Method and apparatus for symbol recognition using multidimensional preprocessing
CA 2105852 C · Owner: Lecun, Yann Andre · Inventors: Lecun, Yann Andre
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Data samples describing a plurality of micro-segments that compose a symbol to be recognized are received from a device (10) such as an electronic pad. A preprocessor (12) maps the micro-segments into cells of an array that has several feature dimemsions. The preprocessor assigns values to the cells based on the length of a micro-segment associated with the cell and how well the features of the, associated micro-segment correspond to the feature label of the cell. The cell values are used as inputs to a neural network (14) that identifies the symbol. In one embodiment, recognizing symbols from large groups of symbols is facilitated by using a plurality of neural networks. Each neural …
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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 September 9, 1993 and granted May 4, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 9, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 9, 2015.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.