DocumentCode
1534392
Title
Noise-limited reading of bar codes
Author
Boie, Robert A. ; Turin, William
Author_Institution
AT&T Bell Labs., Florham Park, NJ, USA
Volume
44
Issue
6
fYear
1997
fDate
12/1/1997 12:00:00 AM
Firstpage
816
Lastpage
824
Abstract
The ubiquitous supermarket checkout scanner is a well-engineered and effective device. Existing scanners rely on simple and low-cost signal processing to interpret bar-code signals, which imposes restrictions on the system noise power that they can tolerate. In this paper, the authors describe the relationships between engineering parameters of the system that limit reader performance. If the combined noise is Gaussian, they show that the reader error probability depends on a single parameter, which they call a timing signal-to-noise ratio
Keywords
bar codes; computer peripheral equipment; digital filters; filtering theory; image processing; image scanners; mark scanning equipment; noise; Gaussian noise; bar-code signal interpretation; engineering parameters; noise-limited bar code reading; reader error probability; reader performance limitations; supermarket checkout scanner; timing signal-to-noise ratio; Error probability; Filters; Gaussian noise; Jitter; Laser theory; Light scattering; Photodetectors; Signal processing; Signal to noise ratio; Timing;
fLanguage
English
Journal_Title
Industrial Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0278-0046
Type
jour
DOI
10.1109/41.649943
Filename
649943
Link To Document