Information processing apparatus with security checking function
CA 2187038 C · Owner: Sega Corporation · Inventors: Kageyama, Yukitoshi; Nagashima, Takeshi; Owaki, Hidetaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Programs to be executed in an information processor and output data to be displayed are stored in an external storage device and the information processor has a security check function for more reliably checking the authentication of the programs to be executed. The information processor having a CPU for executing and controlling the programs, is connected to the external storage device and a display for displaying the output data. The output data stored in the external storage device is displayed on the display under the control of the program during its execution. The output data and reference comparison data stored in the information processor are compared with each other and when they …
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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 February 7, 1996 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2018.
- 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.