Digital data transmission method, digital data transmission device and digital data receiving device
CA 2253518 C · Owner: Matsushita Electric Industrial Co. Ltd. · Inventors: Ueno, Takafumi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
First digital obtained by encoding a low-resolution digital video signal at a low-resolution, compression encoder and second digital obtained by encoding a high resolution digital video, signal at a high-resolution compression encoder are multiplexed and transmitted with, information relating to programs wherein identification information for identifying both digital, data is described. At a receiving side the first and second digital data are identified on the basis, of the identification information and are reproduced by corresponding , decoders. Therefore when image of different resolutions is transmitted by multiplexing it is possible to reproduce data, correctly at the receiving …
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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 March 5, 1998 and granted October 8, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2020.
- 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.