首页> 外文会议>Broadband Multimedia Systems and Broadcasting, 2009. BMSB '09 >Frame-accuracy synchronisation for mobile TV interactivity
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Frame-accuracy synchronisation for mobile TV interactivity

机译:移动电视交互的帧精度同步

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Interactive applications for mobile TV are usually related to the audiovisual content, but not very precisely. In some applications, like object-based interactivity, where the user can retrieve rich media information associated to moving objects with just the direct interactivity by the touch screen of the mobile device, frame-based precision is required. As DVB-H transmits audiovisual content in MPEG-4 formats, the natural choice for adding rich content seems to be LASeR (MPEG-4 part 20) scene description. In this paper we present a mechanism to achieve frame-accuracy synchronisation between audio, video and LASeR streams. We also introduce its inclusion to an end-to-end system that implements the whole chain of creation, transmission and reception of interactive applications for mobile devices.
机译:移动电视的交互式应用程序通常与视听内容有关,但并不十分精确。在一些应用中,例如基于对象的交互,其中用户可以通过移动设备的触摸屏以直接交互的方式检索与移动对象相关的富媒体信息,因此需要基于帧的精度。由于DVB-H以MPEG-4格式传输视听内容,因此添加丰富内容的自然选择似乎是LASeR(MPEG-4第20部分)场景描述。在本文中,我们提出了一种在音频,视频和LASeR流之间实现帧精度同步的机制。我们还将其包含在端到端系统中,该系统实现了移动设备交互式应用程序的创建,传输和接收的整个链。

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