| 摘要 |
<p>The present invention relates to a network unit adapted to transmit a video channel (Chx) to be played at a nominal motion speed (a), which network unit comprising:
- a signaling means (104) adapted to receive a request (Join_Chx) from a decoding device (200) whereby transmission of the video channel is requested,
- a video transmitting means (112) adapted thereupon to transmit the video channel towards the decoding device, initially as a dedicated multimedia stream (uC_Chx) dedicatedly supplied to the decoding device and comprising an independent video frame (I) as first transmitted video frame, and further in time as a common multimedia stream (MC_Chx) commonly supplied to a plurality of decoding devices (200, 220). A network unit according to the invention is characterized in that the video transmitting means is further adapted to transmit the video channel within the dedicated multimedia stream ahead of time with respect to transmission of the video channel within the common multimedia stream, and in that the video channel is to be initially played at an averagely slower motion speed (², ²', ²", ²"'), thereby allowing transmission of the video channel to be resumed with the common multimedia stream. The present invention also relates to a decoding device, to a method for transmitting a video channel, and to a method for receiving and playing that video video channel.</p> |
