Information recording medium, recording/reproducing method, and recording/reproducing apparatus
CA 2614829 C · Owner: Ko, Jung-Wan · Inventors: Ko, Jung-Wan; Hwang, Sung-Hee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An information recording medium, a method of recording and/or reproducing data to/from the medium and a recording/reproducing apparatus using the medium the medium having a data area including a user data area to record user data and a spare area to record replacement blocks that replace defect blocks occurring in the user data area wherein defect list entries include status information of the defect blocks and the replacement blocks and the status information of the defect blocks in the user data area is changed and the status information of the replacement blocks in the spare area is changed in response to the spare area being newly allocated to re-initialize the medium.
Read the whole patent
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 April 18, 2005 and granted February 5, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 18, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.