Patents by Inventor Tobias Friedrich
Tobias Friedrich 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).
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Patent number: 10424305Abstract: An error-concealing audio decoding method comprises: receiving a packet comprising a set of MDCT coefficients encoding a frame of time-domain samples of an audio signal; identifying the received packet as erroneous; generating estimated MDCT coefficients to replace the set of MDCT coefficients of the erroneous packet, based on corresponding MDCT coefficients associated with a received packet directly preceding the erroneous packet; assigning signs of a first subset of MDCT coefficients of the estimated MDCT coefficients, wherein the first subset comprises such MDCT coefficients that are associated with tonal-like spectral bins, to coincide with signs of corresponding MDCT coefficients of said preceding packet; randomly assigning signs of a second subset of MDCT coefficients of the estimated MDCT coefficients, wherein the second subset comprises MDCT coefficients associated with noise-like spectral bins; replacing the erroneous packet by a concealment packet containing the estimated MDCT coefficients and the sType: GrantFiled: December 8, 2015Date of Patent: September 24, 2019Assignee: Dolby International ABInventors: Arijit Biswas, Tobias Friedrich, Klaus Peichl
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Patent number: 10360919Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: GrantFiled: July 11, 2017Date of Patent: July 23, 2019Assignee: Dolby International ABInventors: Tobias Friedrich, Alexander Mueller, Karsten Linzmeier, Claus-Christian Spenger, Tobias Wagenblass
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Patent number: 10345263Abstract: A filter bleeding measurement arrangement for the pressure-neutral determination of the fuel vapor emissions of a fuel vapor filter includes a flame ionization detector with a gas inlet and a gas outlet, and a measurement adapter including a measurement connection for connection of the fuel vapor filter, a separate detector connection for connection of the flame ionization detector, and an air inlet fluidically connected to an external atmosphere.Type: GrantFiled: May 18, 2017Date of Patent: July 9, 2019Assignee: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFTInventors: Andreas Menke, Tobias Friedrich, Stefan Heinzel
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Patent number: 10335731Abstract: A filter device for a motor vehicle includes a housing having a receiving space with a first chamber having an adsorption medium and a second chamber having a further adsorption medium, wherein the first chamber and the second chamber are designed such that flow can pass through them in series from a first inflow opening of the filter device to an outflow opening of the filter device via the receiving space. The filter device further includes a partition between the first chamber and the second chamber for a series flow through the first chamber and the second chamber; a flow transfer chamber for flow through the receiving space, the flow transfer chamber being designed to connect the first chamber and the second chamber such that flow can pass through; and a barrier formed in the receiving space for diverting the loading flow and/or the purging flow.Type: GrantFiled: April 12, 2017Date of Patent: July 2, 2019Assignee: DR. ING. H.C. F. PORSCHE AKTIENGESELLSCHAFTInventors: Andreas Menke, Ulrich Essig, Tobias Friedrich
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Patent number: 9990935Abstract: The present document relates to the design of anti-aliasing and/or anti-imaging filters for resamplers using rational resampling factors. In particular, the present document relates to a method for implementing such anti-aliasing and/or anti-imaging filters with reduced computational complexity. In addition, the present document relates to further aspects of an audio encoding and decoding system, such as the phase relation between the channels of a multi-channel audio signal and/or the structure of the bitstream of an encoded audio signal.Type: GrantFiled: September 10, 2014Date of Patent: June 5, 2018Assignees: Dolby Laboratories Licensing Corporation, Dolby International ABInventors: Alexander Groeschel, Jens Popp, Martin Wolters, Jeffrey Riedmiller, Michael Ward, Karl Jonas Roeden, Holger Hoerich, Karsten Linzmeier, Tobias Friedrich
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Publication number: 20180089360Abstract: A system is provided for programming workpiece feature inspection operations for a coordinate measuring machine. The system includes a computer-aided design (CAD) file processing portion, a geometric relationship analyzer, an inspection motion path generation portion, and a user interface including an editable plan representation of a current workpiece feature inspection plan, a workpiece inspection program simulation portion configured to display a 3D view including geometric features and inspection operation representations, and a context sensitive menu portion. The context sensitive menu portion displays a context sensitive relational command menu that indicates a valid set of relational commands including relational feature or relational measurement commands operable to define a corresponding constructed feature or corresponding relational measurement operation to be included in the current workpiece feature inspection plan.Type: ApplicationFiled: September 27, 2016Publication date: March 29, 2018Inventors: Frank Uwe Madsen, Samuel Wu, Eric Yeh-Wei Tseo, Tobias Friedrich
