Registers – Coded record sensors – Particular sensor structure
Patent
1996-03-05
1998-01-06
Hajec, Donald T.
Registers
Coded record sensors
Particular sensor structure
235456, 235470, G06K 710
Patent
active
057058008
ABSTRACT:
A scanner determines whether a target is a bar code symbol and, if so, whether that symbol is one-dimensional or two-dimensional. For two-dimensional symbols, the scanner aligns a scanning pattern with the symbol and expands the scanning pattern to reach only to the top and bottom edges of the symbol, not beyond. The scanner also has a microprocessor-control scanning engine that uses a coil to drive a scanning element and pick up feed back signals from the scanning element. A pulse-width-modulated regulator also provides fast and efficient operation for driving the coil. The scanning engine can also be designed to generate a pattern that precesses across the target, and a powerful interface to the scanning engine allows decoding and control logic to work efficiently with and independently of the scan engine.
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Barile John
Barkan Edward
Biuso Anthony D.
Charych Harold
Chew Steven M.
Hajec Donald T.
Lee Michael G.
Symbol Technologies Inc.
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