Patents by Inventor Mark Lucera

Mark Lucera has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • 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 DETECTING THE FOCAL DISTANCE OF THE LASER SCANNING BEAM PRODUCING THE ANALOG SCAN DATA SIGNAL BEING PROCESSED BY SAID DATA SIGNAL PROCESSOR
    Patent number: 6499661
    Abstract: The effects of paper/substrate noise are significantly reduced in multi-focal zone laser scanning systems by processing analog scan data signals with a scan data signal processor having a plurality of pass-band filters and amplifiers that are automatically selected for passing only the spectral components of an analog scan data signal produced when a bar code symbol is scanned at a particular focal zone in the laser scanning system. Two or more different pass-band filter structures can be provided for use in the scan data signal processor, wherein each pass-band filter structure is tuned to the spectral band associated with a particular focal zone in the laser scanning system. When a bar code symbol is scanned by a laser beam focused within the first focal zone or scanning range of the system, the pass-band filter structure associated with this focal zone or scanning range is automatically switched into operation.
    Type: Grant
    Filed: February 10, 2000
    Date of Patent: December 31, 2002
    Assignee: Metrologic Instruments, Inc.
    Inventors: Mark Lucera, Frank Check, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson
  • METHOD OF AND APPARATUS FOR PROCESSING ANALOG SCAN DATA SIGNALS DERIVED WHILE SCANNING A BAR CODE SYMBOL USING A LASER BEAM, WHEREIN THE DETECTED BEAM SPOT SPEED OF SAID LASER BEAM IS USED TO DYNAMICALLY SWITCH INTO OPERATION OPTIMAL PASS-BAND FILTERING CIRCUITS
    Patent number: 6494377
    Abstract: The effects of paper/substrate noise are significantly reduced in multi-focal zone laser scanning systems by processing analog scan data signals with a scan data signal processor having a plurality of pass-band filters and amplifiers that are automatically selected for passing only the spectral components of an analog scan data signal produced when a bar code symbol is scanned at a particular focal zone in the laser scanning system. Two or more different pass-band filter structures can be provided for use in the scan data signal processor, wherein each pass-band filter structure is tuned to the spectral band associated with a particular focal zone in the laser scanning system.
    Type: Grant
    Filed: February 9, 2000
    Date of Patent: December 17, 2002
    Assignee: Metrologic Instruments, Inc.
    Inventors: Mark Lucera, Frank Check, C. Harry Knowles, Xiaoxun Zhu
  • Laser scanning bar code symbol reader employing variable pass-band filter structures having frequency response characteristics controlled by time-measurement of laser-scanned bar code symbol
    Patent number: 6481625
    Abstract: The effects of paper/substrate noise are significantly reduced in multi-focal zone laser scanning systems by processing analog scan data signals with a scan data signal processor having a plurality of pass-band filters and amplifiers that are automatically selected for passing only the spectral components of an analog scan data signal produced when a bar code symbol is scanned at a particular focal zone in the laser scanning system. Two or more different pass-band filter structures can be provided for use in the scan data signal processor, wherein each pass-band filter structure is tuned to the spectral band associated with a particular focal zone in the laser scanning system. When a bar code symbol is scanned by a laser beam focused within the first focal zone or scanning range of the system, the pass-band filter structure associated with this focal zone or scanning range is automatically switched into operation.
    Type: Grant
    Filed: November 18, 1999
    Date of Patent: November 19, 2002
    Assignee: Metrologic Instruments, Inc.
    Inventors: Mark Lucera, Frank Check, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson
  • Reading system a variable pass-band
    Patent number: 6422467
    Abstract: The effects of papers/substrate noise are significantly reduced in multi-focal zone laser scanning systems by processing analog scan data signals with a scan data signal processor having a plurality of pass-band filters and amplifiers that are automatically selected for passing only the spectral components of an analog scan data signal produced when a bar code symbol is scanned at a particular focal zone in the laser scanning system. Two or more different pass-band filter structures can be provided for use in the scan data signal processor, wherein each pass-band filter structure is tuned to the spectral band associated with a particular focal zone in the laser scanning system.
    Type: Grant
    Filed: February 2, 1999
    Date of Patent: July 23, 2002
    Assignee: Metrologic Instruments, Inc.
    Inventors: Mark Lucera, Frank Check, C. Harry Knowles, Xiaoxun Zhu, LeRoy Dickson