Patents by Inventor Wolfgang Wernig

Wolfgang Wernig 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).

  • Driver circuit and method for driving an electronic component
    Patent number: 7145929
    Abstract: A driver circuit and a method drive an electronic component such as a laser diode with a variable electric current that is controlledly switched between at least two discrete current levels. The driver circuit includes circuit elements that damp ringing or initial transient oscillations that arise when switching the current between the current levels. The driver circuit includes a current mirror having a mirror amplification factor dependent on the frequency of the variable electric current. In order to counteract parasitic capacitances and/or inductances leading to the ringing, an inductance and/or a resistance are connected between the two series circuits making up the current mirror, a capacitance is connected parallel to a reference resistor of one of the series circuits, and/or a capacitance is connected across the voltage supply.
    Type: Grant
    Filed: May 13, 2004
    Date of Patent: December 5, 2006
    Assignee: Atmel Germany GmbH
    Inventors: Guenther Bergmann, Erwin Dotzauer, Holger Vogelmann, Herbert Knotz, Wolfgang Wernig
  • Driver circuit and method for driving an electronic component
    Publication number: 20040257140
    Abstract: A driver circuit and a method drive an electronic component such as a laser diode with a variable electric current that is controlledly switched between at least two discrete current levels. The driver circuit includes circuit elements that damp ringing or initial transient oscillations that arise when switching the current between the current levels. The driver circuit includes a current mirror having a mirror amplification factor dependent on the frequency of the variable electric current. In order to counteract parasitic capacitances and/or inductances leading to the ringing, an inductance and/or a resistance are connected between the two series circuits making up the current mirror, a capacitance is connected parallel to a reference resistor of one of the series circuits, and/or a capacitance is connected across the voltage supply.
    Type: Application
    Filed: May 13, 2004
    Publication date: December 23, 2004
    Inventors: Guenther Bergmann, Erwin Dotzauer, Holger Vogelmann, Herbert Knotz, Wolfgang Wernig