Data transferring system comprising an input-output channel unit capable of predicting an overrun in a data processing device
CA 2009450 C · Owner: Nec Corporation · Inventors: Oyadomari, Hajime
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
On transferring transfer data between a peripheral controller (11) and an input-output channel unit (12), an overrun predicting circuit (45) of the input-output channel unit predicts occurrence of an overrun with reference to an amount of transfer data memorized in a buffer memory (39) and produces an overrun prediction signal (46). The overrun prediction signal is delivered to the peripheral controller by the use of a start informing acknowledgement signal line (15) which is used in transferring a start informing acknowledgement signal from the input-output channel unit to the peripheral controller before the transfer data is transferred between the peripheral controller and 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
- Filed February 7, 1990 and granted July 21, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 7, 2012.
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