Input/output interrupt system
CA 1200912 A · Owner: Fujitsu Limited · Inventors: Tsuru, Masato; Matsubara, Yoshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data processing system having a channel processing device provided with an input/output device which requires input/output interrupt, the channel processing device responding to a request for input/output interrupt, propagating the request for input/output interrupt to a central processing unit, and reporting the state of the input/output device to the central processing unit. The channel processing device comprises an interrupt detecting means which detects the request for input/ output interrupt sent from the input/output device to the channel processing device, a status information detecting means which detects whether the status information sent from the input/output device to the …
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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 February 18, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 18, 2003.
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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.