Patents by Inventor Manfred Lutzky

Manfred Lutzky 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).

  • Publication number: 20130332174
    Abstract: An audio codec supporting both, time-domain and frequency-domain coding modes, having low-delay and an increased coding efficiency in terms of iterate/distortion ratio, is obtained by configuring the audio encoder such that same operates in different operating modes such that if the active operative mode is a first operating mode, a mode dependent set of available frame coding modes is disjoined to a first subset of time-domain coding modes, and overlaps with a second subset of frequency-domain coding modes, whereas if the active operating mode is a second operating mode, the mode dependent set of available frame coding modes overlaps with both subsets, i.e. the subset of time-domain coding modes as well as the subset of frequency-domain coding modes.
    Type: Application
    Filed: August 13, 2013
    Publication date: December 12, 2013
    Applicant: Fraunhofer-Gesellschaft Zur Forderung der Angewandten Forschung E.V.
    Inventors: Ralf Geiger, Konstantin Schmidt, Bernhard Grill, Manfred Lutzky, Michael Werner, Marc Gayer, Johannes Hilpert, Maria Luis Valero, Wolfgang Jaegers
  • Publication number: 20130272369
    Abstract: An encoder for predictively encoding a signal having a sequence of signal values has a predictor for performing an adaptive prediction in dependence on the signal, and in dependence on one or more weighting values, to obtain predicted signal values, wherein the predictor is configured to reset the weighting values at times which are dependent on the signal, and wherein the predictor is configured to adapt the weighting values to the signal between subsequent resets.
    Type: Application
    Filed: June 13, 2013
    Publication date: October 17, 2013
    Inventors: Manfred LUTZKY, Gerald SCHULLER, Michael SCHNABEL, Michael WERNER
  • Patent number: 8520843
    Abstract: In an inventive method for encrypting a discrete signal consisting of successive samples the successive samples are subdivided into successive time blocks, and the successive time blocks are then encoded into encoded data blocks having a predetermined order. Subsequently, the predetermined order of the encoded data blocks is altered in accordance with a predetermined interchange specification. The underlying findings are that a very high level of security of the encryption may be achieved by introducing temporal discontinuity, and that the occurrence of errors in unauthorized processing of signals encoded in such a manner maybe prevented, and the compatibility with standard codings may be ensured by performing the alteration of the chronological order in accordance with a coding of the discrete signal, i.e. with regard to encoded data blocks into which an encoder encodes the discrete signal.
    Type: Grant
    Filed: August 2, 2002
    Date of Patent: August 27, 2013
    Assignee: Fraunhofer-Gesellscaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Sascha Disch, Johannes Hilpert, Manfred Lutzky, Marc Gayer, Reinfried Bartholomaeus
  • Patent number: 8452605
    Abstract: An embodiment of an apparatus for generating audio subband values in audio subband channels has an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function having a sequence of window coefficients to obtain windowed samples. The analysis window function has a first group of window coefficients and a second group of window coefficients. The first group of window coefficients is used for windowing later time-domain samples and the second group of window coefficients is used for windowing an earlier time-domain samples. The apparatus further has a calculator for calculating the audio subband values using the windowed samples.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: May 28, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Markus Schnell, Manfred Lutzky, Markus Lohwasser, Markus Schmidt, Marc Gayer, Michael Mellar, Bernd Edler, Markus Multrus, Gerald Schuller, Ralf Geiger, Bernhard Grill
  • Patent number: 8438015
    Abstract: An embodiment of an apparatus for generating audio subband values in audio subband channels includes an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function including a sequence of window coefficients to obtain windowed samples. The analysis window function includes a first number of window coefficients derived from a larger window function including a sequence of a larger second number of window coefficients, wherein the window coefficients of the window function are derived by an interpolation of window coefficients of the larger window function. The apparatus further includes a calculator for calculating the audio subband values using the windowed samples.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: May 7, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Manfred Lutzky, Markus Lohwasser, Markus Schmidt, Marc Gayer, Michael Mellar, Bernd Edler, Markus Multrus, Gerald Schuller, Ralf Geiger, Bernhard Grill
  • Patent number: 8417532
    Abstract: The transient problem may be sufficiently addressed, and for this purpose, a further delay on the side of the decoding may be reduced if a new SBR frame class is used wherein the frame boundaries are not shifted, i.e. the grid boundaries are still synchronized with the frame boundaries, but wherein a transient position indication is additionally used as a syntax element so as to be used, on the encoder and/or decoder sides, within the frames of these new frame class for determining the grid boundaries within these frames.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: April 9, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung E.V.
    Inventors: Markus Schnell, Michael Schuldt, Manfred Lutzky, Manuel Jander
  • Patent number: 8385366
    Abstract: In the context of packet-oriented data transmission via a network, an apparatus for transmitting a sequence of data packets checks whether a packet is missing or faulty. In this case, a replacement packet is provided which is a valid packet with regard to a packet syntax which, however, has a predetermined contents characteristic. On the decoder side, a basic decoder recognizes the packet as a valid packet and decodes same, whereas an extension decoder can enable an error concealing measure on the basis of an indication in the replacement packet to the fact that this is a replacement packet, in order to provide a higher-quality audio reproduction.
