Computer keyboard-midi interface
CA 2295201 A1 · Owner: Ambry, David John · Inventors: Romagnano, Anthony; Ambry, David John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A signal conversion method and a device (12) for interfacing a PC keyboard (14) with a MIDI sound-generator such as a sound-card fitted within a computer (20) or a standalone sound generator (22). Interface unit (12) can also take inputs from a MIDI keyboard (18) and a PC joystick (16) the latter being used , for sound-bending. Interface (12) includes input and output connectors (44 48, 52, 50, 54 and 62) and associated adaptor circuits (46 60, 58, 56 and 64) , for communication with a microprocessor (40). Read only memories (42 and 43) containing factory and user pre-set data are accessed by the microprocessor (40). In one mode of operation, PC signals generated by the keyboard's …
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 June 18, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 18, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 18, 2020.
- 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.