Abstract: A media system includes at least a source media device and a playback media device coupled through a network. The source media device presents media to the network. The media comprises at least one digital content file with a first format. A playback media device plays back digital content files formatted in a second format. A transcoder, also coupled to the network, converts the first format of the digital content file to a second format. In one embodiment, the transcoder comprises a device separate from the source media device and the playback media device. In another embodiment, the transcoder comprises a device integrated with the source media device. The playback device receives the digital content file, formatted in the second format, over the network, and processes the digital content file in the second format to generate processed signals. The processed signals drive the playback device to play the digital content file.

Abstract: Techniques for measuring Peer-To-Peer (P2P) networks are provided. P2P are initially seeded with links to feigned content. As a P2P participant accesses a link metrics are recorded about the P2P network being used by the participant. The metrics are used to form measurements to compare different P2P networks relative to one another.

Abstract: Generally the more effective is the copy protection provided on an optical disc, such as a DVD, the greater is the likelihood that the copy protection will adversely interfere with legitimate uses of the optical disc. It is therefore proposed to include at least one region of subversive data within the content in the data area of an optical disc, and then to prevent access to each such region of subversive data during normal playback of the disc. For a DVD, the subversive data may be incorporated within video objects and/or may be in gaps between files in the DVD_Video zone. It is arranged that there are no navigable paths to the regions of subversive data.

Abstract: Technologies to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disk (200) carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations (225), access secure non-volatile storage, submit data to CODECs for output (250), and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.

Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.

Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.

Abstract: A robust technique to prevent illicit copying of video information notwithstanding the use of image scaling. A watermark is embedded into the video signal (e.g., DVD's content or other video sources) at different scales (i.e., sizes). The watermark is maintained at each scale for a predetermined time duration that is sufficient to allow the detector circuit in a DVD-recorder, DVHS recorder, DVCR, or any other digital format recorder to detect, extract, and process information contained in the watermark. At the end of the predetermined time duration, the watermark is changed to a different scale preferably on a pseudo-random basis to ensure that each one of all the scales in a predetermined scaling range is achieved a predetermined number of times. Thereby the recorder shuts off a number of times during play of the content, each time the detector circuit senses the watermark.

Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.

Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.

Abstract: Techniques for watermarking and distributing are provided. Content is broken into frames, each frame includes a watermark. Resources request the content and each frame of each resource's acquired version of the content includes a watermark. The frames of each resource's acquired version of the content form unique watermark sequences or unique keys. Each watermark sequence or key is uniquely associated with a particular resource. Each resource is also provided one or more delivery plans for acquiring that resource's uniquely watermark and sequenced version of the content over the network.

Abstract: Technologies are disclosed to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disc carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations, access secure nonvolatile storage, submit data to CODECs for output, and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.

Abstract: An applications registry provides a repository of television-based applications. The registry stores information about television-based applications registered, and allows users to view information regarding the registered television-based applications through one or more portals. The information includes a general description of the television-based applications, a description of an entitlement model for the television-based applications, and downloading information to permit a user to download the application to the home media system. The user accesses the registry, to view information about the television-based application, through a home media system. The home media system, which includes a television, accesses the portal over a network, such as the Internet.

Abstract: A copy protection system and method for allowing copying or distribution of a copy protected signal is disclosed. One embodiment includes an apparatus and method for receiving a content signal via a WiFi communications channel, the content signal including a control signal; and using a modifying circuit coupled with the WiFi communications channel to generate an analog copy protection signal based on the control signal, the control signal causing the modifying circuit to add or delete the analog copy protection signal to or from the content signal.

Abstract: A network bridge connects a host device, such as digital media player, cell phone or camera, to content sources over a network to permit the host device to transmit or receive digital media. The network bridge includes a network interface module that identifies at least one media source as well as digital media available on the network. A host device interface module receives, from the host device, file system requests in accordance with a protocol, such as a mass storage protocol. In response to the request, a host device protocol interface module on the network bridge translates the file system request to a request for digital media. The network interface module acquires digital media from the media source, and the host device interface module transfers the digital media to the host device in accordance with the interface protocol. The network bridge may connect to one or more services that provide content to the host device. For example, the services may be accessible over the Internet.

Abstract: A copy protection system and method for allowing copying or distribution of a copy protected signal is disclosed. One embodiment includes an apparatus and method for receiving a media signal in which a copy protection signal is embedded, receiving a control signal, generating a modified media signal by modifying or blanking at least a portion of the copy protection signal, if the control signal is configured to enable modification or blanking of the copy protection signal, and outputting the modified media signal.

Abstract: An applications registry provides a repository of television-based applications. The registry stores information about television-based applications registered, and allows users to view information regarding the registered television-based applications through one or more portals. The information includes a general description of the television-based applications, a description of an entitlement model for the television-based applications, and downloading information to permit a user to download the application to the home media system. The user accesses the registry, to view information about the television-based application, through a home media system. The home media system, which includes a television, accesses the portal over a network, such as the Internet.

Abstract: A system, method and client user interface for a copy protection service employs software agents masquerading as nodes in decentralized networks for monitoring and interdicting file sharing activities of protected files in the networks. A control center communicates with the software agents and subscriber client computers through user interfaces, so as to provide monitoring information to users of the client computers and control the monitoring and interdiction of protected files according to instructions received from the client computers. A one-click method for requesting protection of a file, providing the terms of such protection, and updating billing information for the user is implemented through the user interface to simplify user interaction with the copy protection service.

Abstract: Method and apparatus for controlling subsequent permitted use, such as storage, of video on a digital storage device such as a personal video recorder (PVR). An analog video signal is provided with at least one modification to its video characteristics, for instance in the horizontal blanking interval and vertical blanking intervals, which is of the type having the capacity to inhibit making an acceptable analog video recording of the analog video signal. Examples of these modifications are the well known pseudo-sync (automatic gain control), color stripe (color burst modifications), and added back porch pulses.

Abstract: A method and system for establishing trust in a peer-to-peer network is disclosed. According to one embodiment, a computer implemented method comprises receiving a certificate associated with content from a peer in a peer-to-peer network. A file certificate associated with the content is received wherein the file certificate includes a hash. The validity of the content is determined with the file certificate. The authenticity of the content is determined with the file certificate.

Abstract: A robust technique to prevent illicit copying of video information notwithstanding the use of image scaling. A watermark is embedded into the video signal (e.g., DVD's content or other video sources) at different scales (i.e., sizes). The watermark is maintained at each scale for a predetermined time duration that is sufficient to allow the detector circuit in a DVD-recorder, DVHS recorder, DVCR, or any other digital format recorder to detect, extract, and process information contained in the watermark. At the end of the predetermined time duration, the watermark is changed to a different scale preferably on a pseudo-random basis to ensure that each one of all the scales in a predetermined scaling range is achieved a predetermined number of times. Thereby the recorder shuts off a number of times during play of the content, each time the detector circuit senses the watermark.