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7623660 |
Method and system for pipelined decryption
A method and system for pipelined decryption is disclosed. One embodiment includes a circuit having an iterative calculation section and a cipher text storage section in support of cipher block...
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7620975 |
Internal routing protocol support for distributing encryption information
A method and apparatus for providing routing protocol support for distributing encryption information is presented. Subnet prefixes reachable on a first customer site in an encrypted manner are...
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7613319 |
Electronic watermark generating apparatus, method, and program for generating electronic watermark
An electronic watermark generating apparatus color-converts an RGB image, and divides the color-converted image into a plurality of blocks. Then, the apparatus embeds to-be-embedded information as...
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7610246 |
Information processing apparatus, control method therefor and computer readable information recording medium
An information processing apparatus handling a removable formation recording medium storing predetermined substance information and first license information concerning the information processing...
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7606388 |
Contents border detection apparatus, monitoring method, and contents location detection method and program and storage medium therefor
A contents border detection apparatus and monitoring method. The apparatus comprises a digital watermark detector for detecting a digital watermark embedded in contents for which a time element is...
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7602912 |
Content selection for partial encryption
A method of selecting data for multiple carriage partial encryption consistent with certain embodiments involves examining unencrypted packets of data in a digital audio/video data stream to...
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7602908 |
System and method for using a streaming protocol
An initialization vector (IV) is employed to decrypt a block of a stream that has been encrypted with Cypher Block Chaining (CBC) encryption, without requiring decryption of previous blocks within...
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7599927 |
Method for searching content particularly for extracts common to two computer files
The present invention relates to searching content, particularly for at least one extract common to a first data file and a second data file. The method comprises a preliminary step of preparing at...
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7593529 |
Scramble methods and apparatus for packetized digital video signal in conditional access system
A conditional access scrambling or encryption technique for a packetized digital data stream, e.g., a MPEG-2 bitstream, (1) by scrambling or encrypting the data payload of selective transport...
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7591011 |
Assigning higher priority to transactions based on subscription level
A computing system is configured to receive incoming packets at a first priority designated for use when receiving packets that are not associated with specific subscription levels. Incoming...
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7590860 |
Secure data processing apparatus
A method for processing data involving receiving a scrambled program and encrypted data including at least one control word used to descramble the scrambled program at a receiver/decoder...
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7587603 |
Protecting content from illicit reproduction by proof of existence of a complete data set via self-referencing sections
Data items are selected for inclusion in a data set so as to discourage a transmission of the entire set. Each data item includes section(s) which constitute(s) the complete data set. Each section...
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7580520 |
Methods for scaling a progressively encrypted sequence of scalable data
A method for scaling a progressively encrypted sequence of scalable data is disclosed. The method includes associating data with the progressively encrypted sequence of scalable data that...
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7568111 |
System and method for using DRM to control conditional access to DVB content
A system and method is disclosed for providing DRM in a broadcast environment. In accordance with the embodiment, a DRM system distributes encrypted service keys over the mobile telephone network...
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7567674 |
Content transmission apparatus, content reception apparatus, content transmission program, and content reception program
A content transmission method, a content reception method, an apparatus and a computer program using same, that improve the efficiency of descrambling a scrambled content, make the management of...
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7567670 |
Verification information for digital video signal
According to some embodiments, verification information is provided for a digital video signal. For example, a digital video signal including a first portion and a second portion may be determined...
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7565546 |
System, method and apparatus for secure digital content transmission
A mating key gateway is adapted to retrieve a mating key, which is used to encrypt a program key that is used to scramble digital content prior to transmission to a digital device. According to one...
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7561715 |
Method and arrangement for watermark detection
A graphics card of a computer system is configured to detect watermarks within a video signal that includes one or more windows of a display. The frames of the video signal are analyzed to locate...
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7555650 |
Techniques for reducing the computational cost of embedding information in digital representations
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...
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7555129 |
Content playback apparatus, content playback method, and program
A content playback apparatus prevents related content recorded on separate media that make up a virtual package from being played separately, thereby restricting playback of the content to only...
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7549063 |
Methods and systems of protecting digital content
Methods and systems are described that enable protection of digital content, such as movies and the like, by making pirated copies traceable back to a unique decryption key that was utilized to...
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7548618 |
Converter, encryption/decryption system, multi-stage converter, converting method, multi-stage converting method, program, and information recording medium
A converter uses a predetermined parameter a. A generating unit accepts generated inputs x 1 , . . . , x n , and generates generated outputs, y 1 , . . . , y n , using recurrence formulas, y 1 =F 1...
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7548532 |
Method and apparatus to provide inline encryption and decryption for a wireless station via data streaming over a fast network
A method of wirelessly transmitting or receiving a packet of information, and an apparatus to wirelessly transmit or receive a packet of information. In the case of transmitting, the method...
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7545936 |
Method and device for incorporating additional information into main information through electronic watermarking technique
Two data units are selected from main information, such as MIDI data, into which additional information is to be incorporated, to calculate a difference between respective values of the two data...
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7545935 |
Networked multimedia overlay system
Systems and methods are disclosed for providing encrypted downstream signals to a plurality of receiver devices 130, 135, 140 , where the devices 130, 135, 140 may have different decryption...
