Advanced Content
Advanced Content is a specification defined by the DVD forum used for authoring the interactive features, such as menus, bookmarks, picture-in-picture, and additional content and games for HD DVD. The Advanced Content runtime provides services for timing, user input (e.g., from remote control), and time based triggers for execution of code. It also enables network access to download additional content and access to persistent storage which is used for storing bookmarks and other state information. Advanced Content is written using an XML-based markup language, reminiscent of HTML, and application logic is written using ECMAScript. The functionality offered by the Advanced Content runtime is exposed by ECMAScript APIs. It also uses XML markup based upon XSL-FO for styling the UI and SMIL for time-triggered content. XPath can also be used while writing Advanced Content applications.
Read more about this topic: HDi (interactivity)
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