Patents by Inventor Manfred Nopp

Manfred Nopp 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).

  • Tuning circuit for a filter
    Patent number: 7002404
    Abstract: The invention relates to a tuning circuit for tuning a filter stage, which has an RC element (1) with an RC time constant (?), with the RC time constant (?) being the product of the resistance of a resistor (R1) in the RC element (1) and the capacitance of a capacitor (C1), which is connected in series with the resistor (R1), in the RC element (1), having a comparator (10) for comparison of the voltage which is produced at the potential node (4) between the resistor (R1) and the capacitor (C1), with a reference ground voltage; and having a controller (15) which varies the charge on the capacitor (C1) in the RC element (1) until the comparator (10) indicates that the voltage which is produced at the potential node (4) is equal to the reference ground voltage, with the controller (15) switching a capacitor array (26) as a function of the charge variation time, which capacitor array (26) is connected in parallel with the capacitor (C1) in the RC element (1), in order to compensate for any discrepancy between the
    Type: Grant
    Filed: February 6, 2004
    Date of Patent: February 21, 2006
    Assignee: Infineon Technologies AG
    Inventors: Richard Gaggl, Manfred Nopp, Peter Pessl, Christian Schranz, Dietmar Straussnigg
  • Tuning circuit for a filter
    Publication number: 20040169565
    Abstract: The invention relates to a tuning circuit for tuning a filter stage, which has an RC element (1) with an RC time constant (&tgr;), with the RC time constant (&tgr;) being the product of the resistance of a resistor (R1) in the RC element (1) and the capacitance of a capacitor (C1), which is connected in series with the resistor (R1), in the RC element (1), having a comparator (10) for comparison of the voltage which is produced at the potential node (4) between the resistor (R1) and the capacitor (C1), with a reference ground voltage; and having a controller (15) which varies the charge on the capacitor (C1) in the RC element (1) until the comparator (10) indicates that the voltage which is produced at the potential node (4) is equal to the reference ground voltage, with the controller (15) switching a capacitor array (26) as a function of the charge variation time, which capacitor array (26) is connected in parallel with the capacitor (C1) in the RC element (1), in order to compensate for any discrepancy bet
    Type: Application
    Filed: February 6, 2004
    Publication date: September 2, 2004
    Inventors: Richard Gaggl, Manfred Nopp, Peter Pessl, Christian Schranz, Dietmar Straussnigg