Patents by Inventor Niels Thorwirth
Niels Thorwirth 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: 9847979Abstract: Managing access to digital content within a particular domain, including: receiving the digital content at a first client device; decrypting the received digital content at the first client device using a first key; transcoding the digital content to another format; re-encrypting the transcoded content using a second key, wherein the second key is obtained by one of: (1) directly from a server; or (2) indirectly by deriving it locally based on information received from the server; and transmitting the re-encrypted content to a second client device, wherein the second client device obtains the second key and decrypts the re-encrypted content at the second client device.Type: GrantFiled: October 8, 2013Date of Patent: December 19, 2017Assignee: VERIMATRIX, INC.Inventors: Petr Peterka, Niels Thorwirth, Kamil Saykali, Ali Hodjat, Steve Christian, Nikolai Keychenko, Tom Pollard
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Patent number: 9271016Abstract: Reformatting a media stream to include auxiliary data, the method including: receiving the auxiliary data to be inserted into the media stream; determining the amount of data in the auxiliary data; identifying media data in the media stream to be reduced in size; reformatting the media stream to reduce the amount of data in the media data such that the amount of data removed from the media data is at least equal to the amount of data in the auxiliary data while providing minimal impact to the quality of the media data; and adding the auxiliary data to the media stream which maintains a consistent size.Type: GrantFiled: March 14, 2014Date of Patent: February 23, 2016Assignee: Verimatrix, Inc.Inventors: Alexander Solonsky, Andreas Eleftheirou, Niels Thorwirth
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Patent number: 9253165Abstract: Systems and methods for secure content distribution to playback devices connected to a local network via a residential gateway using secure links are disclosed. One embodiment of the invention includes a content server, a rights management server, a residential gateway configured to communicate with the content server and the rights management server via a network, and a playback device configured to communicate with the residential gateway via a local network.Type: GrantFiled: July 20, 2011Date of Patent: February 2, 2016Assignee: Verimatrix, Inc.Inventors: Petr Peterka, Niels Thorwirth
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Publication number: 20140281489Abstract: Managing access to digital content within a particular domain, including: receiving the digital content at a first client device; decrypting the received digital content at the first client device using a first key; transcoding the digital content to another format; re-encrypting the transcoded content using a second key, wherein the second key is obtained by one of: (1) directly from a server; or (2) indirectly by deriving it locally based on information received from the server; and transmitting the re-encrypted content to a second client device, wherein the second client device obtains the second key and decrypts the re-encrypted content at the second client device.Type: ApplicationFiled: October 8, 2013Publication date: September 18, 2014Applicant: Verimatrix, Inc.Inventors: Petr Peterka, Niels Thorwirth, Kamil Saykali, Ali Hodjat, Steve Christian, Nikolai Keychenko, Tom Pollard
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Publication number: 20140270705Abstract: Reformatting a media stream to include auxiliary data, the method including: receiving the auxiliary data to be inserted into the media stream; determining the amount of data in the auxiliary data; identifying media data in the media stream to be reduced in size; reformatting the media stream to reduce the amount of data in the media data such that the amount of data removed from the media data is at least equal to the amount of data in the auxiliary data while providing minimal impact to the quality of the media data; and adding the auxiliary data to the media stream which maintains a consistent size.Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Applicant: Verimatrix, Inc.Inventors: Alexander Solonsky, Andreas Eleftheirou, Niels Thorwirth
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Publication number: 20130179680Abstract: Systems and methods for secure content distribution to playback devices connected to a local network via a residential gateway using secure links are disclosed. One embodiment of the invention includes a content server, a rights management server, a residential gateway configured to communicate with the content server and the rights management server via a network, and a playback device configured to communicate with the residential gateway via a local network.Type: ApplicationFiled: July 20, 2011Publication date: July 11, 2013Applicant: Verimatrix, Inc.Inventors: Petr Peterka, Niels Thorwirth
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Patent number: 8189862Abstract: A technique for determining authenticity of analog forms such as packaging or documents determines whether the analog form has been made directly from a digital representation or by photocopying or scanning an analog form. The technique makes the determination by comparing an original digital representation of a portion of the analog form having an authentication pattern with a digital recording of the portion from the analog form and measuring differences in features that are affected by the operations of photocopying or scanning. The authentication pattern may depend on a key or on other information displayed on the analog form. Another pattern may be displayed on the analog form to locate the pattern.Type: GrantFiled: June 7, 2011Date of Patent: May 29, 2012Assignee: Schreiner Group GmbH & Co. KGInventors: Jian Zhao, Justin Picard, Niels Thorwirth
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Publication number: 20120063647Abstract: A technique for determining authenticity of analog forms such as packaging or documents determines whether the analog form has been made directly from a digital representation or by photocopying or scanning an analog form. The technique makes the determination by comparing an original digital representation of a portion of the analog form having an authentication pattern with a digital recording of the portion from the analog form and measuring differences in features that are affected by the operations of photocopying or scanning. The authentication pattern may depend on a key or on other information displayed on the analog form. Another pattern may be displayed on the analog form to locate the pattern.Type: ApplicationFiled: June 7, 2011Publication date: March 15, 2012Applicant: Schreiner Group GmbH & Co. KGInventors: Jian Zhao, Justin Picard, Niels Thorwirth
