Reduced connection for 22 character gas panel
CA 1087331 A · Owner: International Business Machines Corporation · Inventors: Criscimagna, Tony N.; Trushell, James B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In driving gas panel or plasma display devices characters, are generated on the panel display as a sequence of dots by applying appropriate drive signals to selected orthogonal conductors each, conductor requiring an associated driver. In a low character count small plasma display such as a single row display utilizing a 5 x 7 dot character matrix, a significant load is presented to the horizontal drivers, while a substantial number of drivers are required to drive the vertical axis. To improve the load distribution and increase the drive efficiency of such a system, the horizontal conductors are divided into four distinct groups, with associated drivers while a, single set of vertical …
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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
- Granted October 7, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 7, 1997.
- 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.