Registers – Coded record sensors – Particular sensor structure
Patent
1994-09-28
1996-04-09
Shepperd, John
Registers
Coded record sensors
Particular sensor structure
G06K 710
Patent
active
055063926
ABSTRACT:
A bar code reader capable of working over a wider range of working angle and for a wider range of bar code densities, using improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived from the scanned bar code. The two channels have differing resolutions. Analysis of the data from the two channels provides a single decoded result. As the working angle and density vary at least one of the resolutions will be appropriate for sensing all or most of the bar coded data. The data from the channel producing a valid result can be used, or if neither channel produces a valid result by itself, data from each channel can be analyzed and valid portions of the data from both channels combined to produce the single decoded result. The different resolution of the two channels can be provided using different size photodetection areas, e.g., small and large groups of active areas on a sensor array.
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Barkan Edward
Goren David P.
Katz Joseph
Li Yajun
Mazz Thomas
Shepperd John
Symbol Technologies Inc.
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