Patents by Inventor Alain Roure

Alain Roure 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).

  • Personal active noise cancellation method and device having invariant impulse response
    Patent number: 5987144
    Abstract: A selected electrical signal is first applied to the input of a source (30) to determine at least the impulse response (H), over a predetermined time, between the source output and the input of sensors (20). The values of the active cancellation control signal are determined in real time according to a predetermined law established in accordance with the previously determined impulse response (H), whereby the energy of the output signal from the sensors is minimised. The acoustic structure (2) is arranged so that the space (534) containing the sensors (20) and the source (30) is invariant at least during the determination of the active cancellation control signal and in the presence of a person, whereby the impulse response (H) between the output of the source (30) and the input of the sensors (20) may remain invariant.
    Type: Grant
    Filed: October 3, 1997
    Date of Patent: November 16, 1999
    Assignees: Technofirst, Centre National de la Recherche Scientifique
    Inventors: Christian Carme, Alain Roure
  • Ring
    Patent number: D462028
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: August 27, 2002
    Assignee: Alain Roure Creations S.A.
    Inventor: Alain Roure