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The Quarterly Review ; March edition, 1825
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| Number | Title | Issue Date |
| 8176568 | Tracing traitor coalitions and preventing piracy of digital content in a broadcast encryption system A system, method, and computer program product to find coalitions of receivers who collude to produce pirated protected content, then evaluates the confidence that particular members of each identified coalition are traitors versus innocent receivers incriminated by... | 05/08/2012 |
| 8171567 | Authentication method and system The present invention provides a method and apparatus for the production and labeling of objects in a manner suitable for the prevention and detection of counterfeiting. Thus, the system incorporates a variety of features that make unauthorized reproduction difficul... | 05/01/2012 |
| 8112818 | System for identifying content of digital data A system for identifying a work represented by digital data. This system detects events in data of the content of an unknown work and measures a metric between the events. The system then compares the detected events and metrics from an unknown work with the events ... | 02/07/2012 |
| 8099790 | Optical disk replay device A replay device includes a flash memory, a setting means, and a test result output unit. A device key for copyright protection is recorded in the flash memory. When a predetermined actuation input is received, the setting means sets the device to a test mode in whic... | 01/17/2012 |
| 8079092 | Electro-mechanical system for non-duplication of software A system consisting of a memory storage unit in which the licensed softwares are stored. The function of this device is to recognize the requested data and thereby allow the software from the memory storage unit according to the instructions set to this device. It i... | 12/13/2011 |
| 8051492 | System and method for tracing tardos fingerprint codes A system and method is provided for identifying the source of an unauthorized copy of content. The method includes embedding a unique user fingerprint code to into each of a plurality of authorized copies of content and identifying an unknown fingerprint code in an ... | 11/01/2011 |
| 8046841 | Steganographic method and device An apparatus and method for encoding and decoding additional information into a stream of digitized samples in an integral manner. The information is encoded using special keys. The information is contained in the samples, not prepended or appended to the sample str... | 10/25/2011 |
| 8015162 | Detecting duplicate and near-duplicate files Near-duplicate documents may be identified by processing an accepted set of documents to determine a first set of near-duplicate documents using a first technique, and processing the first set to determine a second set of near-duplicate documents using a second tech... | 09/06/2011 |
| 8006314 | System for identifying content of digital data A system for identifying a work represented by digital data. This system detects events in data of the content of an unknown work and measures a metric between the events. The system then compares the detected events and metrics from an unknown work with the events ... | 08/23/2011 |
| 8006313 | Non-machine specific optical-media based copy protection A method of preventing use of an illegally copied optical medium comprises the step of identifying the media type of the optical medium to determine whether the optical medium is an original version or an unauthorized copy. If the media type indicates that the optic... | 08/23/2011 |
| 7975313 | System and method for tracing Tardos fingerprint codes A system and method is provided for identifying the source of an unauthorized copy of content. The method includes embedding a unique user fingerprint code to into each of a plurality of authorized copies of content and identifying an unknown fingerprint code in an ... | 07/05/2011 |
| 7954164 | Method of copy detection and protection using non-standard TOC entries The invention relates to a method of copy detection of a record carrier. In one particular embodiment the table of content entries are mastered on the record carrier in a detectable non-standard way, e.g. the sequence of table of content entries is mixed or the numb... | 05/31/2011 |
| 7814564 | Method for fingerprinting multimedia content To identify participants in collusion directed to altering a digital fingerprint embedded in multimedia content, an ECC based fingerprinting technique establishes a code symbol for each of a plurality of segments of digital data forming the multimedia content. The c... | 10/12/2010 |
| 7793354 | System, method, and computer program for verifying data on information recording medium The present invention relates to a system for verifying data recorded on an information recording medium. The system includes a data reproduction unit for reproducing data recorded on an information recording medium, a reproduction-verification-data generation unit ... | 09/07/2010 |
| 7761927 | Apparatus and method for monitoring and controlling access to data on a computer readable medium The invention provides a device driver for monitoring and controlling access to data on a computer readable medium. The device driver comprises an interface for access to a device-driver stack for a media drive, a detector for detecting the insertion of a computer r... | 07/20/2010 |
| 7748050 | Optical disc, illegal copy finding system and method using optical disc, optical disc manufacturing apparatus and optical disc manufacturing method An optical disc manufacturing apparatus (46) recording a BCA code constituted by plural marks and including a secret code which is modulated in a range capable of recognizing a position in a radial direction of an optical disc and/or a position in a track dir... | 06/29/2010 |
| 7748051 | Contents server, contents receiving apparatus and network system for adding information to digital contents Method and system for embedding a unique and different digital watermark in digital contents for each access without increasing the overhear or load at the contents server. The contents server has a digital watermark-embedded contents storage unit for storing a plur... | 06/29/2010 |
| 7653947 | Image forming system, image forming apparatus, control method therefor and program implementing the control method An image forming system which is capable of enhancing security in an i-copy function. A server apparatus stores document data once having been printed in association with a sheet identifier recorded on a print sheet on which the document data has been printed. An im... | 01/26/2010 |
| 7650646 | Information-recording apparatus, information reproduction apparatus, information-recording method, information reproduction method and computer program A recording or reproduction apparatus is provided which utilizes copyright information in operations to record content data onto a recording medium or reproduce content data from the recording medium. Copyright information for the contents includes information ident... | 01/19/2010 |
