Topology-independent priority arbitration for stackable frame switches
CA 2277422 C · Owner: Pmc-Sierra Inc. · Inventors: Alexander, Thomas; Smith, Matt
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 allocating master priority to a unique one of a plurality of interconnected processors. A data storage register is provided for each processor. The registers and processors are interconnected to enable any processor to store data in all of the registers and to enable each processor to read data stored in that processor's register. A unique multiple bit identifier is allocated to each processor. The processors are synchronized with one another and master priority is arbitratively allocated to the processor having the lowest value identifier. The arbitration involves repetitively for each processor which, has not previously been dismissed as a "master" candidate: ~ …
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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 July 9, 1999 and granted July 8, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 9, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 2021.
- 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.