Apparatus for dynamically switching the clock source of a data processing system
CA 1302583 C · Owner: Bull Hn Information Systems Inc. · Inventors: Calle, Jaime
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PATENT", 52003007 8 June 1987, ABSTRACT OF THE INVENTION A data processing system includes a first and a second central system wherein the central processing unit (CPU) of the first central system is operatively connected to the system control unit (SCU) of the second central system and the CPU of the second central system is operatively connected to the SCU of the first central system, each central system including a service processor and a timing subsystem for providing clocking signals. Each central system includes an apparatus for distributing the clocking signals such that each central system is clocked from predetermined ones of the clocking signals in response to control signals from …
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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
- Granted June 2, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 2, 2009.
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Timeline
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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.