Power supply and oscillator for a computer system providing automatic selection of supply voltage and frequency
CA 2063250 C · Owner: Yuan, Andy C. · Inventors: Fairbanks, John P.; Yuan, Andy C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a power system (13) for use with a computer the power system (13) having incorporated in it circuitry for automatically varying the supply voltage (VDD) output to the computer system based upon the magnitude of the current being supplied to the computer by the power system. Also included in the computer system is a variable frequency clock circuit the frequency, of which changes based upon the supply voltage (VDD) produced by the power system (13). This permits during computer sys-, tem operation where low voltage and low clock speeds will be sufficient to provide the performance needed achievement of a power saving since both the voltage and frequency at which the system …
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 June 28, 1990 and granted April 1, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2012.
- 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.