Patent ID: 7450514

Claim:
A multi media data transmission device, comprising: a mapping unit, which analyzes multi media traffic including a compressed media resource, traffic factors, and quality of service (QoS) factors and represents the multimedia traffic by layer factors used in a network layer; a media packet transmitter/receiver unit, wherein multi media data are transmitted in real time through a network according to the represented factors and the multi media data are MPEG data; a call control unit, which performs call set-up and call control with other MPEG media data transmission devices, receives QoS change requests from other MPEG media data transmission device users or receives the QoS change requests according to changes in a network environment, and transmits the received QoS change requests to the media packet transmitter/receiver through the mapping unit; and a MPEG media processing unit producing MPEG media traffic which is changed according to a control signal from the media packet transmitter/receiver, wherein the media packet transmitter/receiver unit receives the QoS change request from the call control unit and transmits a control signal to the MPEG media processing unit.