Patents by Inventor Volker Stefan Gierenz

Volker Stefan Gierenz 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: 7327294
    Abstract: An automatic gain control circuit has a gain determination circuit (B2) which determines a first gain factor (g), and a first gain controller (B3) which controls an amplitude of an input signal (S1) with the first gain factor (g) to supply a gain controlled signal (S3). A processing circuit (B1; B1, B11) with a predetermined limited dynamic range processes the gain controlled (S3) to obtain an output signal (S4; S2). The automatic gain control circuit further comprises a compensation circuit (B5) which determines a second gain factor (dg) based on the first gain factor (g) and input parameters (DL, TR, DV) which define a time variation of the second gain factor (dg), and a second gain controller (B1; B10) which receives the second gain factor (dg) to obtain a compensated output signal (S2) that is substantially compensated for an amplitude change of the gain controlled signal (S3) due to a change of the first gain factor (g).
    Type: Grant
    Filed: April 22, 2004
    Date of Patent: February 5, 2008
    Assignee: NXP B.V.
    Inventors: Volker Stefan Gierenz, Hendrik Ten Pierick