Efficient output-request packet switch and method
CA 2247447 C · Owner: Motorola Mobility, Inc. · Inventors: Holt, Craig Sheppard; Ramakrishnan, Krishnan; Kline, Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method (1200, 1500, 1600, 1700, 1800) and packet switch (500 600, 700, 1400, 1900, 2000) for efficient switching of a plurality of received packets from a plurality of ingress ports to a plurality of egress ports using the , steps of: A) storing the packets in memory; B) sending arrival information for each packet to a destination egress port for the packet; C) storing in memory , at each destination egress port the arrival information; D) requesting by , each destination egress port, the packets from the packet memory in accordance with a predetermined scheme; and E) sending by the packet memory, to the , destination egress ports the packets requested.
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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 13, 1997 and granted October 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 13, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 13, 2019.
- 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.