relevant information does not exist in the dst section the vendor section shown in fig3 is downloaded here data information on a specific application is downloaded as a plurality data sections dsi control message dii control message ddb data message regardless of whether to receive the vendor section and experiences a data receiving process for a predetermined time in other words the data sections are downloaded and configured as a module and a file objects are extracted and provided to a specific application here in the predetermined time period the advertisement image included in the vendor section is extracted and broadcasted vendor_bytes of vendor section can include an advertisement image to be provided to a viewer while receiving data here since such vendor section cannot exceed 4 k bytes for a section it can be divided into a few vendor sections and transmitted according to size of an advertisement image file accordingly advertisement image files extracted from a plurality of vendor sections are combined to generate one advertisement image file and the advertisement image file is provided to a viewer before data files extracted from data sections are broadcasted so that a viewer can watch the corresponding advertisement image and does not feel bored during a waiting time before the data files are broadcasted here since the vendor section requires no additional control message it is not necessary to make an additional module then the corresponding advertisement image files can be extracted and provided to the viewer without being affected by receiving speed 0066 fig5 illustrates an embodiment in which a vendor section is provided in a data broadcast system according to the present invention as shown in fig5 a server e.