Nubus dual display card
CA 2097954 A1 · Owner: Fox, Christopher M. · Inventors: Blume, David; Di Stefano, Charles; Fox, Christopher M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A dual display generator card (10) that is insertable into a Nubus card slot of a computer system (12) that permits the simultaneous generation of images for two display monitors (13, 14). The dual display generator card (10) includes a Nubuscomputer interface (21) and two display channels (30a 30b). Each display channel, (30a, 30b) includes a channel memory buffer (31 32), two parallel video translators, (33) and a digital to analog converter (36). Video output signals from the each display channel (30a, 30b) are provided from the digital to analog converter (36) and are coupled to each respective video display monitor (13 14). Appropriate timing, address, and control hardware are provided …
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 8, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2015.
- 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.