Patents by Inventor Julien Robillard

Julien Robillard 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).

  • Audio or video encoder, audio or video decoder and related methods for processing multi-channel audio or video signals using a variable prediction direction
    Patent number: 9398294
    Abstract: An encoder/decoder is based on a combination of two audio or video channels to obtain a first combination signal as a mid-signal and a residual signal derivable using a predicted side signal derived from the mid-signal. A decoder uses the prediction residual signal, the first combination signal, a prediction direction indicator and prediction information to derive decoded first channel and second channel signals. A real-to-imaginary transform can be applied for estimating the imaginary part of the spectrum of the first combination signal. The prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 19, 2016
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Julien Robillard, Matthias Neusinger, Christian Helmrich, Johannes Hilpert, Nikolaus Rettelbach, Sascha Disch, Bernd Edler
  • Audio encoder, audio decoder and related methods for processing multi-channel audio signals using complex prediction
    Patent number: 8655670
    Abstract: An encoder, based on a combination of two audio channels, obtains a first combination signal as a mid-signal and a residual signal derivable using a predicted side signal derived from the mid signal. The first combination signal and the prediction residual signal are encoded and written into a data stream together with the prediction information. A decoder generates decoded first and second channel signals using the prediction residual signal, the first combination signal and the prediction information. A real-to-imaginary transform may be applied for estimating the imaginary part of the spectrum of the first combination signal. For calculating the prediction signal used in the derivation of the prediction residual signal, the real-valued first combination signal is multiplied by a real portion of the complex prediction information and the estimated imaginary part of the first combination signal is multiplied by an imaginary portion of the complex prediction information.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: February 18, 2014
    Assignees: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V., Dolby International AB
    Inventors: Heiko Purnhagen, Pontus Carlsson, Lars Villemoes, Julien Robillard, Matthias Neusinger, Christian Helmrich, Johannes Hilpert, Nikolaus Rettelbach, Sascha Disch, Bernd Edler