Granted Patent
Utility
US 6,572,018 · App. 09/500,875
METHOD OF AND APPARATUS FOR PROCESSING ANALOG SCAN DATA SIGNALS DERIVED BY SCANNING BAR CODE SYMBOLS USING A LASER BEAM, WHEREIN A REAL-TIME BAR CODE ELEMENT DETECTOR IS USED TO CONTROL THE DETECTION OF ZERO-CROSSINGS OCCURRING IN THE SECOND DERIVATIVE OF SAID ANALOG SCAN DATA SIGNALS
Inventors:
Mark Lucera, Frank Check, C. Harry Knowles, Xiaoxun Zhu
Patented Case
View Patent ↗
Granted: Jun 3, 2003
Filed: Feb 9, 2000
Inventors
Mark Lucera
Frank Check
C. Harry Knowles
Xiaoxun Zhu
Assignee (at issue)
METROLOGIC INSTRUMENTS, INC.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.