Digitizer tablet system with dual-mode cursor/mouse
CA 2072975 A1 · Owner: Beauvais, Donald Andrew · Inventors: Beauvais, Donald Andrew; Schmenk, Steven R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
54) Title: DIGITIZER TABLET SYSTEM WITH DUAL-MODE CURSOR/MOUSE (57) Abstract, This is a dual-mode digitizing tablet system for providing inputs to a user program. There is a tablet (20) with an active surfac e and an output connected to the computer. A cursor (18) is moveable over the surface for generating a first signal reflecting the position thereof. Two switch-activating buttons (14) on the cursor generate a second signal when pushed. A position history table (48) holds a last position of the cursor (18) and a menu definition table (52) holds entries defining menu selections associated with the user program (56) as a function of preestablished positions on the tablet. Dual-mode logic …
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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 November 1, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 1, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 1, 2012.
- 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.