Disc selecting and controlling method
CA 2011817 C · Owner: Sony Corporation · Inventors: Nishio, Mamoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A disc selecting and controlling method for selectively controlling at least one automatic disc changer adapted to selectively take out plural disc-shaped recording media to record and/or reproduce the recording media on at least one disc drive, and at least one disc recording and/or reproducing apparatus adapted to record and/or reproduce at least one disc-shaped recording medium from a host computer, by means of a means of a disc controller is disclosed. The, disc drive device or the disc-shaped recording and/or reproducing device is switchingly selected by a hardware technique by a selection signal transmitted over a selection signal line of the disc controller, and the automatic disc …
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 March 9, 1990 and granted February 22, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 9, 2012.
- 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.