Raster scan digital display system
CA 1292335 C · Owner: Lenovo (Singapore) Pte. Ltd. · Inventors: Morel, Jeanne E.; Rackley, Darwin P.; Trynosky, Stephen W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An all points addressable raster scan graphics display system is operable in two modes. In the first mode, data is extracted from a refresh store serialized, modified, and applied to a display device at a first frequency. In the second mode data is extracted from the refresh store serialized and partially modified at said first frequency, but it is then further modified and passed to the display device at an even sub harmonic, for example half, of the first frequency. The further modification includes concatenation of successive groups of display data bits. Accordingly with the raster scan device operating, at a constant scan velocity the first mode, provides a high picture element …
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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 November 19, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 19, 2008.
- 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.