Patents by Inventor Rangarajan T. Chari

Rangarajan T. Chari 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: 5524182
    Abstract: A method for compressing a typographic font and recovering the original font from the compressed font, first extracts the outline of each glyph in the font in turn, and analyzes the outline to find all the dominant points. The curvature and slope(s) at the dominant points are collected for clustering at the font level. The dominant points are matched algorithmically and the outline is dissected into strokes. A normalized stroke descriptor is computed for each stroke so that similarities between strokes that are related by translation, rotation, reflection and scaling can be made explicit. Thus a stroke is described by its normalized descriptor along with translation, rotation, reflection and scaling parameters. After each glyph outline has been so analyzed, the curvature and slopes at dominant points are clustered. Also, the normalized stroke descriptors are classified so as to put similar strokes into the same class. Each of these classes is assigned a unique identifier.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: June 4, 1996
    Assignee: Hewlett-Packard Company
    Inventors: Rangarajan T. Chari, Charles J. Blackbird