Method and apparatus for processor sharing
CA 2252106 A1 · Owner: Yue, Kelvin K. · Inventors: Yue, Kelvin K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and apparatus for implementing proportional sharing in a single processor system and/or in a multi-processor system. The invention can also implement proportional sharing in a system that executes multi-threaded computer programs. The invention uses the metaphor of "tickets." Each process in the system has a number of tickets and each ticket entitles the process to use a processor for a period of a time quantum. The operating system allocates the processor(s) first to the process with the highest number of tickets. As each process (or thread) finishes being executed for a predetermined amount of time the tickets of that process/thread are adjusted accordingly and a new process (or …
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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 October 28, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 28, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 28, 2020.
- 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
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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.