Patent ID: 8769570

Claim:
A method of processing an application in a digital broadcast receiver the method comprising: receiving, from a broadcast network, broadcast audio/video (A/V) content and application information table (AIT) data, wherein the AIT data includes a linkage descriptor; parsing the linkage descriptor, wherein the linkage descriptor comprises a field identifying a type of at least one secondary device able to process the application; displaying an indicator to indicate presence of at least one application usable in at least one of a plurality of secondary devices while displaying video data included in the broadcast A/V content, wherein the indicator is overlaid with the video data; searching a specific secondary device coupled to the digital broadcast receiver, wherein identification for the specific secondary device is registered in a memory of the digital broadcast receiver; extracting additional information on multiple applications; displaying an application list according to the extracted additional information, wherein the application list comprises at least one of time information for downloading the applications or price information; receiving a request signal for a specific application in the application list from the specific secondary device; and transmitting the requested application or an IP address of the requested application to the specific secondary device.