The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 1998
Filed:
Mar. 05, 1996
Paul Dvorkis, Stony Brook, NY (US);
Edward Barkan, Miller Place, NY (US);
Harold Charych, East Setauket, NY (US);
James Giebel, Easte Northport, NY (US);
Stephen Osterweil, Plainview, NY (US);
Sundeep Kumar, East Setauket, NY (US);
John Barile, Holbrook, NY (US);
Paul R Poloniewicz, East Setauket, NY (US);
Anthony D Biuso, South Setauket, NY (US);
Steven M Chew, East Northport, NY (US);
Symbol Technologies, Inc., Bohemia, NY (US);
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.