| 摘要 |
A transcoding node (130,130') for multiple description transcoding is described, comprising: an optimizing unit (142, 142') operative to determine transcoding parameters (145) for a first description (133,133') and a second description (135, 135') of a datablock (112) based on transmission path characteristics (N Ai ,P Ai ) of a first transmission path (132) and on transmission path characteristics (N Bi ,P Bi ) of a second transmission path (134), wherein said first description is to be transmitted using a first transmission protocol and said second description is to be transmitted using a second transmission protocol, wherein said first and said second communication protocol are different wherein said optimizing unit (142) is further operative to determine said transcoding parameters based on an expected distortion when transmitted via said first and said second communication protocol; a packet generating unit (140,140') operative to generate a first sequence of packets for said first description and a second sequence of packets for said second description in response to said transcoding parameters (145); a first transmitting unit (146) operative to transmit said first sequence of packets according to said first communication protocol; and a second transmitting unit operative to transmit said second sequence of packets according to said second communication protocol. |
