Patent ID: 7714933

Claim:
A digital broadcasting receiver comprising: a demultiplexer configured to demultiplex a received broadcasting signal into video streams and supplementary information streams, the supplementary information streams including a program map table (PMT) and an event information table (EIT); a controller configured to detect caption information from at least the PMT or the EIT, determine whether caption data in the video streams are analog or digital, identify a caption service number corresponding to the caption data when the detected caption information indicates that the caption data in the video streams are digital, and output a control signal according to the detected caption information; a video decoder configured to decode video data from the video streams; a caption decoder configured to decode the caption data according to the control signal; and a video combiner configured to combine the decoded video data from the video decoder with the decoded caption data, wherein the caption information indicates whether a digital television closed caption service is present in the video streams or a line 21 closed caption service is present in the video streams in accordance with electronic industry association (EIA) 708.