| 7010685 |
Method and apparatus for storing scrambled digital programs by filtering product identifier |
| Mar-7-2006 |
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 requirements.... |
| 7010125 |
Method for tracing traitor receivers in a broadcast encryption system |
| Mar-7-2006 |
A method for tracing traitor receivers in a broadcast encryption system. The method includes using a false key to encode plural subsets representing receivers in the system. The subsets are derived from... |
| 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... |
| 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... |
| 6944298 |
Steganographic encoding and decoding of auxiliary codes in media signals |
| Sep-13-2005 |
One aspect of the invention is a method of decoding an auxiliary code embedded in an audio signal. The method performs a statistical decoding of a multibit auxiliary code embedded in an audio signal. The... |
| 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... |
| 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... |
| 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... |
| 6711261 |
Enhancing concealment in the presence of fine mistuning for various TV scrambling techniques |
| Mar-23-2004 |
An improved method and apparatus for maintaining concealment for a scrambled signal when frequency pre-emphasis is used to defeat the scrambling. The pre-emphasis may be synthesized with high pass or peaking... |
| 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... |
| 6591420 |
Remote control system for audio and video content |
| Jul-8-2003 |
A program distribution system is disclosed for the simultaneous release of a program at a plurality of locations. The locations may include local broadcasters, or even individual devices. A program is... |
| 6526510 |
Signal reproducing method and apparatus, signal recording method and apparatus and signal recording system |
| Feb-25-2003 |
A signal reproducing method and apparatus in which the generation limitation information, such as a token or a ticket, contained in digital data, is recorded in analog signals. A reproducing device 20... |
| 6490356 |
Broadcast receiving system comprising a computer and a decoder |
| Dec-3-2002 |
A combined computer and decoder system for receiving broadcast digital data transmissions, characterized in that the decoder (2020) comprises a routing means (2032), broadcast digital data received at... |
| 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... |
| 6393128 |
System for broadcasting data signals in a secure manner |
| May-21-2002 |
A system for broadcasting data signals in a secure manner comprises means for encrypting the data signals using a first key, means for broadcasting the encrypted data signals to subscribers, means for... |
| 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... |
| 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... |
| 6144402 |
Internet transaction acceleration |
| Nov-7-2000 |
The invention is a multiple mode transmission system that interconnects the computer of a user with the Internet. The system has a first link that is a relatively low bandwidth telephone system. The system... |
| 6122377 |
Video signal receiver with record protection |
| Sep-19-2000 |
A video signal receiver has a first output terminal, at which only a chroma, video, blanking, sync signal or a video, blanking, syncs signal with a chrominance signal is output. A second output terminal... |
| 6115471 |
Member-exclusive service system and method through internet |
| Sep-5-2000 |
A client receives a remote installation service (RIS) activated by a browser through the Internet, and notifies an RIS server of a software number corresponding to an icon pointed to and clicked by a pointing... |
| 6055315 |
Distributed scrambling method and system |
| Apr-25-2000 |
A scrambling system for a cable television system in which a group of channel frequencies are reused over a plurality of service areas includes an access controller, an encoder and a plurality of simplified... |
| 6005937 |
Universal decoder |
| Dec-21-1999 |
A universal decoder consisting of modules that may be exchanged with a module of a like type which provides automatic frequency changes and remote system control of the decoder by a host computer. The... |
| 5978012 |
Data receiving-processing apparatus and method, and broadcasting method |
| Nov-2-1999 |
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... |
| 5815572 |
Video scrambling |
| Sep-29-1998 |
A system for scrambling a video signal, wherein multiple modes of scrambling are available, including (i) line reversal, (ii) line inversion, (iii) line permutation, and (iv) block permutation. The invention... |
| 5742677 |
Information terminal having reconfigurable memory |
| Apr-21-1998 |
An information terminal includes a secure microprocessor and secure non-volatile memory. Data such as authorization data and other service provider related data for subscription information services are... |
| 5719943 |
Digital information signal transmitting/receiving method and system |
| Feb-17-1998 |
A digital information signal transmitting/receiving method and system having a transmitter for transmitting an encrypted digital information signal and a plurality of receivers for receiving the encrypted... |
| 5699426 |
Video data bus communication system and method |
| Dec-16-1997 |
A video data communication system and method are disclosed which provides for the secure transmission of video data among devices connected to a video data bus. The video data is transmitted with address... |
| 5579391 |
TV scramble system for preventing illegal reception |
| Nov-26-1996 |
A scramble system can effectively prevent a scrambled broadcast from being viewed illegally. In a scramble system in which a video signal scrambled by a scrambling apparatus (10) is descrambled by a decoding... |
| 5570198 |
Paid broadcast receiving device with connection detecting capability |
| Oct-29-1996 |
