Data processing interrupt apparatus
CA 1102004 A · Owner: Honeywell Information Systems Inc. · Inventors: Negi, Virendra S.; Miu, Ming T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Interrupts generated within a data processor and an interrupt received from a peripheral device coupled with the processor are prioritized and, unless suppressed are coupled, to generate an interrupt signal for use in addressing a routine for servicing the particular interrupt. All further interrupts are suppressed during the time required to service the interrupt and, depending upon the type of interrupt the interrupt may be, suppressed for one or two instruction times for debug purposes or under computer program control as required for a particular operation. -1-
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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 May 26, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 26, 1998.
- 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.