Patents by Inventor Samuel Lindenberg

Samuel Lindenberg 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).

  • Patent number: 4040012
    Abstract: Identification of a specimen signature is provided by comparing the specimen with a previously recorded template signature. The comparison is performed by recording, for both specimen and template signatures, signals representing forces in three directions while generating these signatures. For handwritten signatures these forces are called pressure, for the force perpendicular to the plane of the paper, X for the left-right force in the plane of the paper, and Y for the near-far force in the plane of the paper.The recorded specimen signals are divided into equal parts, for example halves, and successive comparisons are made of the equal parts, first without any displacement, then with relative displacements, then by expanding the length of parts relative to one another, then by reducing the length of parts relative to one another, to find the highest correlation values for all of these comparisons. These are combined and compared with a reference.
    Type: Grant
    Filed: April 28, 1976
    Date of Patent: August 2, 1977
    Assignee: Stanford Research Institute
    Inventors: Hewitt David Crane, Daniel Errol Wolf, Samuel Lindenberg