Anti-alias font generation
CA 2013056 C · Owner: Witherspoon, Joseph Brunson, Iii · Inventors: Gordon, Robert Douglas; Witherspoon, Joseph Brunson, Iii; Beitel, Bradley James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of generating a second, substantially anti-aliased, representation of a character from a first representation. The second representation is comprised of horizontal lines of dots that are shifted horizontally relative to dots of the first representation each dot of, the first representation having a value DOT1 associated therewith. The method include a step of for each, horizontal line (1-m) within the first representation of a character and for each dot (1-j) within a horizontal line, (a) determining a modifying value (DOT1k) associated with a dot (k) of the first representation DOT1k being a function of DOT1 of the dot(k). The method includes another step of determining a value …
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 March 26, 1990 and granted August 2, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 26, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 26, 2012.
- 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.