Pseudorandom number generating method and pseudorandom number generator
CA 2247910 A1 · Owner: Nec Corporation · Inventors: Shimada, Michio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A register 205 of each pseudorandom number generating circuit 101 takes in and holds a state data composed of a plurality of bits in synchronism with a clock pulse of a clock signal. Function generator circuits 2021 and 2022 output data each composed of a plurality of bits correspondingly to the state data held in the register 205. A selector 203 selects a specific bit of either one of the two data output from the function generator circuits on the basis of a pseudorandom number X i-l generated by a preceding one of the pseudorandom number generating circuits and outputs it as a pseudorandom number X i. On the other hand another selector 206 selects one of the data output from the function …
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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 September 23, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 23, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 23, 2020.
- 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.