Patent ID: 7782779

Claim:
An apparatus for transmitting a multimedia data stream, the apparatus comprising: a data source unit which is configured to output the multimedia data stream; a frame dividing unit which is configured to divide the multimedia data stream into a plurality of groups of transport stream (TS) packets, included in the multimedia data stream and to output the divided multimedia data stream; a parameter control unit which is configured to select a parameter set of a plurality of parameter sets for each of the groups of the TS packets based on a priority of each group for separate transmission control of the groups of TS packets using a plurality of parameters of the selected parameter set for controlling a transmission layer; and a network interface unit which is configured to control transmission of the groups of TS packets separately using the selected parameter set, wherein the frame dividing unit determines the priority of each group of TS packets by classifying each group of TS packets into a highest priority class if at least one I frame is present in the group of TS packets, into a next-highest priority class if at least one P frame but no I frames are present in the group of TS packets, and into a lowest priority class if only B frames are present in the group of TS packets.