Multiprocessor system with program change function
CA 2076779 C · Owner: Nec Corporation · Inventors: Miyazono, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a multiprocessor system with program change function according to the present invention a special, CPU among a plurality of CPU's inputs program data from outside and outputs the control signal to cancel the control over the storage means of another CPU during program data input, and outputs the switching signal to specify the storage means to store the program data among a plurality of storage means. Then switching, signal from the special CPU causes the decoder as the selection means to select one of the plurality of storage means and the special CPU serially executes program data storing to the selected storage means which results in change of the program data in each storage means.
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 August 25, 1992 and granted August 18, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 25, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 25, 2014.
- 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.