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7627762 |
Signing and authentication devices and processes and corresponding products, notably for DVB/MPEG MHP digital streams
The present invention concerns a device and a process for signing digital streams, each of them comprising contents, related to audiovisual information, and a signaling. The device applies...
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7620180 |
Preparation of content for multiple conditional access methods in video on demand
A method of processing content in a video on demand (VOD) system consistent with certain embodiments of the invention, wherein the content is identified by a first set of packet identifiers (PIDs),...
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7620179 |
System and method for security processing media streams
A system for multi-stream security processing and distributing digital media streams includes a headend, a network, and at least one receiver. The headend is generally configured to generate...
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7617510 |
Media network using set-top boxes as nodes
Subject matter includes methods of using conventional set-top boxes that receive streaming video modulated on coaxial cable rather than over an IP-based LAN as nodes in a media network. In one...
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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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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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7590240 |
Conditional access system and method prevention of replay attacks
In a conditional access system, a headend transmits content to one or more receivers in encrypted transport streams. The system provides a multi-layer security architecture, rendering the system...
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7587604 |
Watermark signal generating method
An apparatus 10 for generating wartermark signals to be embedded as a digital watermark in real-time contents includes: input means 12 for inputting the real-time contents; an input buffer 14 ...
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7587599 |
System and method for providing services
A system for providing secure services to a user via a communications network comprises an applications device including a data processor operable to provide a user service in accordance with an...
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7580525 |
Sub-scrambling/descrambling method and sub-scrambling/descrambling device
A sub-scrambling/descrambling method and device enhances the degree of scrambling of linear PCM data. Data is delimited at predetermined times, and the minimum value of a run is found and used as...
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7580522 |
Digital video broadcasting receiver
A digital video broadcasting receiver comprising a first input for receiving a first transport stream of data (TS# 1 ) and a second input for receiving a second transport stream of data (TS# 2 ),...
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7577252 |
Method for secure object detection in images
A method processes an input image securely. An input image I is acquired in a client. A set of m random images, H 1 , . . . , H m , and a coefficient vector, a=[a 1 , . . . , a m ], are generated...
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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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7562225 |
Timeline protection
A method and system for timecode generation including: receiving an encryption key and an implemented encryption method, for each one of a plurality of frames, receiving a timecode and an...
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7559070 |
Moving image distribution system, moving image dividing system, moving image distribution program, moving image dividing program, and recording medium storing moving image distribution program and/or moving image dividing program
A moving image distribution system, wherein the user can view content moving images at no charge, and the provider of the content moving images can prevent a drain of the moving image contents and...
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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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7552457 |
Method of controlling descrambling of a plurality of program transport streams, receiver system and portable secure device
A method of controlling descrambling of a plurality of program transport streams received by a receiver system comprises receiving a sequence of messages in a conditional access sub-system ( 9,10 )...
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7551736 |
Physical layer header scrambling in satellite broadcast systems
Methods and apparatuses for minimizing co-channel interference in communications systems are disclosed. A method in accordance with the present invention comprises scrambling a first header of the...
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7546618 |
Lower-power standby mode for consumer electronics
A conditional access device is provided. The conditional access device typically includes conditional access decryption, interface, timing and control logic. The conditional access decryption logic...
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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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7545929 |
Analog encryption
The ability to securely transmit information between two locations is of paramount importance in today's communication systems. Before the invention of digital transmission methods, analog...
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7543317 |
Service activation of set-top box functionality using broadcast conditional access system
A method, apparatus, and article of manufacture provide the ability to activate functionality in a set-top box. A feature authorization message is received in a set-top box. The feature...
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7536013 |
User equipment identification specific scrambling
A base station for use in a code division multiple access communication system comprises circuitry configured to process a user equipment identification (UE ID) by ½ rate convolutionally encoding...
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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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7522724 |
System and method of transmission of generalized scalable bit-streams
A method of encrypting a transmission unit of a generalized scalable bit-stream includes, encrypting a plurality of logic units of the transmission unit using a unique encryption key for each logic...
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7519180 |
Method and apparatus for copy protection
Copy protection techniques that utilize a watermark and a permission key are disclosed. The copy protection techniques can provide single-copy copy protection in addition to different levels of...
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7516466 |
Method and apparatus for retrieving data from a broadcast signal
A broadcast signal is received that includes a data identifier that identifies data associated with the broadcast signal. The broadcast signal also includes the data associated with the broadcast...
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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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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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7505589 |
Ternary and higher multi-value digital scramblers/descramblers
Ternary (3-value) and higher, multi-value digital scramblers/descramblers in digital communications. The method and apparatus of the present invention includes the creation of ternary (3-value) and...
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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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7493638 |
Processing terminal, receiving terminal and received data processing system
An IC card (processing terminal) divides a process into process blocks, and holds a time period required for processing each process block. A receiver (receiving terminal) notifies the IC card of a...
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7489801 |
Encoding and decoding signals for digital watermarking
This disclosure describes methods and systems for encoding a digital watermark into and/or detecting a digital watermark from a host (or media) signal such as audio, video or imagery. One...
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7489797 |
Method and apparatus for fragile watermarking
A method of fragile watermarking is characterized by the step of generating at least a first ill-conditioned operator, said ill-conditioned operator being related to values extracted from an image...
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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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7487355 |
Data processing apparatus and method
A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words...
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7477740 |
Access-controlled encrypted recording system for site, interaction and process monitoring
A high level of security for access to recorded information is provided by a method which includes provisioning of a trusted/protected communication linkage such as a tamper-resistant or tamper...
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7477738 |
Data sequence encryption and decryption
A device and method of encrypting a sequence. The method ( 300 ) encrypts data (D i ) over a sequence of encryption periods (T i ) by generating ( 315 ) a sequence of forward encryption keys (GK f...
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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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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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7463736 |
Data process apparatus and method therefor
In an image process apparatus, a key different for each level of hierarchy is generated on the basis of a specific key with respect to image data having a hierarchical structure, the image data in...
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7461256 |
Generating watermark signals
A method for generating watermark signals to be embedded as a digital watermark in real-time contents wherein the method includes: inputting the real-time contents; storing the real-time contents;...
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7457415 |
Secure information distribution system utilizing information segment scrambling
A method and apparatus for securing and, optionally, distributing an information stream by divided the information stream into a collection of segments and compressing the segments, rearranging the...
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7454018 |
Transfer of DVD decode key on a window by window basis to an attached device
Disclosed is apparatus for processing an encrypted data stream within a computer system adapted to receive the encrypted data stream from a data storage device. A data output device is coupled to a...
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7447314 |
Information processing method, information processing apparatus, program, and storage medium
A bitstream of each tile in a code sequence is segmented into bitstreams for respective resolution levels (S 70 ). Image key K_I is generated (S 71 ). Bitstream key K_BS is generated from image key...
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7426274 |
Method and apparatus for generating pseudo random numbers in a video device having an embedded cipher unit
A video source device includes a cipher unit. The video source device uses the cipher unit to generate cipher bits for ciphering video to be transmitted to protect the video from unauthorized...
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7409558 |
Low-latency data decryption interface
Methods and apparatus for reducing the impact of latency associated with decrypting encrypted data are provided. Rather than wait until an entire packet of encrypted data is validated (e.g., by...
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7403622 |
Process for managing a symmetric key in a communication network and devices for the implementation of this process
A symmetric key management process in a communication network comprising a source device furnished with a source of data to be broadcast over the network and at least one receiver device intended...
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