Character generator-based graphics apparatus
CA 1287416 C · Owner: Suwannukul, Sakarin · Inventors: Suwannukul, Sakarin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Character Generator Based Graphics Apparatus A graphics display apparatus using a character generation architecture is disclosed. A font memory is disclosed which can be addressed to provide a different character for each character position on a display screen. In this manner graphics images can be manipulated at character generation speeds. Further memory can be more efficiently used and font registers and additional pages of memory are not required to accommodate an expanded font list. In accordance with the present invention, attributes are generated in hardware so that the base text can remain unchanged even though the attributes of the text are changed. A unique echo circuit is …
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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 August 6, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 6, 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.