Patents by Inventor Ralph Kulessa
Ralph Kulessa 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: 8339953Abstract: For monitoring a data transmitter such as a streaming server, which supplies transmitted data in response to a request of a receiver, an examiner examines a data traffic at the input of a receiver or at the output of the receiver, the examiner being configured to ascertain whether the data traffic falls below a minimum threshold. If the minimum threshold is fallen below, a connection activator initiates a new connection between the receiver and the data transmitter. This serves to enable consistent data-transmitter monitoring, even for non-reliable point-to-point connections via the internet.Type: GrantFiled: November 9, 2006Date of Patent: December 25, 2012Assignee: MusicTrace GmbHInventors: Ralph Kulessa, Frank Siebenhaar, Christian Neubauer
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Patent number: 8135955Abstract: The present invention relates to a device for detecting a manipulation of an information signal, having an extractor for extracting an information signal component characteristic for the information signal from the information signal, an encrypter for encrypting the information signal component to obtain an encrypted signal, and a comparator for comparing the encrypted signal to a reference signal, wherein the reference signal is an encrypted representation of a non-manipulated reference signal component of a reference information signal to detect the manipulation.Type: GrantFiled: December 1, 2010Date of Patent: March 13, 2012Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Ralph Kulessa, Jörg Pickel, Stefan Krägeloh, Patrick Aichroth, Frank Siebenhaar, Christian Neubauer, Wolfgang Spinnler
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Publication number: 20110099386Abstract: The present invention relates to a device for detecting a manipulation of an information signal, having an extractor for extracting an information signal component characteristic for the information signal from the information signal, an encryptor for encrypting the information signal component to obtain an encrypted signal, and a comparator for comparing the encrypted signal to a reference signal, wherein the reference signal is an encrypted representation of a non-manipulated reference signal component of a reference information signal to detect the manipulation.Type: ApplicationFiled: December 1, 2010Publication date: April 28, 2011Inventors: Ralph KULESSA, Jörg Pickel, Stefan KRÄGELOH, Patrick Aichroth, Frank Siebenhaar, Christian Neubauer, Wolfgang Spinnler
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Patent number: 7917763Abstract: The present invention relates to a device for detecting a manipulation of an information signal, having an extractor for extracting an information signal component characteristic for the information signal from the information signal, an encryptor for encrypting the information signal component to obtain an encrypted signal, and a comparator for comparing the encrypted signal to a reference signal, wherein the reference signal is an encrypted representation of a non-manipulated reference signal component of a reference information signal to detect the manipulation.Type: GrantFiled: May 10, 2007Date of Patent: March 29, 2011Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Ralph Kulessa, Jörg Pickel, Stefan Krägeloh, Patrick Aichroth, Frank Siebenhaar, Christian Neubauer, Wolfgang Spinnler
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Patent number: 7886152Abstract: For embedding watermark information into an information signal including audio and/or video information, first of all a synchronization sequence with a plurality of synchronization sequence units and a data sequence with a plurality of data sequence units are provided, wherein between the data sequence and the synchronization sequence a time shift is present and wherein a degree of shifting depends on the watermark information. A combination means generates a combination sequence having a plurality of combination sequence units from the synchronization sequence and the data sequence shifted with regard to the synchronization sequence, wherein the combination sequence units are derived from synchronization sequence units and shifted data sequence units. The combination sequence is combined with the information signal in order to embed the watermark information into the information signal.Type: GrantFiled: July 22, 2004Date of Patent: February 8, 2011Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Christian Neubauer, Juergen Herre, Ralph Kulessa, Frank Siebenhaar, Wolfgang Spinnler
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Patent number: 7676336Abstract: According to an inventive scheme for introducing a watermark into an information signal, the information signal is at first transferred from a time representation to a spectral/modulation spectral representation). The information signal is then manipulated in the spectral/modulation spectral representation in dependence on the watermark to be introduced to obtain a modified spectral/modulation spectral representation, and subsequently an information signal provided with a watermark is formed based on the modified spectral/modulation spectral representation. An advantage is that, due to the fact that the watermark is embedded and/or derived in the spectral/modulation spectral representation or range, traditional correlation attacks as are used in watermark methods based on a spread-band modulation cannot succeed easily.Type: GrantFiled: October 30, 2006Date of Patent: March 9, 2010Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Juergen Herre, Ralph Kulessa, Sascha Disch, Karsten Linzmeier, Christian Neubauer, Frank Siebenhaar
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Publication number: 20080267272Abstract: For monitoring a data transmitter such as a streaming server, which supplies transmitted data in response to a request of a receiver, an examiner examines a data traffic at the input of a receiver or at the output of the receiver, the examiner being configured to ascertain whether the data traffic falls below a minimum threshold. If the minimum threshold is fallen below, a connection activator initiates a new connection between the receiver and the data transmitter. This serves to enable consistent data-transmitter monitoring, even for non-reliable point-to-point connections via the internet.Type: ApplicationFiled: November 9, 2006Publication date: October 30, 2008Applicant: MUSICTRACE GMBHInventors: Ralph Kulessa, Frank Siebenhaar, Christian Neubauer