A paid broadcast receiving device has a decoder connection detector for determining whether or not a video cassette recorder (VCR) and a canal+ decoder are connected. The determination depends on an impedance... |
| 5557675 |
Computer controlled audio-visual system |
| Sep-17-1996 |
A computer receiving an audio/video signal for controlling an audio/video system including at least one television, comprising a tuner for tuning a selected channel from among a plurality of channels present... |
| 5537612 |
Remotely selectable audio/video/text disruption |
| Jul-16-1996 |
A television receiver is equipped with hardware/firmware so that it may be disabled by a remotely transmitted series of codes. In a preferred embodiment, the display of the receiver indicates that the... |
| 5530756 |
Television scrambling and descrambling method, and transmitter and receiver using said method |
| Jun-25-1996 |
In a television transmission system comprising an analog video channel scrambled with a control word which is changed occasionally and a NICAM sound channel scrambled with a control word which is also... |
| 5497418 |
Data processing system having a set of memory cards |
| Mar-5-1996 |
A data processing system comprises a set of memory cards (10) and at least one central administration and processing unit (22). According to the invention, the memory cards and the processing unit together... |
| 5481609 |
System for controlling access to broadcast transmissions |
| Jan-2-1996 |
A system for controlling access to broadcast transmissions including a transmitter having a transmission encoder for scrambling the broadcast, a multiplicity of subscriber receivers, each having an identical... |
| 5442701 |
Process for the broadcasting of conditional access programs permitting a progressive access to such programs |
| Aug-15-1995 |
A process for broadcasting conditional access programs which permits a progressive access. Scrambled program data is transmitted along with partial access checking messages and complete access checking... |
| 5440632 |
Reprogrammable subscriber terminal |
| Aug-8-1995 |
A reprogrammable subscriber terminal of a subscription television service which can have the control program code of its control processor modified by downloading new program code from the headend. The... |
| 5414756 |
Telephonically programmable apparatus |
| May-9-1995 |
To initialize a remote control device for use in a particular installation, initialization parameters are entered relating to the relationship between user input codes and equipment to be controlled. In... |
| 5414456 |
Signal receiving apparatus with automatically activated scrambled signal decoder |
| May-9-1995 |
In a scrambled signal receiving apparatus connectable to a television receiver equipped with a BS (broadcasting satellite) tuner, the scrambled signal received by a BS antenna and converter 1 is supplied... |
| 5412724 |
Method of making up a digital multiplex, and apparatus implementing said method |
| May-2-1995 |
The method is for generating a digital multiplex signal for broadcasting. The multiplex is made up of packets of determined length coming from a plurality of sources, by applying a treatment selected from... |
| 5406627 |
Digital data cryptographic system |
| Apr-11-1995 |
An audiovisual subscription system includes means for aperiodically inverting the lines of a transmitted video signal on a frame-by-frame basis and for decrypting encrypted PCM audio information which... |
| 5406625 |
Receiving apparatus and recording method |
| Apr-11-1995 |
A determination is made whether recording by a recording apparatus is or is not feasible. This determination is made on the basis of whether or not scrambled reception signals can be descrambled. Recording... |
| 5392352 |
Scramble detecting circuit in a satellite broadcasting receiver and scramble detecting method |
| Feb-21-1995 |
In a satellite broadcasting receiver for receiving and decoding pulse code modulation (PCM) audio frame data having a plurality of channels, the logical state of charged flags (FD) included in the data... |
| 5373557 |
System for processing user access control data at a decoder |
| Dec-13-1994 |
A subscriber/user TV system operates in response to locally stored entitlements. A user gains access to a program only if the description of the program is consistent with entitled rights owned by the... |
| 5367571 |
Subscriber terminal with plug in expansion card |
| Nov-22-1994 |
A subscriber terminal with a plug-in expansion card provides for memory expansion and security renewal. The subscriber terminal has a memory control bus including data, address, and control lines which... |
| 5343528 |
Procedure and decoder for decrypting a coded video signal |
| Aug-30-1994 |
A procedure and a decoder for decrypting the encryption of a coded video signal at a given point of time, in which the decoder (1) is tuned to a given receive channel for a given point of time using the... |
| 5329590 |
Automatic pay-per-view reception in a satellite receiver |
| Jul-12-1994 |
An automated pay-per-view activation method is disclosed for use in integrated television receive-only satellite receiver/descramblers. The automated procedure allows for automatic activation of the pay-per-view... |
| 5303295 |
Enhanced versatility of a program control by a combination of technologies |
| Apr-12-1994 |
A program control system for controlling access to premium programming and/or premium channels comprises a program control apparatus which may incorporate one or more subscriber modules. The subscriber... |
| 5301245 |
System for transmitting a commercial program in a CATV system |
| Apr-5-1994 |
A CATV system includes a broadcasting station, a satellite, and a local center. Scrambled television signals transmitted from the broadcasting station to the local center through the satellite are descrambled... |
| 5297204 |
VCR with cable tuner control |
| Mar-22-1994 |
A single remote control transmitter can advantageously control three units including a cable tuner/descrambler, a video recorder/player and a television receiver. One of these three units, preferably the... |
