Patents by Inventor Hidde de Haan

Hidde de Haan 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: 8290197
    Abstract: An electrostatic speaker system including at least one electrostatic speaker element having a pair of stators and a diaphragm therebetween, each of the stators and the diaphragm having an least one electrically conductive portion. The conductive portion of the diaphragm is patterned as a mesh, which may include gaps, and a conforming layer overlying the conducting portion of the diaphragm and disposed so as to cover gaps in the mesh. A speaker drive circuit provides soft clipping of the audio input signal so that the audio signal applied between the diaphragm and the stators does not exceed the maximum acceptable level that can be applied between the diaphragm and the stators of at least one speaker element.
    Type: Grant
    Filed: May 5, 2009
    Date of Patent: October 16, 2012
    Assignee: Transparent Sound Technology B.V.
    Inventors: Ronald Buining, Gaston Bastiaens, Hidde de Haan, Ton Hoogstraaten, Uwe Kempe, Karl-Heinz Fink, James Tuomy
  • Patent number: 8000483
    Abstract: Embodiments of an electrostatic loudspeaker utilize first and second stators and a diaphragm disposed therebetween, each of the stators and the diaphragm having an electrically conductive portion, wherein the conductive portions of the first stators are electrically coupled to each other; the conductive portions of the second stators are electrically coupled to each other; and the conductive portions of the diaphragms are electrically isolated from each other. The first stators and the second stators may be realized by common first and second stators may be mounted obliquely with respect to one another, so as to achieve differentially greater spacing between stators of the first one of the speaker elements than between stators of the second one of the speaker elements. Protective circuitry is also provided.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: August 16, 2011
    Assignee: Transparent Sound Technology B.V.
    Inventors: Hidde de Haan, James Tuomy, Ronald Buining, Gaston Bastiaens, Ton Hoogstraaten
  • Publication number: 20100272309
    Abstract: An electrostatic speaker system including at least one electrostatic speaker element having a pair of stators and a diaphragm therebetween, each of the stators and the diaphragm having an least one electrically conductive portion. The conductive portion of the diaphragm is patterned as a mesh, which may include gaps, and a conforming layer overlying the conducting portion of the diaphragm and disposed so as to cover gaps in the mesh. A speaker drive circuit provides soft clipping of the audio input signal so that the audio signal applied between the diaphragm and the stators does not exceed the maximum acceptable level that can be applied between the diaphragm and the stators of at least one speaker element.
    Type: Application
    Filed: May 5, 2009
    Publication date: October 28, 2010
    Inventors: Ronald Buining, Gaston Bastiaens, Hidde de Haan, Ton Hoogstraaten, Uwe Kempe, Karl-Heinz Fink, James Tuomy
  • Publication number: 20050147265
    Abstract: An electrostatic speaker system is provided wherein a multitude of speakers are provided in the system, each speaker having a thin electrically conductive film membrane sandwiched between a pair of stator plates. The film membrane is directly coupled to a high voltage AC audio signal emanating from a power amplifier for reproducing an audio signal. The high voltage AC audio signal is not applied to the stator plates but instead indirectly coupled to the pair of stators by a plurality of condensers (in a voltage multiplier circuit) of a electrical circuit contained within each speaker of the system. By applying the high voltage AC audio signal to the film membrane, approximately one-quarter of the voltage typically used to drive an electrostatic speaker is required.
    Type: Application
    Filed: May 25, 2004
    Publication date: July 7, 2005
    Inventors: Maarten Smits, Hidde de Haan