    Type: Grant
    Filed: February 22, 2008
    Date of Patent: February 26, 2013
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Ralph Sperschneider, Manfred Lutzky, Marc Gayer, Markus Lohwasser, Markus Schnell, Michael Schuldt
  • Patent number: 8290783
    Abstract: An apparatus according to an embodiment of the present invention for mixing a first frame of a first input data stream and a second frame of a second input data stream has a processing unit adapted to generate an output frame, wherein the output frame has output spectral data describing a lower part of an output spectrum up to an output cross-over frequency, and wherein the output frame further has output SBR-data describing a higher part of the output spectrum above the output cross-over frequency by way of energy-related values in an output time/frequency grid resolution.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: October 16, 2012
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Manfred Lutzky, Markus Multrus
  • Patent number: 8126721
    Abstract: The transient problem may be sufficiently addressed, and for this purpose, a further delay on the side of the decoding may be reduced if a new SBR frame class is used wherein the frame boundaries are not shifted, i.e. the grid boundaries are still synchronized with the frame boundaries, but wherein a transient position indication is additionally used as a syntax element so as to be used, on the encoder and/or decoder sides, within the frames of these new frame class for determining the grid boundaries within these frames.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: February 28, 2012
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Michael Schuldt, Manfred Lutzky, Manuel Jander
  • Patent number: 8116486
    Abstract: An apparatus for mixing a plurality of input data streams is described, which has a processing unit adapted to compare the frames of the plurality of input data streams, and determine, based on the comparison, for a spectral component of an output frame of an output data stream, exactly one input data stream of the plurality of input data streams. The output data stream is generated by copying at least a part of an information of a corresponding spectral component of the frame of the determined data stream. Further or alternatively, the control values of the frames of the first and second input data streams are compared, and, if so, the control value is adopted.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: February 14, 2012
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Manfred Lutzky, Markus Multrus
  • Publication number: 20110272884
    Abstract: A basic idea of the present application is that in case of determining a position of the object on the surface, it is possible to also use transport mechanisms for the transport of the object on the surface which leads to less reproducible transport movements as the regulation may be executed directly on the basis of the observed movement as compared to the desired movement. Embodiments using compressed air, magnetism and/or bending waves are described.
    Type: Application
    Filed: May 9, 2011
    Publication date: November 10, 2011
    Applicant: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Stefan KRAEGELOH, Harald POPP, Josef BERNHARD, Harald FUCHS, Marc GAYER, Manfred LUTZKY, Thomas SPORER, Sandra BRIX
  • Patent number: 8041578
    Abstract: The transient problem may be sufficiently addressed, and for this purpose, a further delay on the side of the decoding may be reduced if a new SBR frame class is used wherein the frame boundaries are not shifted, i.e. the grid boundaries are still synchronized with the frame boundaries, but wherein a transient position indication is additionally used as a syntax element so as to be used, on the encoder and/or decoder sides, within the frames of these new frame class for determining the grid boundaries within these frames.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: October 18, 2011
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.
    Inventors: Markus Schnell, Michael Schuldt, Manfred Lutzky, Manuel Jander
  • Patent number: 8037114
    Abstract: In the transition into the logarithmic range, not the entire bit width of the result linearly dependent upon the square of the value must be considered. Rather, it is possible to scale the result of a value with x bits such that a representation with less than x bits of the result is sufficient to receive the logarithmic representation based thereon. The effect of the scaling factor on the resulting logarithmic representation may be compensated for by adding or subtracting a correction value received by the logarithm function applied to the scaling factor to or from the scaled logarithmic representation without any loss of dynamics. This way, a method and an apparatus for creating a representation of a result linearly dependent upon a square of a value are provided so that the calculation is simple and/or possible with little hardware expenditure.
    Type: Grant
    Filed: June 13, 2007
    Date of Patent: October 11, 2011
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Marc Gayer, Manfred Lutzky, Markus Lohwasser, Sascha Disch, Johannes Hilpert, Stefan Geyersberger, Bernhard Grill
  • Patent number: 7853007
    Abstract: A conference terminal for a digital voice conference system comprises a first sound transducer means, which is implemented to generate a microphone signal from an acoustic signal, a second sound transducer means, which is implemented to generate an acoustic signal from a loudspeaker signal, a connecting means, which is implemented to enable a connection between conference terminal and a conference central unit, to receive a composite conference signal from the conference central unit, and a means for echo suppression, which is implemented to combine the microphone signal or a signal derived therefrom in a noise suppression means with a composite conference signal in a listening operation of the conference terminal, such that a loudspeaker signal results, in which the acoustic signal, on which the microphone signal is based, is reduced.
