Disk recording medium and reproducing method and apparatus thereof
CA 2120355 C · Owner: Park, Hong-Soon · Inventors: Park, Dong-Jin; Song, Kwang-Lyeol; Choi, Kwang-Sik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disk recording medium includes a lead-in area a program area and a lead-out, area. The program area includes: a first track on which a plurality of data signals each, of which has a different index from the others is loaded; a second track on which a, plurality of programs is loaded whereby the plurality of programs consists of the, sequential combination of the indices of at least one data signal among the plurality of, data signals and each program has a different index front the others; a third track on, which a data index table comprising the indices of the respective data signals and initial, address information is loaded; and a fourth track on which a program index table, …
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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 July 21, 1993 and granted December 18, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 21, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 21, 2015.
- 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.