Video moving message display
CA 2090124 A1 · Owner: Imtech International, Inc. · Inventors: Geyer, Richard; Noble, Paul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A video moving message system in which images are shifted one pixel width at a time from one video monitor to another. The video monitors (1) are arranged side by side and/or stacked one over the other. Row and column counters (5, 6) are reassigned for a video read only memory matrix (3) so as to enable accessing of image data stored in the read only memory through these reassigned counters. The image data is read out and sent pixel on the video monitors (1) which correspond to the row and counter addresses in the read only memory matrix (3). By reassigning during each blanking interval of a video monitor (1), the image on the video monitor (1) appears to shift by at least one pixel width …
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 July 23, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 23, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2013.
- 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.