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Publication number: 20170372707Abstract: An error-concealing audio decoding method comprises: receiving a packet comprising a set of MDCT coefficients encoding a frame of time-domain samples of an audio signal; identifying the received packet as erroneous; generating estimated MDCT coefficients to replace the set of MDCT coefficients of the erroneous packet, based on corresponding MDCT coefficients associated with a received packet directly preceding the erroneous packet; assigning signs of a first subset of MDCT coefficients of the estimated MDCT coefficients, wherein the first subset comprises such MDCT coefficients that are associated with tonal-like spectral bins, to coincide with signs of corresponding MDCT coefficients of said preceding packet; randomly assigning signs of a second subset of MDCT coefficients of the estimated MDCT coefficients, wherein the second subset comprises MDCT coefficients associated with noise-like spectral bins; replacing the erroneous packet by a concealment packet containing the estimated MDCT coefficients and the sType: ApplicationFiled: December 8, 2015Publication date: December 28, 2017Applicant: DOLBY INTERNATIONAL ABInventors: Arijit BISWAS, Tobias FRIEDRICH, Klaus PEICHL
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Publication number: 20170336359Abstract: A filter bleeding measurement arrangement for the pressure-neutral determination of the fuel vapor emissions of a fuel vapor filter includes a flame ionization detector with a gas inlet and a gas outlet, and a measurement adapter including a measurement connection for connection of the fuel vapor filter, a separate detector connection for connection of the flame ionization detector, and an air inlet fluidically connected to an external atmosphere.Type: ApplicationFiled: May 18, 2017Publication date: November 23, 2017Inventors: Andreas Menke, Tobias Friedrich, Stefan Heinzel
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Publication number: 20170309280Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system configured to generate a bitstream indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system comprises a downmix processing unit configured to generate the downmix signal from a multi-channel input signal; wherein the downmix signal comprises m channels and wherein the multi-channel input signal comprises n channels; n, m being integers with m<n. Furthermore, the system comprises a parameter processing unit configured to determine the spatial metadata from the multi-channel input signal.Type: ApplicationFiled: July 11, 2017Publication date: October 26, 2017Applicant: DOLBY INTERNATIONAL ABInventors: Tobias FRIEDRICH, Alexander MUELLER, Karsten LINZMEIER, Claus-Christian SPENGER, Tobias WAGENBLASS
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Publication number: 20170296962Abstract: A filter device for a motor vehicle includes a housing having a receiving space with a first chamber having an adsorption medium and a second chamber having a further adsorption medium, wherein the first chamber and the second chamber are designed such that flow can pass through them in series from a first inflow opening of the filter device to an outflow opening of the filter device via the receiving space. The filter device further includes a partition between the first chamber and the second chamber for a series flow through the first chamber and the second chamber; a flow transfer chamber for flow through the receiving space, the flow transfer chamber being designed to connect the first chamber and the second chamber such that flow can pass through; and a barrier formed in the receiving space for diverting the loading flow and/or the purging flow.Type: ApplicationFiled: April 12, 2017Publication date: October 19, 2017Inventors: Andreas Menke, Ulrich Essig, Tobias Friedrich
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Patent number: 9715880Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system (500) configured to generate a bitstream (564) indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system (500) comprises a downmix processing unit (510) configured to generate the downmix signal from a multi-channel input signal (561); wherein the downmix signal comprises m channels and wherein the multi-channel input signal (561) comprises n channels; n, m being integers with m<n. Furthermore, the system (500) comprises a parameter processing unit (520) configured to determine the spatial metadata from the multi-channel input signal (561).Type: GrantFiled: February 21, 2014Date of Patent: July 25, 2017Assignee: Dolby International ABInventors: Tobias Friedrich, Alexander Mueller, Karsten Linzmeier, Claus-Christian Spenger, Tobias R. Wagenblass
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Patent number: 9530424Abstract: An encoder (250) comprises a core encoder (252) for encoding a low frequency component of the audio signal at the signal sampling rate (fs_in) and a spectral band replication-referred to as SBR-encoding unit (153, 254) for determining a plurality of SBR parameters. A plurality of the SBR parameters is determined such that a high frequency component of the audio signal can be approximated based on the low frequency component of the audio signal and the plurality of SBR parameters. A multiplexer (155) is adapted to generate an overall bitstream comprising the core encoded bitstream, the plurality of SBR parameters and an indication of one or more SBR encoder settings applied by the SBR encoder (153, 254); wherein the generated overall bitstream does not indicate that the core encoded bitstream has been determined by encoding the low frequency component at the signal sampling rate (fs_in).Type: GrantFiled: November 12, 2012Date of Patent: December 27, 2016Assignee: Dolby International ABInventors: Holger Hoerich, Tobias Friedrich
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Patent number: 9460723Abstract: A decoding system reconstructs an audio signal based on an input signal representing the audio signal by parametric coding or by n discretely coded channels. Parametric decoding proceeds on the basis of a core signal and mixing parameters controlling a spatial synthesis stage, which is supplied with a downmix signal. A controller is responsible for controlling the components of the decoding system, whether in steady-state parametric mode, steady-state discrete decoding mode and transitions between these. In defective frames of the input signal, which do not allow the mixing parameters to be decoded, the controller is configured to perform various error handling procedures including: parametric decoding using previous values of the mixing parameters; continuing parametric decoding for a limited duration, and/or outputting the core signal without spatial synthesis.Type: GrantFiled: June 14, 2013Date of Patent: October 4, 2016Assignee: Dolby International ABInventors: Tobias Friedrich, Tobias Ro Wagenblass, Karsten Linzmeier, Daniel Homm, Claus-Christian Spenger, Heiko Purnhagen
