Method and apparatus for moving data packets between networks while minimizing cpu interventions using a multi-bus architecture
CA 2194026 C · Owner: Ibm Canada Limited-Ibm Canada Limitee · Inventors: Taglione, John V.; Kam, Patrick K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a data processing system comprising: a CPU; a system memory; a plurality of network interfaces; a CPU bus connected to the system memory and to each of the network interface for initialization and control of the network interfaces by the CPU; an individual DMA bus connected to each of corresponding network interfaces and to the system memory; each of the network interfaces is connectable to an external network whereby data can be transferred by the data processing system from one network to another using system memory.
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 December 24, 1996 and granted May 1, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2018.
- 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.