Optical recording medium, information processing device using the recording medium, and data recording method
CA 2489948 C · Owner: Kobayashi, Shoei · Inventors: Kobayashi, Shoei; Senshu, Susumu; Tachino, Ryuya
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a data recordable optical disc (2) wherein buffer areas for random access (Data Run-in DRi Data Run-out DRo) for , random access are respectively disposed before and after respective blocks (BLK, BLK1, BLK2), whereby when recording of new block is started the block is , recorded in the state where respective buffer areas overlap with each other with , respect to new block and existing block so that no gap takes place. Signal patterns , for Phase Locked Loop (PLL) at the time of data reproduction Auto Gain , Control , (AGC), and automatic adjustment of light source power synchronization , pattern, and/or signal patterns used for generation of …
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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 June 24, 2003 and granted August 27, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 24, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 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.