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| Number | Title | Issue Date |
| RE43240 | Copy control for a video signal with copyright signals superimposed as predetermined bits in the VBID data of the video signal A video signal is processed to selectively permit copying by superposing in that portion of the video signal which does not contain useful picture information a copyright information signal indicative of whether the viewable picture that is displayed from the video ... | 03/13/2012 |
| 7907727 | System and method for allowing copying or distribution of a copy protected signal A copy protection system and method for allowing copying or distribution of a copy protected signal is disclosed. One embodiment includes an apparatus and method for receiving a media signal in which a copy protection signal is embedded, receiving a control signal, ... | 03/15/2011 |
| 7813504 | Protection of data on media recording disks This invention discloses a secure recording medium having at least one of audio, video and software content, comprising a plurality of media recording disks (DVD's) with a disk security chip embedded in each the DVD, each the disk chip comprising a security key, whe... | 10/12/2010 |
| 7792293 | Method and apparatus for modifying a subsequently generated control command in a content control system In record or content control management systems, various selected reference, record control, copy protection or control information signals, or other signifiers, are used to identify control signals, for example, bits, to provide control of subsequent use of data, a... | 09/07/2010 |
| 7778418 | System and method for copy protection for digital signals Embodiments of the present invention provide for the copy protection of distributed material after conditional access is applied, regardless of where the material is distributed. The solutions described provide the advantage of being sufficiently simple in implement... | 08/17/2010 |
| 7760877 | Protection of data on media recording disks This invention discloses a secure recording medium having at least one of audio, video and software content, comprising a plurality of media recording disks (DVD's) with a disk security chip embedded in each the DVD, each the disk chip comprising a security key, whe... | 07/20/2010 |
| 7729495 | System and method for detecting unauthorized copying of encrypted data A system and method is provided for detecting unauthorized actions with respect to encrypted data on a media disk, the media disk including a first portion for prerecorded content and a second portion for written content. The method includes reading an identifier on... | 06/01/2010 |
| 7720224 | System and method for the assertion and identification of rights information in an analog video signal A method for processing an analog video signal that represents a work for which rights information is asserted. The signal includes a rights assertion mark (RAM) in the video portion of the signal within the visible picture such that capture of the picture will incl... | 05/18/2010 |
| 7649993 | Video-signal processing system, video-signal processing apparatus and method, recording medium, and program The present invention relates to a video-signal processing system, a video-signal processing apparatus and method, a recording medium, and a program for immediately recovering from loss of synchronization while encrypting/decrypting a video signal. An encryption pro... | 01/19/2010 |
| 7639806 | Fingerprinting digital devices using electromagnetic characteristics of their communications Methods and apparatus or systems for providing security based on innate characteristics of devices are disclosed. A method of providing security associated with communications from a digital device includes observing an analog signal associated with communications f... | 12/29/2009 |
| 7636440 | Digital watermark with variable location A digital watermark in a data file occurs at multiple locations within the file. The location of each digital watermark, other than a first digital watermark, is specified by a previous digital watermark, or by other auxiliary information in a same logical block as ... | 12/22/2009 |
| 7627118 | Scanner device, scanner system and image protection method A scanner device that optically reads an image comprises a protect specification data detection unit that detects a protect specification data which is contained in the read image to request protection of image data of the image. A protected image data creation unit... | 12/01/2009 |
| 7606365 | Encryption/decryption system and key scheduler with variable key length A key scheduler, which may selectively generate an encryption round key and a decryption round key corresponding to an initial round key, which may have a variable key length. The key scheduler may include a key storage unit, a key calculating unit, and a key output... | 10/20/2009 |
| 7574004 | Image display method and image display processor A method and apparatus for directly and indirectly preventing illegal copying of works such as cinema or video images displayed on a display apparatus such as a theater screen or display unit. In particular, the method and apparatus prevents illegal copying of a dis... | 08/11/2009 |
| 7551738 | Separation of copy protection rules A copyright protection method and apparatus employ a first protection scheme within a single authorized domain, in which all interfaces are protected with digital rights management system, and employ a second protection scheme for use in inter-domain file transfers.... | 06/23/2009 |
| 7545936 | Method and device for incorporating additional information into main information through electronic watermarking technique Two data units are selected from main information, such as MIDI data, into which additional information is to be incorporated, to calculate a difference between respective values of the two data units. A particular data segment to be incorporated into one of the MID... | 06/09/2009 |
| 7519180 | Method and apparatus for copy protection Copy protection techniques that utilize a watermark and a permission key are disclosed. The copy protection techniques can provide single-copy copy protection in addition to different levels of copy protection. The permission key and the watermark can also permit th... | 04/14/2009 |
| 7454019 | System and method for controlling display of copy-never content A method and system for controlling the use of unauthorized content, and specifically for controlling the display of content that is marked as “copy-never.” A compliant signal source transmits a video signal along with a secure timestamp to a compliant display d... | 11/18/2008 |
| 7434265 | Information signal recording/reproducing system, information signal recording device, information signal reproducing device and information signal recording/reproducing process When digital image signals inputted through an inputting terminal are recorded on a disc, a medium-related information (a serial number in an TOC) of the disc, read from the disc, with a medium-related information reading section is spectrum-spread in an SS addition... | 10/07/2008 |
