Digital broadcast receiver and method for processing caption thereof
CA 2775955 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 transmitter for transmitting a digital broadcasting signal comprises a multiplexer for multiplexing audio data video data and control data to output a DTV , stream, and a transmitter for transmitting the DTV stream. The video data includes , user data bits carrying caption service data for providing a closed caption service. , The control data includes a caption service descriptor having a caption information , field indicating whether a digital television closed caption service is present in the , video data or a line 21 closed caption service is present in the video data in accordance with electronic industry association (EIA) 708 and a caption , service , number field …
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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 October 28, 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.