Multiprocessor system
CA 2011503 C · Owner: Matsumoto, Takashi · Inventors: Nakada, Takeo; Fukuda, Munehiro; Matsumoto, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A number of synchronization controllers are provided for a multiprocessor system, one controller being provided for each processor and all being commonly connected to a synchronization signal bus. Each of these synchronization controllers has a synchronization wait signal transmitting means for receiving a synchronization request signal from a corresponding processor and transmitting a synchronization wait signal to the synchronization signal bus. Each controller also includes: (a) a synchronization register for specifying the other processors to be synchronized with the corresponding processor; (b) a comparator means for comparing the signal from the synchronization signal bus with the …
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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 March 5, 1990 and granted March 15, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2012.
- 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.