Patents by Inventor Wilhelmus J. Couwenberg

Wilhelmus J. Couwenberg 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).

  • Method and apparatus for resolution enhancement by synthesis of scan signals
    Patent number: 6285803
    Abstract: Digital image data of high resolution are obtained by synthesizing the scanning signals of two scanners, which scan an original document with mutually different lower resolutions. The synthesis includes transforming the scan signals of the first scanner into a first spectrum and transforming the scan signals of the second scanner into a second spectrum, superposing in predetermined manner versions of the first and second spectrum shifted over the spectral axis, and deriving a third spectrum from the result thereof. Retransformation of the third spectrum produces digital image data with a high resolution.
    Type: Grant
    Filed: September 4, 1998
    Date of Patent: September 4, 2001
    Assignee: OCÉ-Technologies B.V.
    Inventors: Wilhelmus J. Couwenberg, Johannes W. M. Jacobs