The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1981
Filed:
Apr. 20, 1979
Wilfried Kochert, Constance, DE;
Paul Hauff, Constance, DE;
Computer Gesellschaft Konstanz mbH, Constance, DE;
Abstract
An optical wand for automatically recognizing characters in a plurality of fonts incorporates a manually movable scanner incorporating a light source and a sensor array composed of a diode matrix. A first preprocessing unit is connected to receive the output from the scanner, and includes a correlation unit for buffering the data and apparatus for eliminating the effect of different characteristics of the individual photo diodes. The first preprocessing unit also includes a row tracking circuit and a segmentation circuit for presegmenting and for centering the character. Further segmentation, and filtering of the image is carried out by a second preprocessing unit which is decoupled from the first preprocessing unit, so that its operation is concurrent with that of the scanner. A recognition unit, decoupled from the second preprocessing unit, is connected thereto, and establishes individual values for the scanned characters by use of a quadratic polynomial classifier.