Cache memory system and method of operating the cache memory system
CA 2105085 A1 · Owner: Zitel Corporation · Inventors: Lautzenheiser, Marvin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data storage device (200) consists of solid state storage (208) and a rotating magnetic disk (210) attains a fast response time approaching that of a solid state device and improves response time of a normal magnetic disk. High performance is accomplished by hardware configuration (205) with procedures placing and maintaining data in the most appropriate media based on actual and projected activity. System management features a searchless method for determining the location of data within and between the two devices (208 and 210). Solid state memory (208) permits retention of useful, active data, and prefetching of data. Movement of updated data from the solid state storage (208) to the …
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 5, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2014.
- 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.