Patents by Inventor Krista Elizabeth Nunn

Krista Elizabeth Nunn 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).

  • Optical detection of alignment and/or absence of tape cartridge leader pin
    Patent number: 6739536
    Abstract: To detect alignment and/or absence of a tape leader pin in an opening of a tape cartridge, a light source scans the opening. Detection logic analyzes the detected reflection waveform signal for deviation from a cylindrical surface reflection of the tape leader pin, if any, such as elliptical or conical, representing tilt angle misalignment of the pin. Further, both ends of the pin are scanned for difference in displacement and for difference in amplitude, displacement representing tilt in the direction of scan, and amplitude representing that one end or the other is likely to have been pulled into the cartridge. Low amplitude of both represents absence of the pin.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: May 25, 2004
    Assignee: International Business Machines Corporation
    Inventors: Krista Elizabeth Nunn, Mark Allan Taylor
  • OPTICAL DETECTION OF ALIGNMENT AND/OR ABSENCE OF TAPE CARTRIDGE LEADER PIN
    Publication number: 20040065761
    Abstract: To detect alignment and/or absence of a tape leader pin in an opening of a tape cartridge, a light source scans the opening. Detection logic analyzes the detected reflection waveform signal for deviation from a cylindrical surface reflection of the tape leader pin, if any, such as elliptical or conical, representing tilt angle misalignment of the pin. Further, both ends of the pin are scanned for difference in displacement and for difference in amplitude, displacement representing tilt in the direction of scan, and amplitude representing that one end or the other is likely to have been pulled into the cartridge. Low amplitude of both represents absence of the pin.
    Type: Application
    Filed: October 4, 2002
    Publication date: April 8, 2004
    Applicant: International Business Machines Corporation
    Inventors: Krista Elizabeth Nunn, Mark Allan Taylor