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Patent number: 7991198Abstract: Techniques for determining authenticity of analog forms such as packaging or documents (117). One of the techniques determines whether the analog form has been made directly from a digital representation (903) or by photocopying or scanning an analog form. The technique makes the determination by comparing (911) an original digital representation of a portion of the analog form with a digital recording (203) of the portion from the analog form and measuring differences in features that are affected by the operations of photocopying or scanning. The original digital representation (105) and the analog form may have a “noisy”, i.e., random or pseudo random pattern. Such noisy patterns may further be used for other authentication purposes, such as determining whether the portion of the analog form that has the noisy pattern has been altered and to carry hidden messages. The noisy pattern may carry a logo or may be. part or all of a barcode.Type: GrantFiled: August 27, 2010Date of Patent: August 2, 2011Assignee: Schreiner Group GmbH & Co. KGInventors: Jian Zhao, Justin Picard, Niels Thorwirth
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Publication number: 20110122452Abstract: Techniques for determining authenticity of analog forms such as packaging or documents (117). One of the techniques determines whether the analog form has been made directly from a digital representation (903) or by photocopying or scanning an analog form. The technique makes the determination by comparing (911) an original digital representation of a portion of the analog form with a digital recording (203) of the portion from the analog form and measuring differences in features that are affected by the operations of photocopying or scanning. The original digital representation (105) and the analog form may have a “noisy”, i.e., random or pseudo random pattern. Such noisy patterns may further be used for other authentication purposes, such as determining whether the portion of the analog form that has the noisy pattern has been altered and to carry hidden messages. The noisy pattern may carry a logo or may be. part or all of a barcode.Type: ApplicationFiled: August 27, 2010Publication date: May 26, 2011Applicant: Schreiner Group GmbH & Co. KGInventors: Jian Zhao, Justin Picard, Niels Thorwirth
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Patent number: 7853040Abstract: Systems and methods are described for repeatedly embedding information in media that is recoverable by emphasizing subtle variations between the media. In many embodiments perceptual models are used to identify portions of the media in which the embedded information is unlikely to be apparent to a human observer. One embodiment of the invention includes rendering the information in the form of a media, selecting a plurality of portions of media from the carrier media, combining at least part of the rendered media with each of the selected portions of the carrier media to form modified media portions, where the modifications to the modified media portions are not apparent to a human observer and creating a modified carrier medium using the modified media portions.Type: GrantFiled: September 29, 2008Date of Patent: December 14, 2010Assignee: Verimatrix, Inc.Inventor: Niels Thorwirth
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Patent number: 7809152Abstract: Techniques for determining authenticity of analog forms such as packaging or documents (117). One of the techniques determines whether the analog form has been made directly from a digital representation (903) or by photocopying or scanning an analog form. The technique makes the determination by comparing (911) an original digital representation of a portion of the analog form with a digital recording (203) of the portion from the analog form and measuring differences in features that are affected by the operations of photocopying or scanning. The original digital representation (105) and the analog form may have a “noisy”, i.e., random or pseudo random pattern. Such noisy patterns may further be used for other authentication purposes, such as determining whether the portion of the analog form that has the noisy pattern has been altered and to carry hidden messages. The noisy pattern may carry a logo or may be part or all of a barcode.Type: GrantFiled: May 14, 2003Date of Patent: October 5, 2010Assignee: Schreiner Group GmbH & Co. KGInventors: Jian Zhao, Justin Picard, Niels Thorwirth
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Patent number: 7738677Abstract: Systems and methods are described for rendering information to be embedded in media content at a first location and for embedding the rendered information into the media content at a second location. In many embodiments, the embedding process is less processor intensive than the rendering process and can be performed on a consumer electronics device such as a set top box, using existing processing mechanisms. One embodiment of the invention includes rendering the information into an image at a first location and embedding the image in the media at a second location in order to achieve efficient marking of the media content.Type: GrantFiled: May 16, 2007Date of Patent: June 15, 2010Assignee: Verimatrix, Inc.Inventor: Niels Thorwirth
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Patent number: 7630511Abstract: Techniques for watermarking sequences of digital representations and detecting the watermarks in the digital representations. One of the techniques is used when the message that is contained in a watermark belonging to a digital representation that is derived from an original watermarked digital representation cannot be decoded. The technique obtains information about the watermark by comparing the watermark vector for the watermark that cannot be decoded with a replica of the watermark vector from the original watermarked digital representation. The replica is made using the message. Depending on the degree of similarity, the watermark's presence and some of its characteristics may be determined. Another technique improves the robustness of watermarks that are used for authentication by employing a short (eve single-bit) watermark vector to make the watermark and using the message needed for the authentication to determine where the watermark is located in the digital representation.Type: GrantFiled: August 23, 2004Date of Patent: December 8, 2009Assignee: Thomson LicensingInventors: Jian Zhao, Justin Picard, Niels Thorwirth
