Interfacing device for computer game system
CA 2096674 A1 · Owner: Darling, Richard · Inventors: Darling, Richard; Carron, Edward A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An interfacing device for connecting the processing unit of a computer game system to an external data storage medium, has an address comparison unit for comparing addresses from the processing unit with a reference address Aref and causes replacement data Drep to be substituted for data in the addressed storage location of the external data storage medium whenever the compared addresses are the same. Control circuitry is used to monitor addresses from the processing unit to detect for self-checking activity and inhibits the substitution of data if self-checking activity is detected. Data from the external data storage medium may be compared with reference data, and data replacement may be …
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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 May 20, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 20, 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.