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7631338 |
Interactive content delivery methods and apparatus
Interactive content preservation and customization technology is placed at the broadcast facility to ensure reliable transmission of the interactive content to a local subsystem. An interactive...
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7630499 |
Retrieval and transfer of encrypted hard drive content from DVR set-top boxes
A system and method for retrieval and transfer of encrypted content from a failed set-top box. When content is recorded to the storage device of a set-top box, the content is encrypted with a...
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7627119 |
Encryption of control programs
In order to protect control programs against unauthorized analysis and use during transport via public networks, asymmetrical keys are used. Following the compilation of the control program in the...
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7623663 |
Rolling code security system
A rolling code transmitter is useful in a security system for providing secure encrypted RF transmission comprising an interleaved trinary bit fixed code and rolling code. A receiver demodulates...
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7623662 |
Default encryption and decryption
An apparatus for default encryption of content for distribution, consistent with certain embodiments, has a conditional access system. A conditional access management system communicates with and...
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7620811 |
Server device and program management system
A server apparatus includes a CPU, a RAM, a cipher processing unit for carrying out encryption and decryption, a communication processing unit for carrying out communication with an information...
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7616763 |
Validity verification method for a local digital network key
The aim of this invention is to propose a control method for the conformity of a network key (NK). This method is applied during the transfer of data coming from a conditional access source to a...
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7613302 |
Systems and methods for compression of key sets having multiple keys
Systems, methods and modulated data signals are described herein that provide an efficient way to derive a single key from which a user can extract virtually any number of data encryption keys. A...
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7609836 |
Seamless switching between multiple pre-encrypted video files
In a video on demand (VOD) system, methods and apparatus are provided for seamlessly switching back and forth between two pre-encrypted files having changing encryption keys Such switching back and...
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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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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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7590243 |
Digital media conditional access system for handling digital media content
A method, apparatus, and article of manufacture provide the ability to process digital media content. A secret key (Ka) is obtained and encrypted into an authorization key message (AKM) message....
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7590241 |
Receiver and receiving method
When a channel which is not scrambled is selected, an error occurs in a digital stream processed in a CA processing module, which causes noises to occur in video and audio signals to be viewed. If...
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7590242 |
Selective multimedia data encryption
A conditional access system for multimedia data is disclosed that offers acceptable security at drastically reduced requirements on hardware performance. A selectively encrypted transport stream is...
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7580523 |
Distribution of video content using client to host pairing of integrated receivers/decoders
A host receiver and a client receiver are operatively in a direct broadcast satellite system. Program materials received by the host receiver from the direct broadcast satellite system are...
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7567671 |
Encryption method and apparatus for use in digital distribution system
A method to securely distribute media content such as Audio or Video with associated media information as part of a media package, in a media distribution system. The media content is encrypted and...
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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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7555126 |
Game apparatus managing system, game apparatus, controlling method, computer program and recording medium
A license managing apparatus comprises an inputting device, an encrypting device for encrypting information inputted from the inputting device to produce encrypted information, and an outputting...
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7548624 |
Distribution of broadcast content for remote decryption and viewing
Program materials received from a direct broadcast satellite system are distributed between a host receiver and a client receiver for remote decryption. Using either a same pairing key or different...
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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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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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7545940 |
System for publishing content on a portable digital storage medium
In a method of publishing creative content to at least one local digital display device, a first unit of the creative content is stored on a first portable digital storage medium in an encrypted...
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7543148 |
Audio watermarking with covert channel and permutations
Audio signals, such as a music clip, are inserted with detectable watermarks. The inserted watermark can identify the content producer and provide a signature embedded in the audio signal and...
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7539307 |
System, method, and service for delivering enhanced multimedia content on physical media
Enhanced multimedia content on physical media interacts with the user through a media player and the Internet. Enhanced multimedia utilizes IDs for pieces of content on the media and a media key...
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7526089 |
Device and method for controlling digital bidirectional communication
An interface block ( 11 ) converts the format of input downstream data (STRM). A CPU ( 12 ) receives the format-converted data (DIF) and realizes the MAC function. A TEK process block ( 13 )...
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7523303 |
System and method for distributing digital works, apparatus and method for reproducing digital works, and computer program product
An editing apparatus generates a capsular work with usage conditions for each of plural usages and usage secret information. A ticket server apparatus issues a ticket containing a ticket key in the...