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Publication number: 20160196831Abstract: The present document relates to the design of anti-aliasing and/or anti-imaging filters for resamplers using rational resampling factors. In particular, the present document relates to a method for implementing such anti-aliasing and/or anti-imaging filters with reduced computational complexity. In addition, the present document relates to further aspects of an audio encoding and decoding system, such as the phase relation between the channels of a multi-channel audio signal and/or the structure of the bitstream of an encoded audio signal.Type: ApplicationFiled: September 10, 2014Publication date: July 7, 2016Applicants: Dolby Laboratories Licensing Corporation, DOLBY INTERNATIONAL ABInventors: Alexander GROESCHEL, Jenns POPP, Martin WOLTERS, Jeffrey RIEDMILLER, Michael WARD, Karl Jonas ROEDEN, Holger HOERICH, Karsten LINZMEIER, Tobias FRIEDRICH
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Publication number: 20160005407Abstract: The present document relates to audio coding systems. In particular, the present document relates to efficient methods and systems for parametric multi-channel audio coding. An audio encoding system (500) configured to generate a bitstream (564) indicative of a downmix signal and spatial metadata for generating a multi-channel upmix signal from the downmix signal is described. The system (500) comprises a downmix processing unit (510) configured to generate the downmix signal from a multi-channel input signal (561); wherein the downmix signal comprises m channels and wherein the multi-channel input signal (561) comprises n channels; n, m being integers with m<n. Furthermore, the system (500) comprises a parameter processing unit (520) configured to determine the spatial metadata from the multi-channel input signal (561).Type: ApplicationFiled: February 21, 2014Publication date: January 7, 2016Applicant: DOLBY INTERNATIONAL ABInventors: Tobias FRIEDRICH, Alexander MUELLER, Karsten LINZMEIER, Claus-Christian SPENGER, Tobias R. WAGENBLASS
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Publication number: 20150142451Abstract: A decoding system reconstructs an audio signal based on an input signal representing the audio signal by parametric coding or by n discretely coded channels. Parametric decoding proceeds on the basis of a core signal and mixing parameters controlling a spatial synthesis stage, which is supplied with a downmix signal. A controller is responsible for controlling the components of the decoding system, whether in steady-state parametric mode, steady-state discrete decoding mode and transitions between these. In defective frames of the input signal, which do not allow the mixing parameters to be decoded, the controller is configured to perform various error handling procedures including: parametric decoding using previous values of the mixing parameters; continuing parametric decoding for a limited duration, and/or outputting the core signal without spatial synthesis.Type: ApplicationFiled: June 14, 2013Publication date: May 21, 2015Applicant: DOLBY LABORATORIES LICENSING CORPORATIONInventors: Tobias Friedrich, Tobias Ro Wagenblass, Karsten Linzmeier, Daniel Homm, Claus-Christian Spenger, Heiko Purnhagen
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Publication number: 20140365231Abstract: An encoder (250) comprises a core encoder (252) for encoding a low frequency component of the audio signal at the signal sampling rate (fs_in) and a spectral band replication-referred to as SBR-encoding unit (153, 254) for determining a plurality of SBR parameters. A plurality of the SBR parameters is determined such that a high frequency component of the audio signal can be approximated based on the low frequency component of the audio signal and the plurality of SBR parameters. A multiplexer (155) is adapted to generate an overall bitstream comprising the core encoded bitstream, the plurality of SBR parameters and an indication of one or more SBR encoder settings applied by the SBR encoder (153, 254); wherein the generated overall bitstream does not indicate that the core encoded bitstream has been determined by encoding the low frequency component at the signal sampling rate (fs_in).Type: ApplicationFiled: November 12, 2012Publication date: December 11, 2014Applicant: DOLBY INTERNATIONAL ABInventors: Holger Hoerich, Tobias Friedrich
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Publication number: 20130318128Abstract: In one embodiment, a computer-implemented method comprises receiving a query in a controller. A data store stores data in a relational database. The database comprises a plurality of fields and a plurality of data elements. Each field is associated with a portion of the data elements. The database is arranged as at least one table, and the query identifies data of an object to be stored in a data set. The method further comprises determining, by the controller, whether the relational database includes a field associated with a class of the object; and if the relational database does not include a field associated with the class of the object, adding a column to the relational database, the added column having a field corresponding to the class. The method further comprises adding the data of the object to the relational database.Type: ApplicationFiled: May 24, 2012Publication date: November 28, 2013Applicant: SAP AGInventors: Tobias Friedrich Zahn, Steffen Geissinger