Granted Patent
Utility
US 6,588,663 · App. 09/501,903
MULTI-FOCAL LASER SCANNING BAR CODE SYMBOL READING SYSTEM EMPLOYING A SCAN DATA SIGNAL PROCESSOR HAVING A VARIABLE PASS-BAND FILTER STRUCTURE WITH FREQUENCY CHARACTERISTICS CONTROLLED BY MEASURING THE BEAM SPOT SPEED OF THE LASER SCANNING BEAM PRODUCING THE ANALOG SCAN DATA SIGNAL BEING PROCESSED BY SAID SCAN DATA SIGNAL PROCESSOR
Inventors:
Mark Lucera, Frank Check, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson
Patented Case
View Patent ↗
Granted: Jul 8, 2003
Filed: Feb 10, 2000
Inventors
Mark Lucera
Frank Check
C. Harry Knowles
Xiaoxun Zhu
LeRoy Dickson
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.