Inventor
LUCERA MARK G
US4 patents
Patents
4 patentsUS6616040B1Sep 9, 2003
Analog scan data signal processor employing a time-domain substrate noise filter for non-linearly processing analog scan data signals and reducing substrate noise signal levels therein prior to first derivative signal generation and processing operations carried out within said analog scan data signal processor
METROLOGIC INSTR INC10 citations73
US6572018B1Jun 3, 2003
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
METROLOGIC INSTR INC10 citations73
US6354505B1Mar 12, 2002
Scan data signal processor employing pass-band filter structures having frequency response characteristics dynamically switched into operation by control signals indicative of the focal zone of the laser beam during bar code symbol scanning
METROLOGIC INSTR INC6 citations73
US6527186B1Mar 4, 2003
Scan data signal processor employing band-pass filter having frequency response characteristics controlled by the depth of focus of the laser scanning beam
METROLOGIC INSTR INC3 citations62