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7221760 |
Information security using digital holography
A method and system for encrypting multi-dimensional information utilizing digital holography is presented. A phase-shifting interferometer records the phase and amplitude information generated by...
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7218737 |
System and method for an adaptive state machine to control signal filtering in a serial link
A method for adaptively filtering a control signal in a serial link includes monitoring for a blanking interval in a video stream having an associated clock signal and monitoring for an occurrence...
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7215774 |
Video data transfer control system and method
A video data transfer control system allowing secure protection of video data from unauthorized copying is disclosed. A scrambling key used to scramble video data is stored in a key register and a...
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7212630 |
Method and apparatus for encryption using partial information
A method and apparatus of encrypting optical images using binarization or phase only information is presented with a number of ways to secure the image also being provided. An image to be encrypted...
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7206940 |
Methods and systems providing per pixel security and functionality
Various described embodiments provide for per-pixel functionality in connection with pixel data that is processed by a video card for rendering on a display monitor. That is, pixel data that is...
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7200230 |
System and method for controlling and enforcing access rights to encrypted media
A system for providing rights controlled access to digital media comprises a server data processor and a client data processor connected by a communications network. The user data processor...
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7185208 |
Data processing
In one embodiment of the present invention, there is disclosed a reversible method of processing data comprising the data being encrypted before being written to a non-volatile memory wherein the...
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7177525 |
Digital watermark embedding method, digital watermark embedding apparatus and recording medium having a digital watermark
This invention provides a digital watermark embedding method that is a method of embedding a digital watermark, which is generated according to specific rules, in contents comprising digital data,...
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7177429 |
System and methods for permitting open access to data objects and for securing data within the data objects
A system and methods for permitting open access to data objects and for securing data within the data objects is disclosed. According to one embodiment of the present invention, a method for...
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7167561 |
Recording apparatus, recording method, reproducing apparatus, and reproducing method
A recording apparatus is disclosed, that comprises a compression process means for compressing an input digital signal corresponding to a predetermined compression process and segmenting the...
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7167560 |
Partial encryption of stream-formatted media
A method of partially encrypting streaming media according to an embodiment of the invention comprises: receiving media in a streaming-media format; partitioning the stream-formatted media into...
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7155012 |
Slice mask and moat pattern partial encryption
A selective encryption encoder consistent with certain embodiments of the invention has vertical and/or horizontal stripes encrypted. In one embodiment, packets are examined in the digital video...
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7155013 |
Recording apparatus, recording method, reproducing apparatus, and reproducing method
A recording apparatus is disclosed, that comprises a compression process means for compressing an input digital signal corresponding to a predetermined compression process and segmenting the...
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7155015 |
Optical disk apparatus and data randomizing method using for optical disk apparatus
In the optical disk apparatus, an arbitrary seed data for randomizing is added to an original data to be recorded on a disk. One-bit randomizing data is determined by operation using one-bit...
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7151833 |
Selective encryption to enable trick play
Certain embodiments consistent with the present invention involve a method of selectively encrypting and decoding digital video content. Certain of the packets are selected for encryption according...
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7151832 |
Dynamic encryption and decryption of a stream of data
Dynamic varying of encrypting of a stream of data at an encryption unit based on data content is disclosed. The dynamic varying of the encrypting, which can be responsive to passage of a predefined...
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7151831 |
Partial encryption and PID mapping
An encryption arrangement for multiple encryption of television programs. A system according to embodiments of the present invention multiple encrypts only a portion of the data required for full...
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7146007 |
Secure conditional access port interface
An apparatus and method thereof for providing a secure path for a digital signal in an intelligent transceiver such as a bi-directional set-top box. A digital signal (e.g., a broadcast signal or a...
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7139398 |
Time division partial encryption
An encryption arrangement for multiple encryption of television programs. A system according to embodiments of the present invention multiple encrypts only a portion of the data required for full...
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7136487 |
System and method for automatically protecting private video content using embedded cryptographic security
A system and method for automatically protecting private video content using embedded cryptographic security is disclosed. A substantially continuous video signal representing raw video content is...
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7123718 |
Utilizing data reduction in stegnographic and cryptographic systems
The present invention relates to methods for protecting a data signal using the following techniques: applying a data reduction technique to reduce the data signal into a reduced data signal;...
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7120252 |
System and method for automatically protecting private video content using cryptographic security for legacy systems
A system and method for automatically protecting private video content using cryptographic security for legacy systems is disclosed. A substantially continuous video signal representing video...
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7113597 |
System and method for protection of video signals
A method and system are provided for protecting an analog video signal sent from a video signal source to a video display enabled to receive a protected video signal. The method includes sending a...
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7109894 |
Encoding and decoding a media signal with high and low quality versions
The invention discloses a method of embedding information for high quality restoration of a media signal (typically an audio-visual signal) in a lower quality version of the signal. To this end,...
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7110542 |
Protecting audio/video content during storage and playback on a processor-based system
A system for protecting audio/video content during storage and playback on systems with open buses receives a multiplexed signal, including a plurality of A/V signals and decryption keys. Following...
