System clock switching mechanism for microprocessor
CA 2060853 A1 · Owner: Nec Corporation · Inventors: Ide, Motoki; Kai, Toshiharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This system clock switching mechanism for a microprocessor has system clock specification data for the tasks in holding means such as a task control block (TDB). If there is no task in READY or RUN status the, clock switching control unit switches the system clock to the low speed clock. When the task is put in RUN status, the system clock specification data for that task in TDB is referred to so that the system clock is switched to the clock as specified.
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 February 7, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 7, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 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.