Data recording device and method, data reproduction device and method, information recording medium, program-containing medium, and program
CA 2449067 C · Owner: Hamada, Toshiya · Inventors: Kato, Motoki; Hamada, Toshiya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a data-recording apparatus, a data-recording method, a data reproducing apparatus, a data reproducing method, an information-recording medium, a program storage medium and a program that are usable as means for determining a reproduction position with a high degree of reliability for data recorded on the information-recording medium even after the data is edited. As a result of a process to edit an AV stream file, the DV data recording/reproducing apparatus splits a DVF-sequence into DVF-sequences#0 and DVF-sequences#1 each including successive frames. When data is deleted in sector units in the edit process pieces of data included in deleted …
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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 27, 2003 and granted July 24, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 27, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 2025.
- 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.