Receiver for digital broadcast, Digital broadcast system, and method for abstracting RRT data

摘要

A digital broadcast receiver, a digital broadcast system, and a method for extracting RRT(Rating Region Table) data of the digital broadcast receiver are provided to add RRT data to program data which is difficult to be changed among digital image signals, thereby preventing RRT data from being changed in a relay station, a middle broadcast station, and a regional broadcast station. A receiver(210) receives program data having video data, audio data, and caption data and a digital broadcast signal having PSIP(Program and System Information Protocol) data from a broadcast station. An RRT data update unit(220) extracts and updates RRT data added to the program data among the received digital broadcast signals. The RRT data update unit extracts RRT data from program data.