Registers – Coded record sensors – Particular sensor structure
Patent
1997-09-07
2000-10-24
Frech, Karl D.
Registers
Coded record sensors
Particular sensor structure
23546219, G06K 710
Patent
active
06135354&
ABSTRACT:
A barcode image processing system which processes video signals including video data representing images of barcode labels to be decoded and verified. A video signal containing video data representative of successive images of a plurality of barcode labels is processed to extract the video data and the horizontal and vertical synchronization signals from the video signal. A digitalization circuit is provided which digitalizes the video signal over a varied threshold voltage. The range or deviation of the threshold voltage which yields decodable video data is used as a measure of a quality of a barcode label. A gate trigger signal is generated which is synchronized to the vertical synchronization signal and which controls when a barcode decoder decodes video data for a horizontal line taken from a barcode image. A masking circuit is provided to mask out portions of a video field except for a portion sufficient to contain one barcode label, which is useful in the situation where barcode labels are printed very close together.
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Frech Karl D.
Label Vision Systems, Inc.
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