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Patent number: 7555650Abstract: The computational cost of embedding information in a digital representation is reduced by making a set of at least two copies of the digital representation and altering subdivisions of the copies so that corresponding subdivisions in the copies are distinguishable from each other. The subdivisions may be arbitrary or may be functional subdivisions of the digital representation. The subdivisions may be distinguishable by features such as watermarks that do not affect the way in which the digital representation is normally used. The marked copy in which the information is embedded is then made by selecting a given subdivision in the marked copy from one of the set of copies. Selection may be done using a selection string that has an element for each subdivision. The value of the element indicates which of the set of digital representations the subdivision corresponding to the element is to be selected from.Type: GrantFiled: March 17, 2003Date of Patent: June 30, 2009Assignee: Thomson LicensingInventors: Jian Zhao, Niels Thorwirth
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Publication number: 20090087021Abstract: Systems and methods are described for repeatedly embedding information in media that is recoverable by emphasizing subtle variations between the media. In many embodiments perceptual models are used to identify portions of the media in which the embedded information is unlikely to be apparent to a human observer. One embodiment of the invention includes rendering the information in the form of a media, selecting a plurality of portions of media from the carrier media, combining at least part of the rendered media with each of the selected portions of the carrier media to form modified media portions, where the modifications to the modified media portions are not apparent to a human observer and creating a modified carrier medium using the modified media portions.Type: ApplicationFiled: September 29, 2008Publication date: April 2, 2009Inventor: Niels Thorwirth
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Patent number: 7430302Abstract: Systems and methods are described for repeatedly embedding information in media that is recoverable by emphasizing subtle variations between the media. In many embodiments perceptual models are used to identify portions of the media in which the embedded information is unlikely to be apparent to a human observer. One embodiment of the invention includes rendering the information in the form of a media, selecting a plurality of portions of media from the carrier media, combining at least part of the rendered media with each of the selected portions of the carrier media to form modified media portions, where the modifications to the modified media portions are not apparent to a human observer and creating a modified carrier medium using the modified media portions.Type: GrantFiled: July 19, 2006Date of Patent: September 30, 2008Assignee: Verimatrix, Inc.Inventor: Niels Thorwirth
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Publication number: 20070291979Abstract: Systems and methods are described for rendering information to be embedded in media content at a first location and for embedding the rendered information into the media content at a second location. In many embodiments, the embedding process is less processor intensive than the rendering process and can be performed on a consumer electronics device such as a set top box, using existing processing mechanisms. One embodiment of the invention includes rendering the information into an image at a first location and embedding the image in the media at a second location in order to achieve efficient marking of the media content.Type: ApplicationFiled: May 16, 2007Publication date: December 20, 2007Inventor: Niels Thorwirth
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Publication number: 20070019836Abstract: Systems and methods are described for repeatedly embedding information in media that is recoverable by emphasizing subtle variations between the media. In many embodiments perceptual models are used to identify portions of the media in which the embedded information is unlikely to be apparent to a human observer. One embodiment of the invention includes rendering the information in the form of a media, selecting a plurality of portions of media from the carrier media, combining at least part of the rendered media with each of the selected portions of the carrier media to form modified media portions, where the modifications to the modified media portions are not apparent to a human observer and creating a modified carrier medium using the modified media portions.Type: ApplicationFiled: July 19, 2006Publication date: January 25, 2007Inventor: Niels Thorwirth
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Publication number: 20060109515Abstract: Techniques for determining authenticity of analog forms such as packaging or documents (117). One of the techniques determines whether the analog form has been made directly from a digital representation (903) or by photocopying or scanning an analog form. The technique makes the determination by comparing (911) an original digital representation of a portion of the analog form with a digital recording (203) of the portion from the analog form and measuring differences in features that are affected by the operations of photocopying or scanning. The original digital representation (105) and the analog form may have a “noisy”, i.e., random or pseudo random pattern. Such noisy patterns may further be used for other authentication purposes, such as determining whether the portion of the analog form that has the noisy pattern has been altered and to carry hidden messages. The noisy pattern may carry a logo or may be part or all of a barcode.Type: ApplicationFiled: May 14, 2003Publication date: May 25, 2006Inventors: Jian Zhao, Justin Picard, Niels Thorwirth