Patent ID: 9712855
Date: 2017-07-18
CPC Classifications: H04N

Claim:
1. A method for transmitting additional information by a first device in a broadcast communication system, the method comprising: receiving, by the first device, broadcast information on a broadcast channel; extracting, by the first device, an application information table (AIT) to acquire the additional information from the broadcast information; identifying, by the first device, whether the AIT includes the additional information; acquiring, by the first device, location information for the additional information and screen type information from the AIT, if the AIT does not include the additional information; and transmitting, by the first device, the location information for the additional information to a second device based on the screen type information, wherein the additional information is related to content included in the broadcast information, and wherein the screen type information indicates at least one of the first device and the second device that is allowed to display the additional information.