Cache disable for a data processor
CA 1233271 A · Owner: Motorola, Inc. · Inventors: Hartvigsen, Jay A.; Mothersole, David S.; Zolnowsky, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract A data processor is adapted for operation with a memory containing a plurality of items of operating information for the data processor. In addition a cache stores a selected number of all of the items of the operating information. When the cache provides an item of operating information the, memory is not requested to provide the item so that a user of the data processor cannot detect the request for the item. A disable circuit is provided to prevent the cache from providing the item when a signal external to the data processor is provided. Consequently, a user with the, external signal, can cause the data processor to make all of its requests for items of operating information to …
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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 February 23, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 2005.
- 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.