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7106859 |
Parallel data scrambler
A data scrambler is capable of scrambling N bits of data in parallel using a 2 B −1 bit scrambling sequence. The scrambler may store scrambling values of an m-sequence in a table. The table may...
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7103184 |
System and method for sign mask encryption and decryption
In general, one embodiment of the invention involves a method to protect the integrity of the sign mask. The method involves computing a key shared by a plurality of software modules employed...
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7099479 |
Information transmission system, transmitter, and transmission method as well as information reception system, receiver and reception method
Content data encrypted with a content key, the content key encrypted with an individual key specific to an information sending device, and the individual key encrypted with a distribution key that...
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7092729 |
Method and apparatus for broadcasting and receiving entitlement management messages
The present invention provides a method of broadcasting a message having a text portion to be communicated to a user, the method including broadcasting the message in the form of an entitlement...
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7076651 |
System and method for highly secure data communications
A system and method for highly secure data communication. Embodiments of the invention may include encrypting data a first time, packetizing the data, encrypting the data a second time and...
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7076659 |
Enhanced method for digital data hiding
A method is provided for enhanced spread spectrum watermarking. The improved watermarking method includes: receiving host data which is expressed in a transform domain by a plurality of host...
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7072490 |
Symmetry watermark
A digital watermark is generated with radial and circumferential symmetries in a particular domain of a host signal into which it is embedded. These symmetries enable a detector to compute the...
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7072470 |
Video scramble/descramble apparatus
A video scramble apparatus has a scrambler for scrambling an input video signal, and a video encoder for performing interframe predictive coding of the video signal after scrambling, and the...
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7072471 |
Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device
In a data multiplexing device which multiplexes and transmits the transport stream packets of program data consisting of a plurality of data elements constructed in the form of transport stream...
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7065211 |
Signal reproducing/recording/transmitting method and apparatus and signal recording medium
A video signal reproduction system for receiving a video signal transmitted via a satellite communication link at a receiving device. A copy permission indicator is inserted in the received video...
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7062047 |
Signal reproducing/recording/transmitting method and apparatus and signal recording medium
A video signal reproduction system for receiving a video signal transmitted via a satellite communication link at a receiving device. A copy permission indicator is inserted in the received video...
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7058202 |
Authentication with built-in encryption by using moire intensity profiles between random layers
This invention discloses new methods, security devices and apparatuses for authenticating documents and valuable articles which may be applied to any support, including transparent synthetic...
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7054654 |
Automatic messaging in response to television viewing
An automatic messaging system, in which, when a person tunes to a particular television station, a video server sends an SMS message indicating the station being watched. The video server could be...
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7050076 |
Optical state modulation apparatus, display system and optical state modulation method
An optical state modulation unit is provided to apply an optical intensity modulation in temporal domain on a display image generated from an inputted image signal for different gray scale values...
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7050588 |
System for processing an information signal
A system for processing an information signal comprises a system ( 1 ) for scrambling the information signal and at least one system ( 2 ) for descrambling the scrambled information signal. The...
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7046806 |
Information recording apparatus and method, and information reproduction apparatus and method
As an example of this invention, user data which is broken up into sectors and is scrambled for each sector using a randomly generated scramble pattern, and scramble pattern data for specifying the...
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7046805 |
System and method for efficiently storing and processing multimedia content
A method is described comprising: receiving a broadcast signal containing a plurality of encrypted multimedia channels; storing the encrypted multimedia channels in a first hard drive partition;...
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7043020 |
Smartcard for use with a receiver of encrypted broadcast signals, and receiver
A smartcard for use with a receiver of encrypted broadcast signals comprises a microprocessor for enabling or controlling decryption of said signals. A memory is coupled to the microprocessor. The...
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7039189 |
Stream continuity enforcement
A system for enforcing data stream continuity, in accordance with the present invention, includes a server coupled to a transmission link for providing a data stream to at least one client over the...
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7023992 |
Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device
In a data multiplexing device which multiplexes and transmits the transport stream packets of program data consisting of a plurality of data elements constructed in the form of transport stream...
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7023881 |
System and method for selectively scrambling multidimensional digital frame structure communications
A system and method have been provided to increase security in scrambled communications by periodically changing the seed masks used to generate the scrambling algorithms at the transmitter and...
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7017045 |
Multimedia watermarking system and method
A system and method for verifying and authenticating multimedia objects. Provided is a system for splitting a watermark into at least a first and second part, inserting the first part of the...
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7012932 |
Digital broadcast data receiving apparatus
A digital broadcast data receiving apparatus comprises a plurality of broadcast data receiving units for receiving digital broadcast data supplied from a plurality of digital broadcast data...
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7010685 |
Method and apparatus for storing scrambled digital programs by filtering product identifier
In accordance with one embodiment, a method for storing a normal scrambled digital program is provided. The method includes receiving a scrambled program, and receiving a plurality of access...
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7003118 |
High performance IPSEC hardware accelerator for packet classification
An architecture for a high performance IPSEC accelerator. The architecture includes components for scanning fields of packets, programming an IPSEC services device according to the scanned fields,...
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