| 7644446 | Encryption and data-protection for content on portable medium A source generates a medium key (KM) and a media secret table including a plurality of entries, each entry including (KM) encrypted by a public key (PU-PD) of a plurality of devices, obtains the medium ID of a medium therefrom, generates a content key (KD) for a pie... | 01/05/2010 |
| 7627907 | Display device preventing unauthorized copying The present invention is adapted to make all the pixels of electrophoretic display 17 white (step S103) when light no longer incomes on the face of electrophoretic display 17 (“Yes” at step S102) . When someone places the face of elec... | 12/01/2009 |
| 7578002 | Controlling interaction of deliverable electronic media A method of restricting client interaction of deliverable electronic media. In one embodiment, the method is comprised of detecting a media player application operable within a computer system. The media player application enables the computer system to present cont... | 08/18/2009 |
| 7549176 | Recording medium, information playback apparatus and method, and information recording and playback apparatus In a CD-DA, encoded content in which audio information is encoded using a content key, the content key, and two usage right files are recorded in predetermined regions. The usage right files are a CD-DA usage right file having CD-DA usage rights, and a CD-R usage ri... | 06/16/2009 |
| 7523507 | Delivery of non-permanent media files to a mobile station A media file content provider 30 sends a non-permanent copy of a media file, such as a music or video file, to a second mobile station MS 34 in response to a request from a first MS 22. The copy may be rendered non-permanent by streaming it, by ... | 04/21/2009 |
| 7512991 | Methods, systems, signals and media for encouraging users of computer readable content to register A method and system for encouraging users of computer readable content to register. The method involves embedding in the computer readable content, instruction codes operable to direct a processor circuit to automatically establish a connection to a server, when the... | 03/31/2009 |
| 7503077 | Method, storage medium, and apparatus to prevent use or distribution of unauthorized copies of storage medium contents The present invention provides an information storage medium and a method and apparatus for processing information, which manage information storage media so as to prevent unauthorized copies of contents from being distributed or used. On an information storage medi... | 03/10/2009 |
| 7469422 | Contents server, contents receiving method for adding information to digital contents Method for embedding a unique and different digital watermark in digital contents for each access without increasing the overhead or load at the contents server. The contents server has a digital watermark-embedded contents storage unit for storing a plurality of di... | 12/23/2008 |
| 7444682 | Security memory device and method for making same A security memory device includes a memory cell array that stores a plurality of contents, including a mine, which is stored as a portion of the plurality of contents. The mine is triggered when it is accessed, typically such that the mine erases the memory contents... | 10/28/2008 |
| 7434267 | Method of preventing reduction of sales amount of records due to a digital music file illegally distributed through communication network A method of preventing reduction of sales amount of records due to a digital music file illegally distributed through a communication network is disclosed. The method comprises a)collecting an illegally produced digital music file, which is derived from a record of ... | 10/07/2008 |
| 7434058 | Generating signatures over a document A document accessible over a network can be registered. A registered document, and the content contained therein, cannot be transmitted undetected over and off of the network. In one embodiment, the invention includes maintaining a plurality of stored signatures ove... | 10/07/2008 |
| 7424747 | Method and system for detecting pirated content A content player can detect pirated content by storing a list of highly compressed content pieces that correspond to different pieces of content (e.g., audio content, video content, audio/video content, etc.). A piece of content to be played back by the content play... | 09/09/2008 |
| 7421742 | Signal processing system, recording method, program, recording medium, reproduction device and information processing device A signal processing system includes a reproducing apparatus for reading information from a recording medium having unique information and an information processing apparatus for mutually authenticating and connecting the reproducing apparatus. The reproducing appara... | 09/02/2008 |
| 7421579 | Multiplexing a secure counter to implement second level secure counters A multiplexed secure counter is provided, in which a multiplicity of child secure counters are secured by a parent secure counter. Child counters are stored with a parent secure counter value and a signature. Before a child counter is read, the signature is verified... | 09/02/2008 |
| 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 |
| 7406593 | Method and apparatus for protecting information and privacy A system for protecting software against piracy while protecting a user's privacy enables enhancements to the protection software in a user device and extended protections against piracy. The protection system allows the user device to postpone validation of purchas... | 07/29/2008 |
| 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 |
| 7370205 | Content distribution system, content distribution method and terminal device A content distribution system, a content distribution method and a terminal device are capable of effectively preventing disadvantages of users who formally bought content. In the content system in which a distribution server and a terminal device are connected thro... | 05/06/2008 |
| 7366908 | Digital watermarking with content dependent keys and autocorrelation properties for synchronization A digital watermark detection method exploits autocorrelation properties of the watermarked signal that enable synchronization of the digital watermark despite temporal or geometric distortion of the host signal. Other watermark methods employ keys, including a key ... | 04/29/2008 |
| 7363507 | Device and method of preventing pirated copies of computer programs A device and a method of preventing pirated copies of computer programs. The device has input and output devices for bidirectional data exchange with an electronic computer and a first memory element containing a data file that can be transferred to the electronic c... | 04/22/2008 |
| 7359883 | License management system, license management device, relay device and terminal device A management device of a license management system acquires a usage request of a content from an SD card or a printer via a relay device, analyzes the acquired usage request, acquires usage environment information of the SD card or the printer from the relay device,... | 04/15/2008 |