| 7428307 | Data reproduction apparatus capable of safely controlling reproduction time of encrypted content data and data reproduction circuit and data recording apparatus used for the same A decryption processing unit decrypts encrypted content data using a license key Kc. When an elapsed time after reception of the license key (Kc) does not exceed a hold time at a time of the license key (Kc) included in reproduction control information (ACp), reprod... | 09/23/2008 |
| 7426273 | Audio/video stream processing system and method for data copy protection An AV stream processing system includes an AV stream input unit which receives an AV stream having an AV content information field including first copy control information, and an AV content field including second copy control information, a determination unit which... | 09/16/2008 |
| 7421412 | Computerized method and system for monitoring use of a licensed digital good A method and system are provided for monitoring use of a licensed digital good, such as software, digital audio or video, text, and web pages. Each licensed digital good is associated with a shared resource, such as a record in a remote database in a license server.... | 09/02/2008 |
| 7415619 | Method and apparatus for recording and reproducing information on and from recording disc A recording disc has a lead-in area and a data area. A scrambled version of a SID code word is read out from the lead-in area of the disc. The SID code word represents a producer of the disc. The readout scrambled version is de-scrambled to recover the SID code word... | 08/19/2008 |
| 7412606 | Copy protection using detailed copy control information Based on the detailed reproduction control information defining the reproduction control state of data to be transmitted, the CPU 12 of the data transmission apparatus creates a simplified reproduction control information roughly defining the reproduction con... | 08/12/2008 |
| 7408859 | Method and apparatus for recording and reproducing information on and from recording disc A recording disc has a lead-in area and a data area. A scrambled version of a SID code word is read out from the lead-in area of the disc. The SID code word represents a producer of the disc. The readout scrambled version is de-scrambled to recover the SID code word... | 08/05/2008 |
| 7403617 | System and method for copy protection for digital signals Embodiments of the present invention provide for the copy protection of distributed material after conditional access is applied, regardless of where the material is distributed. The solutions described provide the advantage of being sufficiently simple in implement... | 07/22/2008 |
| 7400725 | Information recording medium for recording a scrambled part of content information, and method and apparatus for reproducing information recorded therein An information recording medium, such as an optical disk or the like, is provided for recording at least copyrighted content information and cipher key information. A part of the content information is scrambled and recorded in the information recording medium, and ... | 07/15/2008 |
| 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 |
| 7398008 | Copy protection for analog video signals from computing devices A copy protection method and apparatus is provided to inhibit unauthorized viewing or copying of a video signal. A varying set of additional or invalid video pulses are generated onto a typical video signal. A pulse sequence identifier identifies the location of the... | 07/08/2008 |
| 7397919 | Access control method and storage apparatus An access control method controls access to a storage medium in a storage apparatus, by obtaining key data valid information which indicates whether or not a key data is valid, and enciphering data to be recorded in the storage medium using the key data only when th... | 07/08/2008 |
| 7395545 | Method and apparatus for providing copy protection using a transmittal mode command A method and system of providing copy protection of video analog and digital signals and the like, wherein the signals are transmitted via a digital delivery network, and may comprise, for example, pay-per-view (PPV) program materials protected by copyrights of resp... | 07/01/2008 |
| 7391866 | Broadcast apparatus and reception apparatus for providing a storage service by which scrambled content is stored and descrambled using scrambling key list A reception apparatus includes: a reception unit for receiving the scrambled content, the scrambled content being scrambled so that a predetermined unit of scrambled content is descrambled using a descrambling key corresponding to the predetermined unit of scrambled... | 06/24/2008 |
| 7389428 | Data processing system, data processing method, and program providing medium The inventive data processing apparatus initially generates verifying values for verifying integrity of contents data stored in a memory device, then stores the verifying values in correspondence with contents data, and then, using the verifying values, the data pro... | 06/17/2008 |
| 7389272 | Information recording device and information reproducing device The information reproduction device for reproducing contents information based on license information added to the contents information and required for reproducing the contents information, includes a determining section for determining whether encrypted contents i... | 06/17/2008 |
| 7386127 | Protection of data on media recording disks This invention discloses a secure recording medium having at least one of audio, video and software content, comprising a plurality of media recording disks (DVD's) with a disk security chip embedded in each the DVD, each the disk chip comprising a security key, whe... | 06/10/2008 |
| 7386129 | System and method for multimedia content simulcast A computer-implemented method is described for processing multimedia channels comprising: encrypting a first group of multimedia channels using a first type of encryption to produce a first group of encrypted multimedia channels; encrypting the first group of multim... | 06/10/2008 |
| 7380120 | Secured data format for access control In a system for providing access control management to electronic data, techniques to secure the electronic data and keep the electronic data secured at all times are disclosed. According to one embodiment, a secured file or secured document includes two parts: an a... | 05/27/2008 |
| 7376243 | Apparatus and method for watermarking a digital image 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 data and time data pertaining to the displaying of the movin... | 05/20/2008 |
| 7372964 | Method and apparatus for recording information including secret information and method and apparatus for reproduction thereof An information recording method for recording content information in a recording medium having at least re-readable area, comprising converting, based on a first conversion rule φ1, first information including a first component for obtaining content control ... | 05/13/2008 |
| 7373506 | Data authentication system A data processing system, apparatus and method are provided to verify and validate data. Cryptographic processes employ keys to encrypt the data, check the data and prevent tampering with the data. The data may include header information such as compressed contents ... | 05/13/2008 |