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7542571 |
Transmitting second content data with reference for use with first content data
Usage by second content of previously distributed first content, is permitted if the proper electronic signature is incorporated into predetermined data added to the second content. A secret key...
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7530108 |
Multiprocessor conditional access module and method for using the same
A system and method of controlling access to a media program via a receiver communicably coupleable to a conditional access module is described. The apparatus comprises a first processor, a second...
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7529941 |
System and method of retrieving a watermark within a signal
A system and method of retrieving a watermark in a watermarked signal are disclosed. The watermarked signal comprises odd and even overlapped blocks where the watermark is contained in the even...
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7528993 |
Hiding images in halftone pictures
A method for hiding at least one pattern within a visible representation of the other different pattern is presented. The method is carried out by an encoding device and consists of selecting a...
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7526451 |
Method of transferring digital rights
A system and method of transferring digital rights from a first device to a second device. A target rights management object is transferred from the first device to the second device. A...
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7526091 |
Method for transmitting and receiving control information for encryption in a mobile communication system supporting multimedia broadcast/multicast service
A method for minimizing overhead occurring caused by control information for encryption performed to protect MBMS data for an MBMS service in a mobile communication system. This method is...
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7519811 |
Data transmission controlling method and data transmission system
Disclosed herein is a data transmission system permitting secure and more reliable transmission of data from a data transmitter to a data receiver or receivers. The system comprises: a data...
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7519228 |
Method and apparatus for encrypting and compressing multimedia data
Disclosed herein is a method and apparatus for encrypting and compressing multimedia data, which transforms and compresses multimedia data through an encryption key in a process of compressing the...
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7515710 |
Federated digital rights management scheme including trusted systems
Federated systems for issuing playback certifications granting access to technically protected content are described. One embodiment of the system includes a registration server connected to a...
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7509667 |
Broadband content jukebox with profile-based caching
The present invention employs a cache for storing a large repository of digital media files (i.e., content) in a local hard drive of individual users, whereby a slower delivery mechanism can be...
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7508940 |
Video information recording apparatus and method, video information reproducing apparatus and method, recording medium, and program
A video information recording apparatus includes a first obtaining unit operable to obtain video information to be recorded; a second obtaining unit operable to obtain thumbnail picture information...
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7505584 |
Contents management method, contents management apparatus, and recording medium
An apparatus generates first shared information that is shared by the apparatus and a recording medium by performing a first bilateral authentication. The apparatus encrypts overwrite data that is...
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7502470 |
Method and apparatus for content protection within an open architecture system
In a class of embodiments, the invention is an open computing system (e.g., a PC) in which a protected, closed subsystem is embedded. The closed subsystem typically includes multiple parts that...
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7499546 |
Insertion of supplementary information in digital data
The invention concerns a method of inserting a suppementary information item in a set of data reprenting physical quantities, the data having been processed by the steps of, a) partitioning (E 2 )...
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7496768 |
Providing secure input and output to a trusted agent in a system with a high-assurance execution environment
Techniques are disclosed to provide security for user output and input in which a first, host operating system is used along with a second, high assurance operating system (nexus), where the first...
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7496198 |
Partial dual encrypted stream utilizing program map tables
The present invention is suitable for use in a partial dual encrypted system. The present invention allows for two different decryption devices (e.g., an incumbent, or first, set-top and an...
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7496197 |
Method and system for robust embedding of watermarks and steganograms in digital video content
A method for robust embedding of information into video content, said method comprising of breaking said video content into a series of at least one unit; selecting at least one of said units;...
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7492895 |
Data recording method and apparatus, data reproducing method and apparatus, and data recording and/or reproducing system
Even though data transmitted between a data processing apparatus and disc recording and/or reproducing apparatus is monitored, copying the data is effectively prevented and the data can be...
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7486790 |
Method and apparatus for controlling access to storage media
A method and apparatus for controlling access to a storage medium, such as an optically readable medium. Light sensitive or other materials that are adapted to change state and affect reading of a...
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7475331 |
Data dependent scrambler with improved global constraint
A data dependent scrambler for a communications channel that receives a user data sequence including N symbols each with M bits includes a seed finder that selects a scrambling seed and a first...
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7469420 |
Key transport tamper protection
A method for protecting the digital output signal of a security module, comprising the steps of: receiving a scrambled digital signal from a source external to said security module, recovering at...
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7469049 |
Data dependent scrambler with reduced overhead
A data dependent scrambler for a communications channel that receives a user data sequence including X bits that are organized as N M-bit symbols includes a seed finder that generates a scrambling...
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7466826 |
Method of secure transmission of digital data from a source to a receiver
To transmit digital data representing a content from a source to a receiver through a digital communication channel, the data being scrambled by at least one control word, the method includes the...
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7466822 |
Data coding
Data coding apparatus in which input data having a range of possible data values and a smaller sub-range of legal data values is coded by applying a coder mapping which maps input data values in...
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7464271 |
Systems and methods of providing content protection for digital video products
A digital watermark is affixed to an existing image file prior to being copied onto a destination media. In one embodiment, the image file is encrypted using content scrambling system (CSS)...
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