| 6996248 |
Apparatus and method for watermarking a digital image |
| Feb-7-2006 |
An apparatus for adding a watermark to a moving image as it is displayed comprises a watermark generator in which data representing a watermark is generated. The watermark contains at least one of location... |
| 6996237 |
Apparatus and methods for including codes in audio signals |
| Feb-7-2006 |
Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code... |
| 6976165 |
System and method for secure storage, transfer and retrieval of content addressable information |
| Dec-13-2005 |
An algorithm (such as the MD5 hash function) is applied to a file to produce an intrinsic unique identifier (IUI) for the file (or message digest). The file is encrypted using its IUI as the key for... |
| 6973445 |
Demarcated digital content and method for creating and processing demarcated digital works |
| Dec-6-2005 |
Flags are used to mark portions of content in a digital work to permit marking or demarcation of portions of the document. The demarcated portions can be handled in various ways. For example, different... |
| 6968018 |
Digital broadcast receiving apparatus, and a method for receiving digital broadcasts |
| Nov-22-2005 |
A receiving apparatus receives digital broadcast signals from a plurality of broadcasting companies in different receiving modes from each other at low cost. It is determined to what limited receiving... |
| 6952685 |
Music distribution system and associated antipiracy protection |
| Oct-4-2005 |
Music is blanket transmitted (for example, via satellite downlink transmission) to each customer's computer-based user station. Customers preselect from a list of available music in advance using an interactive... |
| 6937729 |
Representing entitlements to service in a conditional access system |
| Aug-30-2005 |
A cable television system provides conditional access to services. The cable television system includes a headend from which service "instances", or programs, are broadcast and a plurality of set top units... |
| 6937730 |
Method and system for providing content-specific conditional access to digital content |
| Aug-30-2005 |
Content level filtering or masking of digital content that is broadcast, multicast, or otherwise distributed to receivers in a communications system. Instead of controlling the content only at the location... |
| 6920222 |
Conditional access system enabling partial viewing |
| Jul-19-2005 |
A conditional access system includes an EMM (Entitlement Management Message) analyzer for retrieving partial viewing authorization information. When the partial viewing authorization information permits... |
| 6912513 |
Copy-protecting management using a user scrambling key |
| Jun-28-2005 |
The present invention is a method and apparatus for providing copy protection for a content. A descrambler descrambles the content delivered by a content provider using a local key. A key generator is... |
| 6871355 |
Conditional access system of CATV |
| Mar-22-2005 |
A CATV conditional access system equipped with a digital head end which transmits picture signals of digital programs in a batch mode to terminals provided within a plurality of areas. This digital head... |
| 6865675 |
Method and apparatus for use of a watermark and a unique time dependent reference for the purpose of copy protection |
| Mar-8-2005 |
A copyright protection system for protecting content wherein a time dependent ticket is calculated at a source device by combining a checkpoint with a ticket. The checkpoint is transmitted from a display... |
| 6859878 |
Universal userid and password management for internet connected devices |
| Feb-22-2005 |
An improved system, method, and computer program product is provided to manage userid/password combinations by utilizing a universally accessible Internet location. This site stores and manages an encrypted... |
| 6832319 |
Content guard system for copy protection of recordable media |
| Dec-14-2004 |
A system and method for enabling broadcast programs to be copied once only by consumer recorders includes writing a unique media identification on each blank disk to which content is to copied in a read-only... |
| 6810525 |
Impulse pay per use method and system for data and multimedia services |
| Oct-26-2004 |
A method and system are provided for impulse purchasing of services over a communication network, such as a cable or satellite television network. Such services can include games or information accompanying... |
| 6804357 |
Method and system for providing secure subscriber content data |
| Oct-12-2004 |
A personalized smart card stores therein public and private cryptography keys stored which are used to securely request and receive subscriber content data from a service provider, utilizing a remote control... |
| 6772434 |
Device and method for the integrated presentation of a secondary service as a part of a primary service |
| Aug-3-2004 |
A method and apparatus for providing an integrated presentation of existing media program services and secondary media program services is described. The method comprises the steps of receiving and displaying... |
