H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 21/431 (2011.01) H04N 5/445 (2011.01)
Patent
CA 2736070
A digital broadcast receiver includes a demultiplexer for demultiplexing a received broadcast signal into video streams and supplementary information streams where the supplementary information streams include a Program map table and an Event information table. The receiver includes a controller for detecting caption information from one or both of the PMT and EIT and to determine whether the caption data in the video streams is analog or digital. The controller also identifies a caption service number corresponding the caption data when the detected caption information indicates that the caption data is digital. The controller outputs a control signal according to the detected caption information. The receiver includes a video decoder for decoding video data from the video streams, a caption decoder for decoding the caption data according to the control signal and a video combiner configured to combine the decoded video data from the decoder with the decoded caption data.
Lg Electronics Inc.
Smart & Biggar
LandOfFree
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