Patents by Inventor Robert C. Melamud

Robert C. Melamud 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).

  • Dynamic threshold device
    Patent number: 4345314
    Abstract: A two-dimensional history of reflectance values, from which black-white threshold decisions are made, is stored in a relatively small amount of memory. Updating of the history by non-linear functions is accomplished through the use of look-up tables.
    Type: Grant
    Filed: November 19, 1980
    Date of Patent: August 17, 1982
    Assignee: International Business Machines Corporation
    Inventors: Robert C. Melamud, James D. Nihart, James M. White