| Patent application number | Description | Published |
|---|
| 20080235517 | Update System for Cipher System - There is a demand for a device handling information with the use of encryption technology to safely and simply update the encryption schemes. The present invention offers an information security device having a plurality of encryption schemes and handling information safely and reliably, characterized by selecting one of the plurality of encryption schemes as an application encryption scheme and installing a different encryption scheme from the plurality of encryption schemes based on the application encryption scheme. | 09-25-2008 |
| 20080239909 | Recorder/Reproducer and Content Data Protection System - The recorder/reproducer ( | 10-02-2008 |
| 20080240673 | PLAYBACK APPARATUS, PLAYBACK METHOD, DISTRIBUTION SERVER, DISTRIBUTION METHOD, RECORDING MEDIUM AND INTEGRATED CIRCUIT - The present invention aims at providing a playback apparatus that performs playback control so as to prevent, in playback of content recorded on a recording medium, a decline of the value of the recording medium and content. | 10-02-2008 |
| 20080256639 | Verification Method, Information Processing Device, Recording Medium, Verification System, Certification Program, and Verification Program - A virtual machine can be implemented by anyone because the interface and other information necessary for implementation are publicly available. Hence, if virtual machine is implemented maliciously, a program operating thereon can be made to operate maliciously instead of operating legitimately. | 10-16-2008 |
| 20080260161 | Terminal Device and Copyright Protection System - To provide a terminal device with which, even if content that has undergone conversion is moved to another device, the content before the conversion can be used when moving the content from the device which is a move destination of the content back to a move source of the content. The terminal device stores the content in advance, applies an irreversible conversion which causes a decrease in quality to the content to generate converted content, and writes the converted content to a storage medium. The terminal device encrypts a block in the content using an encryption key to generate an encrypted block, replaces the block in the content with the encrypted block, and writes the encryption key to the storage medium. | 10-23-2008 |
| 20080310628 | Backup Management Device, Backup Management Method, Computer Program, Recording Medium, Integrated Circuit, and Backup System - To provide a backup management device that deletes a content so as to be restorable in the future while protecting a copyright of the content, in a case where there exists a backup of the content. In an HD recorder | 12-18-2008 |
| 20090013193 | Circuit Building Device - The present invention provides an apparatus for securely acquiring a circuit configuration information set corresponding to a new cryptosystem without increasing the number of reconfigurable circuits. A content playback apparatus | 01-08-2009 |
| 20090024849 | Information acquisition device, information acquisition method, and information acquisition program - Conventionally, before reading content from a recording medium, a drive device and a playback device that plays back content perform device authentication, in order to verify whether the playback device is authorized or not. Once the playback device has been verified as authorized, the playback device is permitted to read any content stored on the recording medium. In view of this, a reading device is provided that limits a type of content acquirable by the playback device by permitting the playback device to read content which satisfies a specific condition and prohibiting the playback device to read other content. | 01-22-2009 |
| 20090055638 | Algorithm update system - A design data storage unit stores a plurality of pieces of design data. A judgment unit | 02-26-2009 |
| 20090067632 | Circuit updating system - An information processing apparatus is provided with a reconfigurable unit ( | 03-12-2009 |
| 20090245053 | RECORDING MEDIUM, DATA RECORDING APPARATUS, DATA REPRODUCING APPARATUS AND DATA RECORDING METHOD - