A method and apparatus for automatically transferring i/o blocks between a host system and a host adapter
CA 2375612 A1 · Owner: Qlogic Corporation · Inventors: Konda, Dharma R.; Micalizzi, Charles Jr.; Sippy, Chandru M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An input/output (I/O) host adapter (116) in an I/O system processes I/O requests from a host system (102) to a plurality of disk drives or other I/O devices (132-134). The host adapter (116) includes a circuit (202) to automatically transfer I/O requests (command blocks) from a request queue (110) in host memory (106) to a request buffer (210) in the host adapter's memory (138). The host adapter also includes a circuit (204) to automatically transfer I/O responses (status blocks) from a response buffer (212) in the host adapter's memory (138) to a response queue (112) of the host system's memory (102). By automating these transfer tasks a processing load placed on , a processor …
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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 June 1, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 1, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2022.
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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.