and stored by the transmission unit as quality data. During the running program, if no indication is received by the transmission unit for a predetermined time, the transmission unit accesses the quality data to determine an expected indication quality. If the expected indication quality is above a threshold quality level, the triggering of enhanced content is suspended. On the other hand, if the expected indication quality is below the threshold, the presentation of enhanced content continues to be triggered.

    摘要翻译： 一种在电视广播系统中的方法，其中传输单元控制在运行程序期间增强内容的项目的呈现，并且响应于传输单元接收到嵌入在运行中的周期性指示，增强内容的项目的呈现被触发 该方法包括：针对每个周期性指示测量指示该周期性指示的质量的标准; 将测量的标准存储为质量数据; 并且在运行程序期间，如果发送单元未接收到指示达预定时间，则访问质量数据以确定期望的指示质量，并且：如果期望的指示质量高于阈值质量水平，则暂停触发 增强内容，并且如果预期指示质量低于阈值，则触发增强内容的呈现。

    DISPLAY OF ENHANCED CONTENT
    6.
    发明公开
    DISPLAY OF ENHANCED CONTENT 审中-公开
    显示扩展内容的

    公开(公告)号：EP1749402A2

    公开(公告)日：2007-02-07

    申请号：EP05742803.9

    申请日：2005-05-20

    申请人： chellomedia Programming B.V.

    发明人： AUWENS, Johannes, Cornelis, Leonardus

    IPC分类号： H04N7/173

    CPC分类号： H04N21/6547 ,  H04N21/235 ,  H04N21/4307 ,  H04N21/4331 ,  H04N21/435 ,  H04N21/8126

    摘要： A decoder for use in an interactive television system in which items of enhanced content can be presented to users, the decoder: including a receiver for receiving enhanced content data, a signal including timing indications and a video stream; a memory for storing enhanced content data received by the receiver and a timing schedule indicating timings associated with the enhanced content data; a timer; playout means for presenting the video data to a user, and being responsive to the timer for presenting the enhanced content data stored in the memory to a user in accordance with the state of the timer and the timing schedule; and synchronising means for synchronising the timer in accordance with the received timing indications.