EMBEDDING TV-ANYTIME DATA IN CONTENT

摘要

A first content item is steganographically encoded with a TV-Anytime (TVA) Content Reference Identifier (CRID). Metadata can also be encoded. A steganographic decoder (16) extracts the embedded CRID from the first content item. The extracted CRID can be used to request metadata corresponding to the CRID or to request the CRID is resolved to a locator of content corresponding to the CRID. The content item can form part of a web page and the decoder (16) can form part of a plug-in (14) to a browser (12). The CRID can reference a second content item or the CRID can provide an association to different versions or formats of the first content item. This enables tunnelling of TVA data through existing channels.