Text enhancement system
CA 2330600 A1 · Owner: Karidi, Ron J. · Inventors: Karidi, Ron J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A general purpose method for text enhancement that is independent of the type of scanner that is used to scan a document or the device printing the document and is tolerant of the artifacts and defects that the scanning process introduces on the text, mainly blurring. A window of size W x W is constructed on a scanned page with the target pixel at the center of the window and the amount of ink in the window is calculated and the number of pixels that are darker than the center pixel is counted. The window is moved along the page and each pixel on the page has a chance to be the center of a window and be allocated ink. The invention reallocates the amount of ink in full quantities …
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 July 7, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 7, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 7, 2021.
- 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.