Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7545937 | Chrominance processing arrangement having immunity to colorstripe encoding A video system (100) includes a chrominance processing arrangement (200). The chrominance processing arrangement (200) includes a burst accumulator (240) operative to detect a polarity inversion within a burst interval associated with a h... | 06/09/2009 |
| 7400727 | Information embedding method, information extracting method, information embedding apparatus, information extracting apparatus, and recording media An apparatus for embedding secret information in an image signal transmitted with a shape signal showing the shape of an object is described. This apparatus comprises an embedding position decision unit for deciding a position in the object where the secret informat... | 07/15/2008 |
| 7398540 | System and method for tuning channels using a central point of control Systems and methods for tuning channels within a home entertain system by connecting multiple consumer electronics devices to a central electronics device with an internal tuner. The consumer electronics devices are connected in a hub and spoke configuration, with e... | 07/08/2008 |
| 7362861 | Methods and apparatus for protecting information content Methods and apparatus for protecting copyrighted information, e.g., video signals, from unauthorized copying. Analog red (R), green (G) and blue (B) video signals are transmitted from a source device, e.g., a display adapter, to a display device, e.g., a monitor, ov... | 04/22/2008 |
| 7356051 | Digital visual interface with audio and auxiliary data cross reference to related applications One embodiment of the present invention uses an abbreviated blanking period, in comparison to the standard VESA and CEA-EIA blanking periods, in order to send data, including low bandwidth, non-timing information, over one or more channels of the digital video link.... | 04/08/2008 |
| 7319755 | Image altering apparatus and method for providing confidential viewing of a fundamental display image An image altering apparatus which provides confidential viewing of a video display by means of time multiplexing the fundamental display image with a color-inverted image thereof on a pixel-by-pixel basis. Electronic circuitry and/or software are utilized to modify ... | 01/15/2008 |
| 7290148 | Encryption and decryption communication semiconductor device and recording/reproducing apparatus Disclosed herein is an encryption and decryption communication semiconductor device comprising at least, a communication interface for performing a transfer of data according to a predetermined communication system, one or two or more encryption/decryption circuits ... | 10/30/2007 |
| 7286668 | Method of protecting copyright of digital video work This invention discloses a method of protecting copyright of a digital video work by using a digital password technology and a digital watermark technology to prevent the unauthorized use of a digital video work. Such method adds password protection of two chrominan... | 10/23/2007 |
| 7276943 | Highly configurable PLL architecture for programmable logic A programmable logic device includes configurable phase-locked loop (PLL) circuitry that outputs multiple clock signals having programmable phases and frequencies. Each output signal is programmably selectable for use as an external clock, internal global clock, int... | 10/02/2007 |
| 7274790 | Scrambling and descrambling a high definition TV signal Method and apparatus for scrambling a high definition television signal to discourage unauthorized recording of same. While recording per se is not prevented, the resulting recorded signal is rendered unusable due to an induced “wobble” between the active video ... | 09/25/2007 |
| 7236683 | Method and apparatus for providing or enhancing copy protection by adding selected negative-going and positive-going pulses in a video signal HBI The horizontal blanking interval (HBI) of a normal video signal is modified to enhance the playability of the applied copy protected video signal while maintaining the copy protection effectiveness. As generally known, a copy protected video signal with positive-goi... | 06/26/2007 |
| 7224798 | Methods and apparatus for providing a partial dual-encrypted stream in a conditional access overlay system The present invention is directed towards providing a partial dual-encrypted stream in a conditional access overlay system. The headend equipment includes an aligner, identifier, and remapper (AIR) device (615) that receives a clear stream and one or two encr... | 05/29/2007 |
| 7221761 | Error resilient digital video scrambling A method and an apparatus for error resilient, digital image scrambling are disclosed. Error resilience scrambling is produced by shuffling transform coefficients between arrays of coefficients arranged along an axis substantially orthogonal to the axis along which ... | 05/22/2007 |
| 7212635 | Image processing apparatus, control method thereof, and image processing system An image processing apparatus for encrypting a profile for color matching, generates a table which stores change information of the profile, changes data in the profile on the basis of the generated table, and encrypts the table by a predetermined algorithm. ... | 05/01/2007 |
| 7209560 | Data communications In a data communications system a remote data source outputs data as a series of application data units (ADUs). Each ADU is individually encrypted with a different key. The keys are transmitted (for example using Internet multicasting) via a communications network t... | 04/24/2007 |
| 7137010 | Method for obtaining a solution of an optimization problem Method of acquiring solution of an optimization problem, whereby information of problem and its solution is not delivered to solving system when requesting solving system to solve, and it is also made unnecessary to send ciphering key. Problem and ciphering key are ... | 11/14/2006 |
| 7136485 | Packetizing devices for scalable data streaming A device and method thereof for packetizing scalably encoded data. The device can include a receiver adapted to receive a stream of data from an encoding device, wherein at least a first portion of the data is scalably encoded. The device can also include a packetiz... | 11/14/2006 |
| 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 string of bit values in an encrypted format from the video display to... | 09/26/2006 |
| 7098707 | Highly configurable PLL architecture for programmable logic A programmable logic device includes configurable phase-locked loop (PLL) circuitry that outputs multiple clock signals having programmable phases and frequencies. Each output signal is programmably selectable for use as an external clock, internal global clock, int... | 08/29/2006 |
