Registers – Coded record sensors – Particular sensor structure
Reexamination Certificate
2000-04-07
2002-07-02
Frech, Karl D. (Department: 2876)
Registers
Coded record sensors
Particular sensor structure
C235S462010
Reexamination Certificate
active
06412695
ABSTRACT:
FIELD OF THE INVENTION
This invention relates generally to machine-readable optical codes.
BACKGROUND OF THE INVENTION
Optical codes such as bar codes and bar code scanners are well understood in the art. Bar codes, such as those found on consumer products, are typically intended for use by trained personnel. Bar codes have potential for use in other circumstances than prior art practice has allowed, but one significant inhibiting factor to such expanded usage involves the issue of training or knowledge on the part of the user. There exists a need for a way of presenting an optical code that will avoid, in whole or in part, such problems.
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“Punched Codes to Bar Codes—A 200 Year Journal”, Benjamin Nelson, 1997, Month.
Galvin Christopher B.
Reber William L.
Cyr Daniel St.
Frech Karl D.
Juffernbruch Daniel W.
Motorola Inc.
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