Patents Assigned to Micro-Epsilon Mess Technik
  • Capacitive method and apparatus for accessing information encoded by a differentially conductive pattern
    Patent number: 6202929
    Abstract: Barcode patterns or other meaningful patterns are printed with a differentially conductive ink. A sensor incorporating a plurality of capacitive couplings distinguishes features of the patterns by comparative measurements that are largely independent of variations between the sensor and the patterns affecting all of the couplings. The patterns can be distinguished despite being hidden from view, such as inside sealed envelopes.
    Type: Grant
    Filed: March 10, 1999
    Date of Patent: March 20, 2001
    Assignees: Micro-Epsilon Mess Technik, Translucent Technologies, LLC
    Inventors: Gerrit L. Verschuur, Franz Hrubes