Patents by Inventor Ralf Tiede

Ralf Tiede 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: 4564859
    Abstract: A method and apparatus for producing color separations for single color printing in electronic reproduction, for example in textile, decorative, or packaging printing. A colored master is optoelectronically scanned point-by-point and line-by-line to obtain color signals. Color recognition signals which identify the different colors of the master during scanning are produced from the color signals. Further corrected color separation signals are obtained from the color signals. The corrected color separation signals are controlled by selected color recognition signals representing selected colors of the master. The color separation signals are switched on by the color recognition signals when the corresponding colors in the master are identified, and are switched off when the colors are not present. At least two switched on color separation signals form a recording signal which controls the recording of the color separations for the different colors of the master.
    Type: Grant
    Filed: October 19, 1983
    Date of Patent: January 14, 1986
    Assignee: Dr. Ing. Rudolf Hell GmbH
    Inventors: Hans-Georg Knop, Michael Nowak, Friedrich Redecker, Ralf Tiede