Patents by Inventor Johannes Gerardus Hendrikus Reekers

Johannes Gerardus Hendrikus Reekers 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).

  • Class-D Amplifier
    Publication number: 20080204132
    Abstract: The present invention relates to a class-D amplifier having a pre-processing unit (13). The pre-processing unit is arranged to limit the signal inputted to the amplifier when the amplifier switching frequency drops in order to avoid disturbances occurring when the switching frequency cuts through the amplifier output filter. To this end the amplifier has a comparator (14) that is arranged to compare the signal from the pre-processing unit with the amplifier supply voltage, and means for limiting the gain or increasing the attenuation of the pre-processing unit when the pre-processed signal amplitude exceeds a certain fraction of the supply voltage.
    Type: Application
    Filed: April 10, 2006
    Publication date: August 28, 2008
    Applicant: KONINKLIJKE PHILIPS ELECTRONICS, N.V.
    Inventors: Franciscus Bernardus Marie Van Horck, Johannes Gerardus Hendrikus Reekers