Videographics display system
CA 2046534 A1 · Owner: Ncr Corporation · Inventors: Ten Hoeve, Peter P.; Diepstraten, Wilhelmus J. M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure A videographics display system includes a graphics processor and a video RAM memory including a first portion storing video information and a second portion which is utilized for non-video information such as program information, message buffers font, tables, etc. The second portion includes dispersed memory regions formed by row portions which are not used for video information. The system includes multiplexing means effective to address the second memory portion by contiguous addresses.
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 9, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 9, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 9, 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.