Liquid crystal display driving system
CA 2097469 A1 · Owner: Sakamoto, Tsutomu · Inventors: Sakamoto, Tsutomu; Tsuzuki, Yoshiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A Liquid crystal display driving system includes a liquid crystal display unit which has a screen of matrix arrangement comprised of a plurality of pixels data lines, for driving the columns of the pixels and scanning signal lines for driving the rows of the pixels a circuit for, supplying video signal to the pixels through the data lines a scanning signal line controller for supplying progressive scanning signal to the scanning signal lines a first sample-, hold circuit for holding video signals for the pixels corresponding to odd lows on a first half side of the screen and for supplying the held video signals to the data lines corresponding to the first half side on the screen based on a …
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 May 27, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 27, 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.