Patent ID: 7933590

Claim:
A digital multimedia broadcasting (DMB) data apparatus for enhancing a DMB data receiving speed in a DMB reception terminal, which receives primary DMB data from a broadcasting station that broadcasts DMB data, creates secondary DMB data using at least one of the received primary DMB data, and provides a user with a DMB data service using at least one of the secondary DMB data, comprising: a secondary DMB data forming unit for receiving at least one primary DMB data and forming the secondary DMB data using the received primary DMB data; a primary DMB data requesting unit for creating a request message to appoint and request a predetermined primary DMB data when it is perceived that the predetermined primary DMB data have not been received or received with an error by the secondary DMB data forming unit, transmitting the request message through a predetermined request message channel, and requesting an establishment of a return channel for receiving the predetermined primary DMB data to the broadcasting station; and a return channel transmission/reception unit for receiving the primary DMB data from the broadcasting station through the return channel when the return channel is established based on the request message and transmitting the received primary DMB data to the secondary DMB data forming unit; wherein the return channel is formed through an additional transmission channel separate from the transmission channel for DMB broadcasting; wherein the DMB reception terminal checks if a return channel predetermined between the DMB reception terminal and the broadcasting station exists, transmits a return channel establishment request signal to the broadcasting station through the request message channel when there is no return channel predetermined between the DMB reception terminal and the broadcasting station, and establishes a return channel between the DMB reception terminal and the broadcasting station when a return channel establishment grant signal is received from the broadcasting station; and wherein the primary DMB data requesting unit uses a wireless TCP/IP network to contact the broadcasting station in order to establish the request message channel; wherein the secondary DMB data correspond to multimedia object transfer (MOT) object data including a dedicated transport ID, and the primary DMB data correspond to main service channel (MSC) data, which includes the transport ID of the MOT object data to be formed by using the primary DMB data and a segment number that is a serial number of the primary DMB data.