Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2006-10-24
2006-10-24
Stcyr, Daniel (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S462250
Reexamination Certificate
active
07124949
ABSTRACT:
The influence of speckle noise in degrading performance of a reader for electro-optically reading a multiple element symbol is reduced by constructing wavelets for each element width, correlating each wavelet with a differentiated signal derived from light scattered from the symbol to obtain a correlated signal having peaks, each peak corresponding to a middle of a respective element, and processing the peaks to decode the symbol. Edge detection of the elements, which is susceptible to speckle noise degradation, is not used for decoding.
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Kirschstein et al.
Stcyr Daniel
Symbol Technologies Inc.
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