Patent ID: 7773633

Claim:
An apparatus for processing a bitstream of an embedded codec, wherein the bitstream is received in units of packets, the apparatus comprising: a packet reception unit receiving the bitstream of the embedded codec, wherein the embedded codec comprises a plurality of layers, and the bitstream is received in units of packets including the layers; a layer information unit identifying layer information from received packets; a bitstream determination unit assembling bitstreams of the received packets based on the identified layer information and forming the bitstream as initially transmitted; a bitstream generation unit wherein, if the packet reception unit has not received a packet including a layer, the bitstream generation unit assembles received packets of layers lower than the layer corresponding to the unreceived packet based on the identified layer information and generates a new bitstream; and a decoder decoding (i) the bitstream formed by the bitstream determination unit or (ii) the new bitstream generated by the bitstream generation unit; wherein the layer information unit identifies the layer information by receiving the layer information of the packets according to paths through which the packets are received.