Process and device for the control of a microtip fluorescent display
CA 2128357 A1 · Owner: Garcia, Michel · Inventors: Garcia, Michel; Sarrasin, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for the control of a microtip fluorescent screen or display formed from pixels arranged in accordance with L rows and M columns of images able to have a discreet number of Q grey tones in which the column, voltage values are chosen in a strictly increasing sequence of N+1 values such that the row selection time being subdivided into S equal time intervals t, each voltage value is applied an integral number of times .DELTA.t (NxS)+1 representing, the number of grey levels with N ? 1 and S ? 2. During a row, selection time the corresponding column voltage assumes a first value Va during a certain number of time intervals .DELTA.t then during the remaining …
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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 July 19, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 19, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 19, 2016.
- 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.