Patents by Inventor Christian Wiechering

Christian Wiechering 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: 6768561
    Abstract: In a method for processing signals in an electronic engraving machine for engraving printing forms, in particular printing cylinders used for rotogravure, an engraving control signal is obtained by superimposing engraving data, representing tone values between “white” and “black” which are to be engraved, with a periodic screen signal for generating a gravure screen. The engraving control signal guides the lifting movement of the stylus of an engraving element. As a result of the lifting movement of the stylus, a series of cups arranged in the gravure screen is engraved on the printing form. To compensate an incorrect lifting movement of the stylus (rebound effect, lag effect), the engraving data undergo digital filtering before superposition of the gravure screen.
    Type: Grant
    Filed: February 28, 2000
    Date of Patent: July 27, 2004
    Assignee: Hell Gravure Systems GmbH
    Inventors: Dieter Fangmeyer, Christian Wiechering, Bernd Lübcke
  • Patent number: 6430462
    Abstract: The invention relates to a method and a circuit for processing signals in an electronic graving machine, in which a series of cups arranged in a gravure screen is engraved in a printing cylinder by a burin of a graving element guided by an engraving control signal (G). In a digital signal processor (13), a transfer function is determined from function value data used to calculate a periodic screen signal for producing the gravure screen; from adjustment data for adjusting the depth of cut; from digital adjustment parameters for calibrating “light” (white) and “dark” (black); and from control data (SD). The transmission coefficients of the transmission function and/or the transmission function can be modified by the control data (SD).
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: August 6, 2002
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Bernd Lübcke, Christian Wiechering, Armin Jacht
  • Patent number: 5036403
    Abstract: A method for operating a circuit arrangement to improve the bounce behavior of an electromagnetically driven engraving system by producing a correction signal from a stored original drive signal and supplying the correction signal to the engraving system chronologically preceding application of the original drive signal.
    Type: Grant
    Filed: January 22, 1990
    Date of Patent: July 30, 1991
    Assignee: Dr. Ing. Rudolf Hell GmbH
    Inventors: Rolf Hupka, Christian Wiechering