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Patent number: 7346514Abstract: Prior to embedding a watermark in an audio signal, a spectral representation of the audio signal and a spectral representation of the watermark signal are determined. The spectral representation of the watermark signal is then processed on the basis of a psychoacoustic masking threshold of the audio signal. The processed watermark signal is combined with the audio signal to obtain an audio signal bearing a watermark.Type: GrantFiled: May 10, 2002Date of Patent: March 18, 2008Assignee: Fraunhofer-Gesellschaft zur Foerderung der Angewandten Forschung E.V.Inventors: Jürgen Herre, Ralph Kulessa, Christian Neubauer, Frank Siebenhaar
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Publication number: 20080027729Abstract: According to an inventive scheme for introducing a watermark into an information signal, the information signal is at first transferred from a time representation to a spectral/modulation spectral representation). The information signal is then manipulated in the spectral/modulation spectral representation in dependence on the watermark to be introduced to obtain a modified spectral/modulation spectral representation, and subsequently an information signal provided with a watermark is formed based on the modified spectral/modulation spectral representation. An advantage is that, due to the fact that the watermark is embedded and/or derived in the spectral/modulation spectral representation or range, traditional correlation attacks as are used in watermark methods based on a spread-band modulation cannot succeed easily.Type: ApplicationFiled: October 30, 2006Publication date: January 31, 2008Inventors: Juergen Herre, Ralph Kulessa, Sascha Disch, Karsten Linzmeier, Christian Neubauer, Frank Siebenhaar
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Publication number: 20070282924Abstract: A device for checking a data set, wherein the data set has a plurality of partial sets and a partial control value per partial set includes a determiner for determining a control value and comparer. The determiner for determining a control value is formed so as to determine a common control value from the partial control values of the partial sets. The comparer is formed so as to compare the common control value to a comparison value provided to the comparer.Type: ApplicationFiled: April 13, 2007Publication date: December 6, 2007Inventors: Stefan Kraegeloh, Joerg Pickel, Ralph Kulessa, Patrick Aichroth, Kurt Krauss, Jens Hasselbach, Stefan Puchta, Marc Gayer, Harald Popp
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Publication number: 20070277041Abstract: The present invention relates to a device for detecting a manipulation of an information signal, having an extractor for extracting an information signal component characteristic for the information signal from the information signal, an encryptor for encrypting the information signal component to obtain an encrypted signal, and a comparator for comparing the encrypted signal to a reference signal, wherein the reference signal is an encrypted representation of a non-manipulated reference signal component of a reference information signal to detect the manipulation.Type: ApplicationFiled: May 10, 2007Publication date: November 29, 2007Inventors: Ralph KULESSA, Jorg Pickel, Stefan Krageloh, Patrick Aichroth, Frank Siebenhaar, Christian Neubauer, Wolfgang Spinnler
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Publication number: 20050135613Abstract: Devices and methods for generating encrypted data, for playing encrypted data and for re-signing originally signed encrypted data are based on the encrypted data, apart from the encrypted media information, to include the information required for decrypting the data and additionally a signature of who has generated the encrypted data. Thus the origin of the encrypted data can be traced back. In particular, passing on the encrypted data to a limited extent by the producer of the *encrypted data, for example to friends or acquaintances, is allowed, while only a mass reproduction of the encrypted data is considered as pirate copying. The pirate copier can, however, be found out with the help of the signature, wherein the signature is optionally protected by an embedded watermark signature. Because this is a concept wherein, when being used legally, only encrypted data occur, the unauthorized removal of the encryption is a statutory offence.Type: ApplicationFiled: November 10, 2004Publication date: June 23, 2005Inventors: Karlheinz Brandenburg, Christian Neubauer, Ralph Kulessa, Frank Siebenharr, Wolfgang Spinnler
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Publication number: 20050105726Abstract: For embedding watermark information into an information signal including audio and/or video information, first of all a synchronization sequence with a plurality of synchronization sequence units and a data sequence with a plurality of data sequence units are provided, wherein between the data sequence and the synchronization sequence a time shift is present and wherein a degree of shifting depends on the watermark information. A combination means generates a combination sequence having a plurality of combination sequence units from the synchronization sequence and the data sequence shifted with regard to the synchronization sequence, wherein the combination sequence units are derived from synchronization sequence units and shifted data sequence units. The combination sequence is combined with the information signal in order to embed the watermark information into the information signal.Type: ApplicationFiled: February 25, 2003Publication date: May 19, 2005Inventors: Christian Neubauer, Juergen Herre, Ralph Kulessa, Frank Siebenhaar, Wolfgang Spinnler
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Publication number: 20040184369Abstract: Prior to embedding a watermark in an audio signal, a spectral representation of the audio signal and a spectral representation of the watermark signal are determined. The spectral representation of the watermark signal is then processed on the basis of a psychoacoustic masking threshold of the audio signal. The processed watermark signal is combined with the audio signal to obtain an audio signal bearing a watermark.Type: ApplicationFiled: December 18, 2003Publication date: September 23, 2004Inventors: Jurgen Herre, Ralph Kulessa, Christian Neubauer, Frank Siebenhaar