Digital broadcast receiver and method for processing caption thereof
CA 2736071 C · Owner: Lg Electronics Inc. · Inventors: Park, Tae Jin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A digital broadcast receiver includes a demultiplexer for demultiplexing a digital television (DTV) stream to a video stream and a supplementary steam where the supplementary stream includes an Event information table (EIT) describing an event which has one or more closed captioning services. The receiver includes a controller for decoding a caption service descriptor providing closed captioning information and which is in the EIT the descriptor comprising information that indicates whether a digital television closed caption service or a line 21 closed caption service is present in the video stream. The receiver further includes a video parser for parsing the video stream and outputting …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed September 16, 2004 and granted July 8, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 16, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2026.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.