Method for locating the position and orientation of a fiduciary mark
CA 2217458 C · Owner: Bjorner, Johannes A. S. · Inventors: Recktenwalt, James V.; Morton, James S.; Lais, Kenneth A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Fiduciary mark detection system 10 usable with an over-the-belt optical character recognition, (OCR) reader for ascertaining the position and orientation of text 59 within the destination, address on a parcel 30 moving along a conveyor 20. The fiduciary mark detection system 10, includes a charged coupled device (CCD) array 60 an analog-to-digital (A/D) , converter 70 a, general purpose computer 80, and a software program 100. The image processing software, program 100 comprises projection histograms convolution filtering, correlation, radial variance, first moments of inertia, edge image analysis Hough method, and , detection, confidence testing. An orientation defining mark 50 …
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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
- Filed April 9, 1996 and granted February 27, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2018.
- 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.