Universal cd-rom interface
CA 2122079 C · Owner: Ati Technologies Inc. · Inventors: Li, Raymond M.L.; Quan, Henry
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a universal peripheral interface comprised of control logic circuits for a plurality of peripherals carrying different signals on different pins of respective peripheral connectors, a single interface connector for mating with any of the peripheral connectors, a first multiplexer for interfacing any of the control logic circuits with the single interface connector and for switching particular lines of each of the control logic circuits carrying particular signals to particular pins of the single connector, and apparatus for controlling the multiplexer to map the lines to the particular pins of the single connector.
Read the whole patent
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 April 25, 1994 and granted February 23, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2016.
- 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.