| 摘要 |
A MediaDescription data structure that includes both descriptive metadata, such as EPG information, about a multimedia content item and instructions for acquiring the content item is assigned to each multimedia content item in a multimedia system. A MediaDescription data structure is transferable as a token for representing the content item. The acquisition information may also include information about presenting the content item in different view contexts, as well as information about relationships to other pieces of content, and information about how each different version of the content item is to be acquired and displayed. MediaDescription data structure tokens can be used to facilitate digital video recording (DVR) processes, Internet content rendering processes, multimedia search processes, search results aggregating processes , video-on-demand (VOD) processes, pay-per-view processes, and program guide rendering processes.
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