Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation
Patent
1993-08-19
1994-10-04
Shepperd, John
Active solid-state devices (e.g., transistors, solid-state diode
Responsive to non-electrical signal
Electromagnetic or particle radiation
257465, H01L 3106
Patent
active
053529227
ABSTRACT:
The method and apparatus of this invention facilitate operation of a bar code reader over a wider range of working angle and for a wider range of bar code densities. The invention includes improved optics and sensing elements. The optics and sensing elements and/or the associated circuitry are arranged to provide two channels of data derived form 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.
REFERENCES:
patent: 3381133 (1968-04-01), Barnes et al.
patent: 3716699 (1973-02-01), Eckert, Jr. et al.
patent: 4013893 (1977-03-01), Hertig
patent: 4127932 (1978-12-01), Hartman et al.
patent: 4312114 (1982-01-01), Schoolar
patent: 5051567 (1991-09-01), Tedesco
Barkan Edward
Goren David P.
Katz Joseph
Li Yajun
Mazz Thomas
Shepperd John
Symbol Technologies Inc.
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