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).

  • Patent number: 9847979
    Abstract: 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: Grant
    Filed: October 8, 2013
    Date of Patent: December 19, 2017
    Assignee: VERIMATRIX, INC.
    Inventors: Petr Peterka, Niels Thorwirth, Kamil Saykali, Ali Hodjat, Steve Christian, Nikolai Keychenko, Tom Pollard
  • Patent number: 9271016
    Abstract: 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: Grant
    Filed: March 14, 2014
    Date of Patent: February 23, 2016
    Assignee: Verimatrix, Inc.
    Inventors: Alexander Solonsky, Andreas Eleftheirou, Niels Thorwirth
  • Patent number: 9253165
    Abstract: 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: Grant
    Filed: July 20, 2011
    Date of Patent: February 2, 2016
    Assignee: Verimatrix, Inc.
    Inventors: Petr Peterka, Niels Thorwirth
  • Publication number: 20140281489
    Abstract: 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: Application
    Filed: October 8, 2013
    Publication date: September 18, 2014
    Applicant: Verimatrix, Inc.
    Inventors: Petr Peterka, Niels Thorwirth, Kamil Saykali, Ali Hodjat, Steve Christian, Nikolai Keychenko, Tom Pollard
  • Publication number: 20140270705
    Abstract: 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: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: Verimatrix, Inc.
    Inventors: Alexander Solonsky, Andreas Eleftheirou, Niels Thorwirth
  • Publication number: 20130179680
    Abstract: 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: Application
    Filed: July 20, 2011
    Publication date: July 11, 2013
    Applicant: Verimatrix, Inc.
    Inventors: Petr Peterka, Niels Thorwirth
  • Patent number: 8189862
    Abstract: 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: Grant
    Filed: June 7, 2011
    Date of Patent: May 29, 2012
    Assignee: Schreiner Group GmbH & Co. KG
    Inventors: Jian Zhao, Justin Picard, Niels Thorwirth
  • Publication number: 20120063647
    Abstract: 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: Application
    Filed: June 7, 2011
    Publication date: March 15, 2012
    Applicant: Schreiner Group GmbH & Co. KG
    Inventors: Jian Zhao, Justin Picard, Niels Thorwirth
  • Patent number: 7991198
    Abstract: 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: Grant
    Filed: August 27, 2010
    Date of Patent: August 2, 2011
    Assignee: Schreiner Group GmbH & Co. KG
    Inventors: Jian Zhao, Justin Picard, Niels Thorwirth
  • Publication number: 20110122452
    Abstract: 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: Application
    Filed: August 27, 2010
    Publication date: May 26, 2011
    Applicant: Schreiner Group GmbH & Co. KG
    Inventors: Jian Zhao, Justin Picard, Niels Thorwirth
  • Patent number: 7853040
    Abstract: 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: Grant
    Filed: September 29, 2008
    Date of Patent: December 14, 2010
    Assignee: Verimatrix, Inc.
    Inventor: Niels Thorwirth
  • Patent number: 7809152
    Abstract: 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: Grant
    Filed: May 14, 2003
    Date of Patent: October 5, 2010
    Assignee: Schreiner Group GmbH & Co. KG
    Inventors: Jian Zhao, Justin Picard, Niels Thorwirth
  • Patent number: 7738677
    Abstract: 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: Grant
    Filed: May 16, 2007
    Date of Patent: June 15, 2010
    Assignee: Verimatrix, Inc.
    Inventor: Niels Thorwirth
  • Patent number: 7630511
    Abstract: 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: Grant
    Filed: August 23, 2004
    Date of Patent: December 8, 2009
    Assignee: Thomson Licensing
    Inventors: Jian Zhao, Justin Picard, Niels Thorwirth
  • Patent number: 7555650
    Abstract: 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: Grant
    Filed: March 17, 2003
    Date of Patent: June 30, 2009
    Assignee: Thomson Licensing
    Inventors: Jian Zhao, Niels Thorwirth
  • Publication number: 20090087021
    Abstract: 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: Application
    Filed: September 29, 2008
    Publication date: April 2, 2009
    Inventor: Niels Thorwirth
  • Patent number: 7430302
    Abstract: 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: Grant
    Filed: July 19, 2006
    Date of Patent: September 30, 2008
    Assignee: Verimatrix, Inc.
    Inventor: Niels Thorwirth
  • Publication number: 20070291979
    Abstract: 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: Application
    Filed: May 16, 2007
    Publication date: December 20, 2007
    Inventor: Niels Thorwirth
  • Publication number: 20070019836
    Abstract: 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: Application
    Filed: July 19, 2006
    Publication date: January 25, 2007
    Inventor: Niels Thorwirth
  • Publication number: 20060109515
    Abstract: 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: Application
    Filed: May 14, 2003
    Publication date: May 25, 2006
    Inventors: Jian Zhao, Justin Picard, Niels Thorwirth