Patents by Inventor Dale R. Donchin

Dale R. Donchin 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: 5615283
    Abstract: A pattern recognition device tracks the angular movements made by a pointing device such as a mouse in generating a pattern of lines. A pattern code is generated if the angular movements match those of a pattern code in a lookup table. The pattern matching for the shape is done without regard to size, is insensitive to expected variations in hand-drawn strokes, requires minimal computer processing and data storage, and can distinguish between identical patterns that differ only in the order in which their constituent line segments were drawn.
    Type: Grant
    Filed: September 23, 1994
    Date of Patent: March 25, 1997
    Assignee: Digital Equipment Corporation
    Inventor: Dale R. Donchin