Patents by Inventor Charles L. Hewitt

Charles L. Hewitt 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).

  • Enhanced security fingerprint sensor package and related methods
    Patent number: 5956415
    Abstract: A fingerprint sensor package includes a tamper-resistant housing, a fingerprint sensor mounted in the housing, and an encryption output circuit mounted within the housing and operatively connected to the fingerprint sensor for generating an encrypted output signal related to a sensed fingerprint. The fingerprint sensor package may include a processor operatively connected between the fingerprint sensor and the encryption circuit. In addition, the package may also include a reference fingerprint memory for storing reference fingerprint information. Accordingly, the processor may have the capability to determine if a sensed fingerprint matches a stored reference fingerprint. To further enhance security of the stored reference fingerprint information, the sensor package also preferably includes a removing circuit or device for removing reference fingerprint information from the reference fingerprint storage means responsive to tampering.
    Type: Grant
    Filed: January 26, 1996
    Date of Patent: September 21, 1999
    Assignee: Harris Corporation
    Inventors: Karl W. McCalley, Steven D. Wilson, Dale R. Setlak, Nicolaas W. van Vonno, Charles L. Hewitt