Method and apparatus for sharing a time quantum
CA 2252238 A1 · Owner: Yue, Kelvin K. · Inventors: Stein, Daniel A.; Yue, Kelvin K.; Sebree, Michael A.
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 allowing a first thread to "share" its remaining time quantum with a second thread when the first thread is blocked. A thread may be blocked, for example if it is waiting for a resource, such as a data file or a lock. A thread may also be blocked if it is waiting foran event such as a user keystroke. If there is a thread on the run queue that "owns" the resource needed by the consumer thread the blocked consumer, thread transfers its right to execute for a remaining time quantum to the owner thread, and the owner thread executes next. If the threads are in a same process, this transfer means that no process context switch is required since, the consumer thread and …
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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
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.