| 7043020 |
Smartcard for use with a receiver of encrypted broadcast signals, and receiver |
| May-9-2006 |
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 microprocessor... |
| 7043019 |
Copy protection for digital motion picture image data |
| May-9-2006 |
An apparatus and method for displaying a copy-deterrent pattern (104) within a digital motion picture in order to discourage recording of the motion picture using a video camera or other sampling recording... |
| 7023992 |
Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device |
| Apr-4-2006 |
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 packets,... |
| 7000106 |
Methods and apparatus for kernel mode encryption of computer telephony |
| Feb-14-2006 |
Disclosed is a computer-readable medium containing program instructions for configuring a first computer so that a first telephony client on the first computer may securely communicate with a second telephony... |
| 6996236 |
Methods and apparatus for protecting signals transmitted between a source and destination device over multiple signal lines |
| Feb-7-2006 |
Methods and apparatus for protecting copyrighted information, e.g., video signals, from unauthorized use are described. Encrypted video signals are transmitted from a source device, e.g., display adapter,... |
| 6983050 |
Methods and apparatus for protecting information content |
| Jan-3-2006 |
Methods and apparatus for protecting copyrighted information, e.g., video signals, from unauthorized coping. Analog red (R), green (G) and blue (B) video signals are transmitted from a source device, e.g.,... |
| 6980652 |
Combination mastered and writeable medium and use in electronic internet appliance |
| Dec-27-2005 |
An optical medium uses a single structure or format (such as identical materials, layers and the like) for both a region for holding mastered data and a writeable area. In one aspect, a writeable region... |
| 6976010 |
Method for syndicating online content |
| Dec-13-2005 |
A method and system for making available syndicated content on-line from a variety of content providers while enforcing the exclusivity requirements for each of the content providers. The method prevents... |
| 6971012 |
Motion picture electronic watermark system |
| Nov-29-2005 |
To provide an electronic watermark method and system for which the detection reliability of embedded information does not depend on the strength of signals that are measured in frames. To achieve the above... |
| 6968058 |
Digital evidential camera system for generating alteration detection data using built-in encryption key |
| Nov-22-2005 |
A digital evidential camera system is for detecting the alteration of image data obtained by photographing an object. The system comprises the camera and an alteration detection unit. The camera includes... |
| 6947562 |
Electronic watermark detecting/inserting device |
| Sep-20-2005 |
In an electronic watermark detecting/inserting device which includes an electronic watermark detecting section (30) for detecting a first electronic watermark from a first DCT coefficient of an input... |
| 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... |
| 6907124 |
Optical encryption and decryption method and system |
| Jun-14-2005 |
The invention relates to securing of information utilising optical imaging technologies and more specifically to phase encryption and decryption of images. An image is encrypted into a mask having a plurality... |
| 6871180 |
Decoding of information in audio signals |
| Mar-22-2005 |
Systems and methods are provided for decoding a message symbol in an audio signal. This message symbol is represented by first and second code symbols displaced in time. Values representing the code signals... |
| 6836549 |
Method and apparatus for synthesizing and reducing the effects of video copy protection signals |
| Dec-28-2004 |
A method and apparatus for defeating copy protection signals in a video signal, and also for providing copy protection signals for a video signal, is disclosed. The defeat technique generally utilizes... |
| 6819765 |
Video-signal output apparatus, video-signal input apparatus, and scramble method, and descramble method |
| Nov-16-2004 |
A system, which includes a video-signal output apparatus and a video-signal input apparatus, has a construction in which scrambling or descrambling is performed with a scramble key generated using copy-control... |
| 6754347 |
Input/output unit, input/output method, and receiving unit |
| Jun-22-2004 |
A switching portion of an IRD supplies a non-descrambled TS (transport stream) received from a front end portion or a descrambled TS received from a descrambler to a DVCR connected to an IEEE 1394 interface.... |
| 6725374 |
Method for the execution of an encryption program for the encryption of data in a microprocessor-based portable data carrier |
| Apr-20-2004 |
