Method and apparatus for recording and/or reproducing to and from disk
CA 1306804 C · Owner: Sony Corporation · Inventors: Ando, Ryo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disk recording and/or reproducing apparatus for a recordable disk previously provided with absolute addresses such as the recordable and reproducible compact disk wherein, a program area and a lead-in area are provided to the disk the data such as the performance information is recorded in the program area, the archival information showing the record contents of the program area is recorded in the lead-in area and the program area is reproduced on the biasis of the archival information in the program area. According to the present invention, the archival information is reproduced from the lead-in area, the sequence contained in the information is changed, and the information which has …
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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
- Granted August 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 25, 2009.
- 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.