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7523313 |
Image data management apparatus
Property information of image data sets managed in an image data management apparatus can be dealt with according to a characteristic thereof, while efficiency of use can be improved. Image ID 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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7516333 |
Hybrid Java-C network appliance
A network appliance that runs both C and Java integrated software to provide a flexible architecture for rapid prototyping of XML security functionality, including SSL acceleration, XML encryption,...
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7515712 |
Mechanism and apparatus for encapsulation of entitlement authorization in conditional access system
A method for determining whether the terminal is authorized to receive the selected service is practiced in a terminal of a conditional access system in which a user selects a service, the selected...
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7508943 |
Multimedia storage systems and methods
An article of manufacture includes a machine-readable medium that stores a multimedia content file in a first format and multiple program sets. Each program set is a version of software that, when...
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7508942 |
Multi-process descrambler
A descrambler integrated circuit (IC) is adapted to receive scrambled digital content and to descramble the scrambled digital content. According to one embodiment of the invention, the descrambler...
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7508941 |
Methods and apparatus for use in surveillance systems
A control signal is provided to a video data acquisition system that generates video data. In response to receiving the control signal, the video data acquisition system modifies at least a portion...
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7505590 |
Method and system for providing transcodability to frame coded streaming media
Disclosed are methods and systems for providing transcodability to media in a network, comprising separating an amount of media data into a segment, and combining the segment and a transcoder...
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7502466 |
System and method for secure communication of electronic documents
The present invention is directed to a system and method for secure communication of electronic documents to a document processing device. A document processing request containing electronic...
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7492897 |
Conditional access system for broadcast digital television
A method for managing access to scrambled broadcast or transmitted events received from a variety of service providers (including broadcast television networks, cable television networks, digital...
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7489780 |
Security integrated circuit
A semiconductor integrated circuit for the processing of conditional access television signals comprises an input interface for receiving encrypted television signals and an output interface for...
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7477743 |
Hybrid network encrypt/decrypt scheme
A hybrid method for a service provider to transmit decryption information (e.g., algorithms, parameters, keys) to clients in a secure manner and at low cost for use in decrypting broadcast...
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7477744 |
Device and method for selectively supplying access to a service encrypted using a control word, and smart card
Device ( 120 ), smart card ( 300 ) and method for selectively supplying access to a service ( 202 ) encrypted using a control word. A service ( 202 ) is received with an entitlement control message...
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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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7454626 |
Transmitting/receiving apparatus and a transmitting/receiving method
A security apparatus and a security method for controlling electric devices by use of electronic mails. A modem receives an electronic mail sent from a sending side and stores the received...
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7437572 |
Key management device and method for the encrypted storage of digital data words
Key management device for electronic memories and a method for the encrypted storage of digital data words in electronic memories, in which each stored data word is encrypted with a digital...
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7434265 |
Information signal recording/reproducing system, information signal recording device, information signal reproducing device and information signal recording/reproducing process
When digital image signals inputted through an inputting terminal are recorded on a disc, a medium-related information (a serial number in an TOC) of the disc, read from the disc, with a...
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7406120 |
Transmission channel impulse response estimation using fast algorithms
Channel impulse response estimation employs a training sequence to enable correction for multipath and other disturbances affecting a signal during transmission via a digital wireless communication...
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7403619 |
Interface module and decoder for host
The present invention relates to an interface module for a host ( 2 ) such as a digital television decoder, permitting the processing of information coming from the host ( 2 ) in a conditioned...
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7403618 |
Conditional access
A transmitter provides receivers conditional access to data transmitted via a network. A content encryptor is used to encrypt the data under control of a same authorization key before it is...
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7400725 |
Information recording medium for recording a scrambled part of content information, and method and apparatus for reproducing information recorded therein
An information recording medium, such as an optical disk or the like, is provided for recording at least copyrighted content information and cipher key information. A part of the content...
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7400729 |
Secure delivery of encrypted digital content
A content decoder is split into a decoder core and remaining portions. The decoder core implements decryption of encrypted content according to a selected encryption scheme, and the remaining...
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7392389 |
Electronic transmission device, and signal transmission method
An electronic signal transmission device comprises a first communication section to be connected to a first electronic device of a signal transmitting side; a second communication section to be...
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7386129 |
System and method for multimedia content simulcast
A computer-implemented method is described for processing multimedia channels comprising: encrypting a first group of multimedia channels using a first type of encryption to produce a first group...
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