G - Physics – 06 – K
Patent
G - Physics
06
K
354/56
G06K 9/78 (2006.01) G06K 9/20 (2006.01)
Patent
CA 1162651
Abstract: The invention relates to a method and apparatus for identifying objects (e.g. consumer products in a super- market) appearing in random positions and orientations and for random times on an image window and having an identification on the surface facing the image window in the form of a data field having contrasting indicia in at least one data track. The data field is first scanned with a scanning raster until a product identification code is recognized denoting the position and orientation of the data track. The data track is then read with a closely- spaced reading raster and converted to a videosignal. The amplitude of the videosignal is coded into binary digits at discrete time points and the digits are stored in a memory matrix organised into columns and rows in such a manner that an image of the data track is stored in the memory. Mutually overlapping partial regions of the memory are than read out in a pre-arranged sequence and fed to a decoder capable of accepting and decoding the information in this form. In this way, the information is converted from a row-by-row sequence produced by the reading raster into a succession of digits corresponding to individual partial regions of the data track for the recognition of individual symbols appearing therein.
375539
Scholze Hans
Sturm Bernhard
Wevelsiep Klaus
Kirby Eades Gale Baker
Scantron G.m.b.h. & Co. Elektronische Lesegeraete Kg
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