A method for the execution of an encryption program for the encryption of data in a microprocessor-based portable data carrier is described, with the encryption program comprising several parallelisationable... |
| 6674874 |
Data processing apparatus and method and storage medium |
| Jan-6-2004 |
It is an object to provide a digital watermark embedding technique for integratedly managing a plurality of kinds of contents such as still images, motion images, audio sound, and the like. To accomplish... |
| 6618484 |
Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels |
| Sep-9-2003 |
Electronic steganographic techniques can be used to encode a rights management control signal onto an information signal carried over an insecure communications channel. Steganographic techniques ensure... |
| 6574338 |
Information delivery system and method |
| Jun-3-2003 |
A satellite-based digital broadcast system is used to provide real-time news, entertainment and informational programs to aircraft passengers in flight. Transmissions from the satellite occur on a time... |
| 6570990 |
Method of protecting high definition video signal |
| May-27-2003 |
A system controls reproduction of a video transmission between a transmitter and a receiver. The system includes an encryptor with an offset generator adapted to receive the encrypted frame key and to... |
| 6529600 |
Method and device for preventing piracy of video material from theater screens |
| Mar-4-2003 |
A method and device for preventing video tape piracy of video material shown by an electronic projector by varying frequently the frame rate, line rate or pixel rate of the projector. In a preferred embodiment... |
| 6459794 |
Process for scrambling and process for descrambling digital video data and devices implementing the processes |
| Oct-1-2002 |
The invention relates to a process for scrambling video data in the MPEG2 video format as well as to a process for descrambling data scrambled according to the process of the invention. The scrambled video... |
| 6449367 |
Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels |
| Sep-10-2002 |
Electronic steganographic techniques can be used to encode a rights management control signal onto an information signal carried over an insecure communications channel. Steganographic techniques ensure... |
| 6408076 |
Digital video broadcasting |
| Jun-18-2002 |
In order to descramble sections of scrambled data interleaved with sections of unscrambled data in a transport stream of broadcast video data, while leaving the sections with the original timing relationship... |
| 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... |
| 6385317 |
Method for providing a secure communication between two devices and application of this method |
| May-7-2002 |
In a method for providing a secure communication between two devices, a first device generates a random key (Ci) and transfers this key to a second device in a first message encrypted using a public key.... |
| 6345100 |
Robust watermark method and apparatus for digital signals |
| Feb-5-2002 |
Watermark data is encoded in a digitized signal by forming a noise threshold spectrum which represents a maximum amount of imperceptible noise, spread-spectrum chipping the noise threshold spectrum with... |
| 6330333 |
Cryptographic system for wireless communications |
| Dec-11-2001 |
A wireless communications system (110) with increased privacy. The system (110) transmits an encrypted signal between a base station (112) and a wireless terminal (122). In the forward channel, the base... |
| 6320965 |
Secure watermark method and apparatus for digital signals |
| Nov-20-2001 |
Watermark data is encoded in a digitized signal by forming a noise threshold spectrum which represents a maximum amount of imperceptible noise, spread-spectrum chipping the noise threshold spectrum with... |
| 6272222 |
Method of and apparatus for manipulating digital data works |
| Aug-7-2001 |
A method of hiding copyright related messages within digital data works is taught. The method relies on modifying data elements in the work according to certain rules which depend on the actual message... |
| 6240185 |
Steganographic techniques for securely delivering electronic digital rights management control information over insecure communication channels |
| May-29-2001 |
Electronic steganographic techniques can be used to encode a rights management control signal onto an information signal carried over an insecure communications channel. Steganographic techniques ensure... |
| 6208737 |
Method and apparatus for television signal scrambling using the replacement of synchronizing and color subcarrier signals with an alternative time base inherent in a QPSK audio subcarrier |
| Mar-27-2001 |
A novel method and apparatus for scrambling a television signal includes using a synchronization separator to separate a synchronization signal from an input audio-visual signal. The synchronization signal... |
| 6175628 |
Method and system for broadcasting/distributing digital audio and video to a television |
