VIDEO HEAD-END
The present invention provides an improved video head-end. The video head-end is adapted to, upon receipt of a data stream including interactive data, identify the interactive data and extract the interactive data from the data stream. Once the interactive data has been extracted from the data stream it can be translated into a different language. The different language being one that an endpoint in a television network can process. Once the interactive data has been translated it can be transmitted, along with any other data that formed part of the data stream the television network.
1 . A device comprising:
(a) a receiver to receive a data stream from a network, the data stream including interactive data and other data;
(b) an extractor to identify and extract interactive data from the data stream
(c) a translator to convert the extracted interactive data from a first language to a second language; and
(d) at least one transmitter for sending the interactive data and other data across the network.
2 . A device as claimed in claim 1 wherein the device further includes a multiplexer to combine the interactive data in the second language and the other data before sending the interactive data and other data across the network.
3 . A device as claimed in claim 2 wherein the device further includes a buffer to store the other data before multiplexing the interactive data and the other data.
4 . A device as claimed in claim 2 wherein the device is further arranged to provide the interactive data and other data with an identifier enabling the interactive data to be displayed with the other data it was received with.
5 . A device as claimed in claim 2 wherein the identifier is timing information.
6 . A device as claimed in claim 1 wherein the device further includes a cache configured to store the extracted interactive data in the second language.
7 . A device as claimed in claim 6 wherein the device further includes a cache configured to store the extracted interactive data in the first language.
8 . A device as claimed in claim 6 wherein the device further includes a processor to identify the extracted interactive data, determine whether the interactive data in the second language is present in the cache, and if the interactive data is present in the second language provide the cached interactive data to the at least one transmitter.
9 . A device as claimed in claim 1 further including processing means to groom the data prior to transmitting it to the endpoint.
10 . A device as claimed in claim 1 wherein the interactive data is transmitted across the network in response to a request for interactive data received from another device in the network.
11 . A device as claimed in claim 6 wherein the device identifies the interactive data specified in the request, determines whether the interactive data in the second language is present in the cache, and, if the interactive data is present in the second language, provide the cached interactive data to the at least one transmitter.
12 . A device as claimed in claim 1 wherein the other data is one of the group comprising video data and audio data.
13 . A device as claimed in claim 1 wherein the other data encodes a television programme and the interactive data enables user interaction with the television programme.
14 . A device as claimed in claim 1 wherein the first language is any one of the group comprising MHEG-5, HTML, OpenTV, MHP and NDS.
15 . A device as claimed in claim 1 wherein the second language is any one of the group comprising MHEG-5, HTML, OpenTV, MHP and NDS.
16 . A device as claimed in claim 1 wherein the device is a video head-end.
17 . A method for supplying interactive data to an endpoint in a television network, the method comprising the steps of:
(a) receiving a data stream from a network, the data stream including interactive data and other data;
(b) identifying and extracting the interactive data from the data stream
(c) converting the extracted interactive data from a first language to a second language; and
(d) sending the interactive data and other data across the network.