Irdeto B.v.

Dmitri Jarnikov

Andrew Augustine Wajs

Jeroen Mathias Doumen

Wim Mooij

John Wimer

Milosh Stolikj

There is described a method of monitoring a peer-to-peer network. The method comprises: (i) monitoring network traffic between a first peer and the peer-to-peer network so as to identify a first subset of peers in the peer-to-peer network; and (ii) preventing the first peer from communicating with at least one peer in the first subset of peers to thereby cause the first peer to communicate with at least one further peer in the peer-to-peer network so as to enable identification of the at least one further peer. In addition, there is described a peer-to-peer network monitor for monitoring a peer-to-peer network, wherein the monitor is operable to monitor network traffic between a first peer and the peer-to-peer network so as to identify a subset of peers in the peer-to-peer network in communication with the first peer, and wherein the monitor is operable to prevent the first peer from communicating with at least one peer in the subset of peers to thereby cause the first peer to communicate with at least one further peer in the peer-to-peer network so as to enable the monitor to identify the at least one further peer. Corresponding computer programs and computer-readable media are also described.

Monitoring a peer-to-peer network

A method of facilitating a device to obtain a version of an item of content. For each section of the item of content, a content distribution system is arranged to provide one or more versions of that section. At least one section includes a plurality of differently watermarked versions of that section. A request for a section of the item of content is received. If the requested section is a section for which the content distribution system is arranged to provide a plurality of differently watermarked versions of that section, a particular version is identified based on an identifier of the device and a response a response containing an indication of the particular version of the requested section is provided to the device. The response is arranged to cause the device to request the particular version of the requested section from a corresponding location on the content distribution system.

Obtaining a version of an item of content

There is described a method for a first software application to access a secured software application on a computing device. The first software application is not configured to interface with the secured software application. The computing device includes an interfacing application configured to interface with the secured software application. The method comprises the first software application interfacing with the interfacing application to thereby cause the interfacing application to access the secured software application. The first software application is configured to interface with the interfacing application. There is also described a method of generating an encrypted version of an image using a library of pre-encrypted blocks of data, the same content encryption key having been used to encrypt each of the pre-encrypted blocks of data. The method comprises forming the encrypted version of the image from an ordered sequence of pre-encrypted blocks of data from the library, wherein each pre-encrypted block of data in the ordered sequence corresponds to a respective sub-image of a plurality of sub-images making up the image. There are also described corresponding computing devices, computer programs and computer-readable media.

Accessing a secured software application

A method for identifying an object within a video sequence, wherein the video sequence comprises a sequence of images, wherein the method comprises, for each of one or more images of the sequence of images: using a first neural network to determine whether or not an object of a predetermined type is depicted within the image; and in response to the first neural network determining that an object of the predetermined type is depicted within the image, using an ensemble of second neural networks to identify the object determined as being depicted within the image.

Identifying an object within content

The invention relates to a computer-implemented method for providing content to a particular recipient device of a plurality of recipient devices. Copies of one or more content elements of the content are generated and one or more of the copies are modified to obtain modified copies of the content elements. The content elements, including the one or more modified copies of the content elements, are stored in a storage. Selection information is transmitted to the particular recipient device in response to a request for providing the content. The selection information prescribes to the recipient device the modified copy to be retrieved by the recipient device for substantially each content element for which a modified copy is available.

Method and system for providing content to a recipient device

Computer-implemented systems, methods, and computer-readable media for selecting a sequence of content parts from polymorphic content of an audiovisual presentation based on at least one profile of a user include receiving content information associated with polymorphic content, receiving profile information of a user, and selecting for rendering, from amongst the alternative content parts, a sequence of content parts from the polymorphic content based on at least a portion of the profile information.

Systems and methods for securing polymorphic content

The invention relates to a method and system for watermarking in a content providing system having multiple parties. A first party system selects a first party watermark by selecting a watermarked copy of at least one first content element of the content elements. A second party system selects a second party watermark by selecting a watermarked copy of at least one second content element, different from the at least one first content element, of the content elements. Watermarked content is delivered to an end user device, the watermarked content containing the watermarked copy for the first content element selected by the first party system and the watermarked copy for the second content element selected by the second party system such that the watermarked content contains the first party watermark and the second party watermark.

Method and system for providing watermarked content to multiple end user devices

The invention relates to a computer-implemented method for providing a data stream comprising a plurality of content elements. At least one of two or more copies of a first content element of the data stream has been watermarked with a different watermark. The method includes watermarking at least one of two or more copies of a second content element with a different watermark. In a rendering order of the data stream, the second content element is at an interval equal to or greater than a watermark interval from the first content element. The watermark interval is set to be sufficiently long so that the output quality of the rendered data stream can either completely recover or at least return to a predetermined acceptable level following the watermarking of the copies of the first content element before watermarking the copies of the next content element.

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Hoofddorp, Netherlands

Dmitri Jarnikov