H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 21/434 (2011.01) H04H 40/18 (2009.01)
Patent
CA 2736037
A digital broadcast receiver includes a demultiplexer for demultiplexing a received broadcast 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 video parser separates the video streams into user data and video data. A controller detects caption information from one or both of the PMT and the EIT and determines whether caption data in the user data is analog or digital using the detected caption information, and outputs a control signal according to the caption information. A video decoder decodes the video data and a caption decoder decodes the caption data according to the control signal. A video combiner combines the decoded video data with the decoded caption data. The caption information indicates whether a digital television closed caption service or a line 21 closed caption service is present in the video streams.
Lg Electronics Inc.
Smart & Biggar
LandOfFree
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