G - Physics – 06 – K
Patent
G - Physics
06
K
352/53.74
G06K 7/10 (2006.01) G06K 7/015 (2006.01)
Patent
CA 1169149
METHOD AND APPARATUS FOR THE IDENTIFICATION OF OBJECTS ABSTRACT OF THE DISCLOSURE Disclosed is a system for identifying objects appearing on an image window and bearing on a surface facing the window an identification in the form of a data field which includes at least one data track bearing contrasting symbols and a plurality of contrasting line patterns which identify the position and orientation of the data track. The window is optoelectronically scanned in a parallel line raster to generate a video signal which corresponds to the scanned contrast sequence appearing at the window. The con- trasting line patterns are initially identified in a sta- tionary detection raster and the angular inclination of the raster lines relative to the contrasting line pattern is determined. Thereafter, the symbols in the data track are read in a reading raster having relatively narrowly spaced raster lines by electronically rotating the reading raster through the intersection angle between the previously detected contrasting line pattern and the detection scan lines so that the reading scan lines are parallel to the data track. Thereafter, the data track is scanned and the symbols therein are decoded and further used.
362880
Scholze Hans
Wevelsiep Klaus
Kirby Eades Gale Baker
Scantron Gmbh & Co. Elektronische Lesegerate Kg
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