INTERACTIVE AUDIO/VIDEO BROADCAST SYSTEM, METHOD FOR OPERATING THE SAME AND USER DEVICE FOR OPERATION IN THE INTERACTIVE AUDIO/VIDEO BROADCAST SYSTEM

摘要

An audio/video (AV) broadcast system 2, a method for operating the same and a user device for operation in the interactive AV broadcast system. The AV broadcast system comprises an AV capture unit 4, an editing unit 12 and a user device 18. A plurality of video streams is captured by the AV capture unit 4, a main AV signal A is broadcast via a broadcast channel to the plurality of user devices 18. A user request R is transmitted from the user device 18 to the AV editing unit 12 and is indicative to information about a topic for an edited replay clip C. After processing of AV content at the AV editing unit 12 so as to generate the edited replay clip C in response to the user request R, said reply clip C is broadcast using free bandwidth of the broadcast channel. A copy of the replay clip C is cached at the user device 18 and reproduced upon reception of a user command.