| Jan-16-2001 |
An audio input interface (122) receives a digital audio signal and identifies an audio bitstream which is optionally decrypted by a decryption unit (123), and decoded by an audio decoding unit (124). An... |
| 6145081 |
Method and apparatus for preventing removal of embedded information in cover signals |
| Nov-7-2000 |
Apparatus and methods are provided for embedding watermark information into a cover signal, such as an audio signal, video signal, or still image signal, in a manner that prevents the watermark information... |
| 6118872 |
Apparatus and method for controlling secret data by using positions of input image points on an image and a sequence of the positions |
| Sep-12-2000 |
A secret data management apparatus includes an image display unit which displays an image on a display monitor. A position/sequence input unit inputs positions of input image points on the image using... |
| 6104814 |
Method and apparatus for jamming different television channels using an oscillator circuit oscillating at different frequency bands |
| Aug-15-2000 |
In a system for jamming television programs in a cable television system, modified oscillators are used to provide jamming signals to control ports where they are added to the video signal, in order to... |
| 6104812 |
Anti-counterfeiting method and apparatus using digital screening |
| Aug-15-2000 |
An apparatus and process for hiding the secondary image within the primary image and generating a high quality hard copy of the unified elemental image of a variety of media. The process comprises the... |
| 6091822 |
Method and apparatus for recording scrambled video audio signals and playing back said video signal, descrambled, within a secure environment |
| Jul-18-2000 |
A technique is disclosed for preventing unauthorized playback of scrambled video/audio signals recorded on, for example, a video tape cassette, which technique includes several cooperating processes and... |
| 6002773 |
Method and apparatus for encryption |
| Dec-14-1999 |
A method and apparatus of encrypting optical images and storing these images in memory using random phase encoding is presented. The encryption technique uses random phase encoding in both the input plane... |
| 5970140 |
Modular error embedding |
| Oct-19-1999 |
A method of embedding auxiliary information into the digital representation of host data containing noise in the low-order bits. The method applies to digital data representing analog signals, for example... |
| 5953418 |
Providing selective data broadcast receiver addressability |
| Sep-14-1999 |
A method of transmitting data to a plurality of receivers is provided wherein an identifier is assigned to each of the receivers that cannot be ascertained once assigned, a subset of receivers is selected... |
| 5699104 |
Broadcast channel lock system |
| Dec-16-1997 |
A broadcasting channel lock system including a broadcasting device for transmitting a broadcasting signal via one or more of a plurality of channels, and a receiving device for receiving the broadcasting... |
| 5671278 |
Video scrambling with variable function generator |
| Sep-23-1997 |
A video scrambling and descrambling arrangement utilizes plural scrambling characteristics including a predetermined scrambling waveform and a selectable one of a plurality of phase relationships with... |
| 5617475 |
Scrambling and descrambling of video signals using horizontal line combinations |
| Apr-1-1997 |
A plurality of video lines in a raster scan video image are scrambled by delaying a first video line in time equal to the horizontal line scan time for the raster scan video field to produce a delayed... |
| 5604528 |
Method and apparatus for providing periodic subscription television services |
| Feb-18-1997 |
A method and apparatus for providing periodic subscription television services comprises a way for subscribers who cannot afford the fees for full time television services such as a regular cable television... |
| 5361301 |
Interdiction method and apparatus with direct memory control of variable frequency elements |
| Nov-1-1994 |
An off-premises method and apparatus for the interdiction of unauthorized channels of a broadband cable television signal includes common circuitry for adjusting the amplitude and equalization levels of... |
| 5345504 |
Differential compensation control for off-premises CATV system |
| Sep-6-1994 |
A off-premises CATV system includes a compensation control including a picture carrier controlled automatic gain control and an automatic slope control. A broadband television signal output from a variable... |
| 5319708 |
System for the simultaneous coding of a number of television signals and for decoding thereof in radiofrequency |
| Jun-7-1994 |
A system for the simultaneous coding of a number of television signals and for decoding thereof in radiofrequency. The radiofrequency TV signal or signals to be distributed undergo remodulation on at least... |
