数字广播 - 机顶盒
我对机顶盒项目非常陌生。是否有任何材料可以研究其内部结构和工作原理。我不知道如何开始了解它。我一直在寻找中间件、DCCM 等的架构我需要知道这些组件如何相互交互。我需要知道如何通过按下 EPG 菜单中的特定事件来获取与服务相对应的事件。我需要知道表之间的交互。 EPG中如何设置提醒以及操作方法互动电视作品。
I'm very new to settop box project.Is there any materials available to study the basics of its internals and the working of it.I dont know how to start understand about it.I was looking for the architecture of middleware,DCCM and other components.I need to know how these components interact with each other.I need to know how by pressing a particular event in the EPG menu we could able to get the event corresponding to the service.I need to know the interaction between the tables.How to set the reminder in EPG and how the interactive TV works.
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这只是对你的问题的非常部分的回答。相反，我想说，这是在深入交互之前必须完成的第一项初步工作。
PSIP：计划特定信息上的教程展示了 ATSC（或 DVB）如何类似）以周期表的形式组织，包括一些指示EPG的表。通过阅读和处理这些表格，您将能够完成所需的工作。
本质上，EPG表包含有关节目及其各自时间的信息。实际的计时信息包含在TDT和TOT表中。这些表告诉机顶盒当前时间（挂钟上）。一旦相应的时间发生，根据 TDT/TOT，通知操作就可以触发。
下面是传输流结构的两个更重要的参考。
请阅读上述先决条件，然后完善您的问题。
This is only a very partial answer to your question. Rather i would say, this is the first preliminary work you must accomplish before getting deeper into interactivity.
The tutorial here on PSIP: Program specific information show how the ATSC (or DVB is similar) is organized in the form of periodic tables including some tables that indicate EPG. By reading and processing such tables you will be able to accomplish the desired work.
Essentially, EPG table contains the information about the program and its respective time. And the actual timing information is contained in the TDT and TOT table. These tables tells the STB's the current time (on wall clock). Once, the respective time occurs, as per the TDT/TOT, the notification action can fire.
Below here are two more important references to Transport stream structures.
Please read the above pre-requsite and then refine your question.