Microcomputer system including a microprocessor reset circuit
CA 2016401 C · Owner: International Business Machines Corporation · Inventors: Begun, Ralph M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A microprocessor based computer system is provided which includes a reset circuit having a phase error detector for detecting a phase error between an initial reset signal and a clock signal provided to the microprocessor clock input. The reset circuit further includes a phase error corrector for adjusting the phase of the clock signal if a phase error is detected so as to substantially minimize the phase error. The reset circuit includes a reset signal regenerator for providing a new reset signal to the reset input of the microprocessor when the phase of the clock signal is adjusted.
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 May 9, 1990 and granted January 11, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 9, 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.