| 7073200 | Method of providing secure content-based user experience enhancement within a content protection architecture Providing secure content-based user experience enhancement in a player device for rendering digital content includes accepting encrypted digital content, decrypting the encrypted digital content into decrypted digital content, downsampling the decrypted digital cont... | 07/04/2006 |
| 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 signal. The copy permission indicator is generated on the basis of cop... | 06/13/2006 |
| 7046818 | Standards compliant watermarking for access management Visible watermarking techniques for digital images and video operate on decoded transform coefficients and maintain the watermarked data in the same compressed format as the original so that the watermarked data can be viewed with standard tools and applications. Mo... | 05/16/2006 |
| 7047552 | Video apparatus having variable OSD graphic data and a method therefor A video apparatus having variable OSD (on-screen display) graphic data and a method therefor. The video apparatus receives or downloads OSD graphic data from an external OSD graphic data source, to enable a user to alter the OSD display data without having to store ... | 05/16/2006 |
| 7023993 | Signal reproducing/recording/transmitting method and apparatus and signal record medium for use with signals featuring a multiple-phase color burst A signal reproducing apparatus for prohibiting copying or unauthorized use. The apparatus includes a copying management information decision circuit 19 for discriminating the state of the copying management information read out from each header of a data sect... | 04/04/2006 |
| 7018045 | Image display apparatus and image display method An image display apparatus and method is disclosed that can prevent shot-sneaking of an image displayed by a projector apparatus. The projector apparatus embeds a display image portion in which the same color is represented with another color space of R, Cy, and B b... | 03/28/2006 |
| 7017075 | Recovering from video driver errors A host processor-based system may communicate with a video capture device. If an error occurs in connection with a device driver for the video capture device, software attempts to automatically recover the driver without necessitating rebooting of the host processor... | 03/21/2006 |
| 6996236 | Methods and apparatus for protecting signals transmitted between a source and destination device over multiple signal lines 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, to a display device, e.g., monitor, over analog signal lines ... | 02/07/2006 |
| 6983050 | Methods and apparatus for protecting information content 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., a display adapter, to a display device, e.g., a monitor, ove... | 01/03/2006 |
| 6925181 | Method of protecting high definition video signal 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 generate a sequence of pseudo-random values for the color compone... | 08/02/2005 |
| 6888943 | Multimedia adaptive scrambling system (MASS) A system (300, 500) for scrambling digital samples (115, 200, 250, 260, 270) of multimedia data, including audio and video data samples, such that the content of the samples is degraded but still recognizable, or otherwise provided at a desired quality... | 05/03/2005 |
| 6826281 | Storage-encryption-retrieval device and method with resulting business processes An encryption device includes a card with a grid comprising multiple rows and columns defining boxes for receiving individual characters. One of the columns or rows contains a master password or code character string. Other columns or rows contain encrypted characte... | 11/30/2004 |
| 6570990 | Method of protecting high definition video signal 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 generate a sequence, of pseudo-random values for the c... | 05/27/2003 |
| 6459795 | Method and apparatus for enhancing the scrambling of a TV signal via erroneous clamp signals An improved television scrambling signal is achieved by adding erroneous clamp pulses into a television signal after the signal may have been previously scrambled, for example, by prior art position modulated horizontal sync pulses. Prior art scrambling s... | 10/01/2002 |
| 6349139 | Method and apparatus for minimizing chroma subcarrier instability caused by a video line scrambling system In certain video scrambling systems, composite video is imperfectly separated into luminance and chrominance and scrambled in such a way that an unstable residual chroma color subcarrier remains in the luminance channel. When this unstable residual subcar... | 02/19/2002 |
| 6222978 | Video signal copy guard apparatus and method A video signal copy guard system in which a special color burst signal (or "copy prohibition signal") is inserted into the video signal to be copy protected so that the protected signal includes both a special color burst signal and a normal color burst s... | 04/24/2001 |
| 6212325 | Method and apparatus for processing video signal and storage medium A video signal processing apparatus, a video signal processing method and a recording medium are provided for reliably preventing illegal copy through a VTR and supplying a high-quality video signal with a copyright protecting function without interfering... | 04/03/2001 |
| 6091822 | Method and apparatus for recording scrambled video audio signals and playing back said video signal, descrambled, within a secure environment 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 apparatus which further prevent the playback of reco... | 07/18/2000 |
| 6021196 | Reference palette embedding A method of embedding auxiliary information into the digital representation of publication quality color-component digital data. The method applies to all digital data for which individual values are represented by discrete numerical values, and for which... | 02/01/2000 |
| 6018608 | Method of generating information used for the copy protecting signal and apparatus using the same A component of color difference signal is detected from a video component signal, and its color saturation information is compared with a predetermined threshold level, then in response to the comparison result, information is generated in order to contro... | 01/25/2000 |
| 5930360 | Method of scrambling three-dimensional image In a method of scrambling a three-dimensional image according to the present invention, the phase of a part of at least one of a left eye image and a right eye image constituting a three-dimensional image is shifted from the original phase in the horizont... | 07/27/1999 |
