Variable length register device
CA 2266259 A1 · Owner: Nec Corporation · Inventors: Shimura, Naoki; Uno, Kousuke; Ashihara, Koji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
It is an object of the invention to provide a variable length register device which can be used not only for assigning an address of a memory but also as a general register. A memory outputs an instruction to gain access to a variable length register. A decoder decodes the instruction supplied from the memory and composes discriminators for assigning the variable length register and used areas therein. The first selectors read data stored in the used areas, which are assigned in the specified variable length register, in accordance with the discriminators composed in the decoder and coordinates the, areas storing the data therein. An arithmetic logical unit carried out operations based on …
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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 22, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 22, 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
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.