公开(公告)号：US20140317665A1

公开(公告)日：2014-10-23

申请号：US14321540

申请日：2014-07-01

Applicant: LG ELECTRONICS INC.

Inventor： Kyungho KIM ,  Gomer THOMAS ,  Seungjoo AN ,  Jinpil KIM ,  Sejin OH ,  Kyoungsoo MOON

IPC: H04N21/236 ,  H04N21/6547 ,  H04N21/858 ,  H04N7/088 ,  H04N21/488

CPC classification number: H04N21/8545 ,  H04N7/088 ,  H04N7/0882 ,  H04N21/235 ,  H04N21/2353 ,  H04N21/236 ,  H04N21/23614 ,  H04N21/238 ,  H04N21/25808 ,  H04N21/2665 ,  H04N21/4307 ,  H04N21/435 ,  H04N21/438 ,  H04N21/4622 ,  H04N21/47217 ,  H04N21/4884 ,  H04N21/4888 ,  H04N21/64322 ,  H04N21/6543 ,  H04N21/6547 ,  H04N21/8173 ,  H04N21/84 ,  H04N21/8547 ,  H04N21/858 ,  H04N21/8586

Abstract: A method of processing a broadcast signal including an interactive broadcast service at a transmitter is disclosed. The method comprises generating an parameter table containing metadata about applications and interactive broadcast events targeted to the applications, dividing the parameter table into a plurality of parameter blocks, inserting each of the parameter blocks into each of a plurality of parameter table sections, generating a trigger which is a signaling element to identify signaling and establish timing of playout of the interactive broadcast events, inserting the trigger into a closed caption channel of the broadcast signal, transmitting the broadcast signal including the closed caption channel and a specific channel carrying the plurality of parameter table sections, wherein the trigger includes location information specifying a location of the parameter table in the broadcast signal.