    Type: Grant
    Filed: January 11, 2007
    Date of Patent: December 14, 2010
    Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.
    Inventors: Martin Tittel, Manfred Lutzky, Juergen Hupp
  • Patent number: 7769477
    Abstract: The manipulation of audio data can be simplified, such as, for example, with regard to the combination of individual audio data streams to multi-channel audio data streams or the general manipulation of an audio data stream, by modifying a data block in an audio data stream divided into data blocks with determination block and data block audio data, such as by completing or adding or replacing part of the same, so that the same includes a length indicator indicating an amount or length of data, respectively, of the data block audio data or an amount or length of data, respectively, of the data block to obtain a second audio data stream with modified data blocks. Alternatively, an audio data stream with pointers in determination blocks, which point to determination block audio data associated to this determination blocks, but distributed among different data blocks, is converted into an audio data stream, wherein the determination block audio data are combined to contiguous determination block audio data.
    Type: Grant
    Filed: January 20, 2006
    Date of Patent: August 3, 2010
    Assignee: Fraunhofer—Gesellschaft zur Forderung der Angewandten Forschung E.V.
    Inventors: Stefan Geyersberger, Harald Gernhardt, Bernhard Grill, Michael Haertl, Johann Hilpert, Manfred Lutzky, Martin Weishart, Harald Popp
  • Patent number: 7716042
    Abstract: Coding an audio signal of a sequence of audio values into a coded signal includes determining first and second listening thresholds for first and second blocks of audio values of the sequence of audio values; calculating versions of first second parameterizations of the parameterizable filter such that the transfer function thereof roughly corresponds to the inverse of the magnitude of the first and second listening thresholds, respectively; filtering a predetermined block of audio values of the sequence of audio values with the parameterizable filter using a predetermined parameterization which depends on the version of the second parameterization to obtain a block of filtered audio values corresponding to the predetermined block which is quantized; forming a difference between the versions of the first and second parameterizations; integrating information on, inter alias, the difference into the coded signal.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: May 11, 2010
    Inventors: Gerald Schuller, Stefan Wabnik, Jens Hirschfeld, Manfred Lutzky
  • Publication number: 20100023322
    Abstract: An embodiment of an apparatus for generating audio subband values in audio subband channels includes an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function including a sequence of window coefficients to obtain windowed samples. The analysis window function includes a first number of window coefficients derived from a larger window function including a sequence of a larger second number of window coefficients, wherein the window coefficients of the window function are derived by an interpolation of window coefficients of the larger window function. The apparatus further includes a calculator for calculating the audio subband values using the windowed samples.
    Type: Application
    Filed: October 23, 2007
    Publication date: January 28, 2010
    Inventors: Markus Schnell, Manfred Lutzky, Markus Lohwasser, Markus Schmidt, Marc Gayer, Michael Mellar, Bernd Edler, Markus Multrus, Gerald Schuller, Ralf Geiger, Bernhard Grill
  • Publication number: 20090319283
    Abstract: An embodiment of an apparatus for generating audio subband values in audio subband channels has an analysis windower for windowing a frame of time-domain audio input samples being in a time sequence extending from an early sample to a later sample using an analysis window function having a sequence of window coefficients to obtain windowed samples. The analysis window function has a first group of window coefficients and a second group of window coefficients. The first group of window coefficients is used for windowing later time-domain samples and the second group of window coefficients is used for windowing an earlier time-domain samples. The apparatus further has a calculator for calculating the audio subband values using the windowed samples.
    Type: Application
    Filed: October 23, 2007
    Publication date: December 24, 2009
    Inventors: Markus Schnell, Manfred Lutzky, Markus Lohwasser, Markus Schmidt, Marc Gayer, Michael Mellar, Bernd Edler, Markus Multrus, Gerald Schuller, Ralf Geiger, Bernhard Grill
  • Publication number: 20090254783
    Abstract: A very coarse quantization exceeding the measure determined by the masking threshold without or only very little quality losses is enabled by quantizing not immediately the prefiltered signal, but a prediction error obtained by forward-adaptive prediction of the prefiltered signal. Due to the forward adaptivity, the quantizing error has no negative effect on the prediction on the decoder side.
    Type: Application
    Filed: February 28, 2007
    Publication date: October 8, 2009
    Inventors: Jens Hirschfeld, Gerald Schuller, Manfred Lutzky, Ulrich Kraemer, Stefan Wabnik
  • Publication number: 20090226010
    Abstract: An apparatus for mixing a plurality of input data streams is described, which has a processing unit adapted to compare the frames of the plurality of input data streams, and determine, based on the comparison, for a spectral component of an output frame of an output data stream, exactly one input data stream of the plurality of input data streams. The output data stream is generated by copying at least a part of an information of a corresponding spectral component of the frame of the determined data stream. Further or alternatively, the control values of the frames of the first and second input data streams are compared, and, if so, the control value is adopted.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 10, 2009
    Inventors: Markus Schnell, Manfred Lutzky, Markus Multrus