| 6772344 |
Information distribution and processing system |
| Aug-3-2004 |
A method for delivering computer code to a plurality of processing units is disclosed. A first set of digital data is distributed to the plurality of processing units. The first set of digital data is... |
| 6744892 |
Method and apparatus for geographically limiting service in a conditional access system |
| Jun-1-2004 |
A cable television system provides conditional access to services. The cable television system includes a headend from which service "instances", or programs, are broadcast and a plurality of set top units... |
| 6738912 |
Method for securing data relating to users of a public-key infrastructure |
| May-18-2004 |
The inventive method allows to secure data relating to users of a public key infrastructure who may present certificates (11) at an institution (30) in order to initiate transactions. For this purposes... |
| 6735313 |
Cryptographic method and apparatus for restricting access to transmitted programming content using hash functions and program identifiers |
| May-11-2004 |
A system for restricting access to transmitted programming content is disclosed, which transmits a program identifier with the encrypted programming content. A set-top terminal or similar mechanism restricts... |
| 6725459 |
Descrambling device for use in a conditional access system |
| Apr-20-2004 |
In a conditional access system, a system and method for descrambling a scrambled instance having a predetermined encryption cycle rate is claimed. The invention takes advantage of the inherent encryption... |
| 6721422 |
Object-conditional access system |
| Apr-13-2004 |
Conditional access system for controlling the access of receivers of end-users to a data content source in an uplink system. Said uplink system comprises a scrambler for scrambling data content supplied... |
| 6698019 |
Apparatus and method for controlling viewing of video signals |
| Feb-24-2004 |
An apparatus and method for controlling viewing of video programs. The apparatus includes a signal unit for receiving and processing a video signal, a decoding unit for decoding a grade code of a video... |
| 6690797 |
Descrambling device for the use of several conditional access sub-systems |
| Feb-10-2004 |
The descrambling device comprises hardware resources (1) and first memory zones (CA1, CA2, . . . , CAn) to store at least two different access control codes for controlling the hardware resources. The... |
| 6681330 |
Method and system for a heterogeneous computer network system with unobtrusive cross-platform user access |
| Jan-20-2004 |
Aspects for a heterogeneous computer network system with unobtrusive cross-platform user access are described. In an exemplary system aspect, the system includes a plurality of computer systems coupled... |
| 6651250 |
Digital broadcast receiving system in information processor |
| Nov-18-2003 |
A digital satellite broadcast receiving system is proposed in which the necessary packets of an MPEG2-based transport stream can be transferred to the system memory of a computer to facilitate processing... |
| 6650256 |
Data processing apparatus, data processing method, program, program recording medium, embedded data, and data recording medium |
| Nov-18-2003 |
A data processing apparatus for coding data includes a coder for generating third data by coding first data and second data. A decoding-information generator generates decoding information, the third data... |
| 6636607 |
Method and apparatus for controlling display of content signals |
| Oct-21-2003 |
A method and apparatus for controlling display of content signals begins by receiving a content signal that includes video content and at least one associated content control indicator. The content signal... |
| 6633644 |
Conditional access system for controlling the access to a data content |
| Oct-14-2003 |
A conditional access system for controlling the access of receivers of end-users to data content transmitted from a data content source in an uplink system. The uplink system scrambles the content supplied... |
| 6587561 |
Key delivery in a secure broadcasting system |
| Jul-1-2003 |
A key delivery method for use in an encoded communications system in which at least one encoded item including a first item encoded with a first item control word is sent in a communication stream from... |
| 6459793 |
Cable television setback decoder automatic control |
| Oct-1-2002 |
A setback decoder monitors the IF output from a cable-ready receiver and automatically provides a descrambled audio/video signal back to the receiver for output to the subscriber. When the receiver is... |
| 6456716 |
Apparatus and method for establishing a crytographic link between elements of a system |
| Sep-24-2002 |
A hierarchical cryptographic system has distributed authority among different classes of units in the system. The system may comprise a trusted authority, a first unit authorized by the trusted authority... |
| 6438432 |
Process for the protection of stored program controls from overwriting |
| Aug-20-2002 |
