Digital broadcast receiver and method for processing caption thereof
CA 2736070 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 method for processing a digital broadcast signal is disclosed. The method includes demultiplexing a received broadcast signal into a video stream audio stream and a supplementary information stream which includes a Program map table and an Event information table. The method further includes determining whether caption data in the video stream is analog caption data or digital caption data by using the closed caption information outputting a control signal according to the closed caption information and decoding the caption data in the video stream according to the control signal. The Event information table includes a descriptor having a closed caption field representing the closed …
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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 January 13, 2015. 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
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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.