摘要:
A method and system is provided for embedding cryptographically modified versions of secret in digital certificates for use in authenticating devices and in providing services subject to conditional access conditions.
摘要:
Devices and methods for scoring viewer's interactions with content broadcast on a presentation device by processing at least one audio signal received by a microphone proximate the viewer and the presentation device, to generate at least one audio signature, which is compared to at least two different reference audio signatures.
摘要:
A method of classifying the shot type of a video frame, comprising loading a frame, dividing the frame into field pixels and non-field pixels based on a first playfield detection criteria, determining an initial shot type classification using the number of the field pixels and the number of the non-field pixels, partitioning the frame into one or more regions based on the initial classification, determining the status of each of the one or more regions based upon the number of the field pixels and the non-field pixels located within each the region, and determining a shot type classification for the frame based upon the status of each the region.
摘要:
Determining sensitive information and preventing the unauthorized or unintended dissemination of such information are disclosed. Terms are determined from documents associated with users in a network. Distributions among users and relative frequencies with which the terms are used are determined. Link strengths between users are calculated. Based on the distribution of the terms, the relative frequencies of use among the user profiles and link strengths between users conducting information transactions that include the terms, a sensitivity level for each term can be determined. To determine whether a particular information transaction with particular terms may be conducted between two users in the network, a combination of link strength between the users and sensitivity level of the terms with respect to the users or users' profiles are considered. If the information transaction includes terms that are unknown to one of the users, then a warning or alarm can be raised.
摘要:
Video, including a sequence of original pictures, is encoded using eye tracking maps. The original pictures are compressed. Perceptual representations, including the eye tracking maps, are generated from the original pictures and from the compressed original pictures. The perceptual representations generated from the original pictures and from the compressed original pictures are compared to determine video quality metrics. The video quality metrics may be used to optimize the encoding of the video and to generate metadata which may be used for transcoding or monitoring.
摘要:
A method is provided for processing multilayer bit streams that includes receiving the multilayer bit streams of Scalable Video Code (SVC) each having a base layer and at least one enhancement layer. One or more of the enhancement layers are extracted in whole or in part from at least one of the multilayer bit streams so that the multilayer bit streams are collectively reduced in their total bandwidth. Each of the extracted bit streams are rewritten to a single layer bit stream. The single layer bit streams are then multiplexed to form a multiplexed single layer bit stream that is non-SVC.
摘要:
In a video distribution system, a divider (105) to segment an input video stream (302) into partitions for each of a plurality of channels of the video stream is provided. A channel analyzer (306) is coupled to the divider wherein the channel analyzer decomposes the partitions. An encoder (106) is coupled to the channel analyzer to encode the decomposed partitions into an encoded bitstream (208, 210) wherein the encoder receives coding information from at least one of the plurality of channels to be used in encoding the decomposed partitions into the encoded bitstream. A decoder (124) receives the coded bitstream to decode the received bitstream and to reconstruct the input video stream. The decoder uses the coding information to decode the bitstream.
摘要:
A content moving device may provide content to plurality of different user devices using a plurality of different DRM systems. The content moving device provides for registration of the DRM systems associated with the user devices. The content moving device may verify a user device by a DRM ID associated with the user device. A domain size may be used to limit the number of content user devices that may be approved for access.
摘要:
Preparing a three dimensional (3D) video graphical overlay based on a two dimensional (2D) graphical image in a decoded stereoscopic video signal. This includes receiving the 2D graphical image and receiving 3D information associated with the 3D video graphical overlay. This also includes reproducing, using a processor, the 2D graphical image to form a first view graphical image and a second view graphical image in a graphics window. This also includes mapping the first and second view graphical images, using the 3D information, to frames in the 3D video to form a 3D video graphical overlay of a 3D video stream. This also includes blending the 3D video graphical overlay and the 3D video stream.