A method is provided for protecting stored-program control systems, in particular in motor vehicles, which offers a software protection system for programming. A programming routine for programming by... |
| 6438233 |
Book data service system with data delivery by broadcasting |
| Aug-20-2002 |
A book data service system in which the book data can be delivered by the broadcasting such that the book data can be delivered to any user located at any place promptly and economically, without causing... |
| 6427013 |
Information broadcasting method, receiver, and information processing apparatus |
| Jul-30-2002 |
An information broadcasting method, a receiver, and an information processing apparatus make it possible to secure safety of information transmission between an information center and information. By encrypting... |
| 6424714 |
Method and apparatus for providing conditional access in connection-oriented interactive networks with a multiplicity of service providers |
| Jul-23-2002 |
A control system provides secure transmission of programs, including at least one of video, audio, and data, between a service provider and a customer's set top unit over a digital network. Program bearing... |
| 6421445 |
Apparatus and methods for including codes in audio signals |
| Jul-16-2002 |
Apparatus and methods for including a code having at least one code frequency component in an audio signal are provided. The abilities of various frequency components in the audio signal to mask the code... |
| 6408073 |
Scramble circuit to protect data in a read only memory |
| Jun-18-2002 |
A scramble circuit for protecting data stored in a read only memory is provided including an initial value generator, a shift register, a logic circuit, an adder and a lock circuit. In said scramble circuit,... |
| 6393126 |
System and methods for generating trusted and authenticatable time stamps for electronic documents |
| May-21-2002 |
A trusted time infrastructure system provides time stamps for electronic documents from a local source. The system comprises a trusted master clock, a trusted local clock, and a network operations center.... |
| 6389542 |
Multi-level secure computer with token-based access control |
| May-14-2002 |
A multilevel computer security system including a computer with multiple security subsystems for secure data storage and data communications at each security level, a smart-card reader for controlling... |
| 6381332 |
Cable television setback decoder automatic control |
| Apr-30-2002 |
A setback decoder monitors the IF output from a cable-ready receiver and automatically provides a descrambled audio/video signal back to the receiver for output to the subscriber. When the receiver is... |
| 6373948 |
Cryptographic method and apparatus for restricting access to transmitted programming content using program identifiers |
| Apr-16-2002 |
A system for restricting access to transmitted programming content is disclosed, which transmits a program identifier with the encrypted programming content. A set-top terminal or similar mechanism restricts... |
| 6353888 |
Access rights authentication apparatus |
| Mar-5-2002 |
A access rights authentication apparatus relieves burdens resulting from handling unique information of a large number of authentication keys and the like of users and protectors such as application authors,... |
| 6351817 |
Multi-level secure computer with token-based access control |
| Feb-26-2002 |
A multilevel computer security system including a computer with multiple security subsystems for secure data storage and data communications at each security level, a smart-card reader for controlling... |
| 6330334 |
Method and system for information dissemination using television signals |
| Dec-11-2001 |
A system and method of information dissemination that permits the user to listen to the specific content of information when and where he or she wants to. A radio or television receiver system receives... |
| 6321385 |
Data receiving-processing apparatus and method, and broadcasting method |
| Nov-20-2001 |
A data receiving-processing apparatus including a receiver for receiving an extended function program or data transmitted thereto, a processor for processing the received data, a first storage such as... |
| 6304660 |
Apparatuses for processing security documents |
| Oct-16-2001 |
A security document processing apparatus is provided having a feed path for receiving documents and at least one imaging assembly for capturing image data from documents received in the apparatus. The... |
| 6292568 |
Representing entitlements to service in a conditional access system |
| Sep-18-2001 |
A cable television system provides conditional access to services. The cable television system includes a headend from which service "instances", or programs, are broadcast and a plurality of set top units... |
| 6256393 |
Authorization and access control of software object residing in set-top terminals |
| Jul-3-2001 |
A method for providing authentication, authorization and access control of software object residing in digital set-top terminals creates a fingerprint ("signature") for each software object, associates... |
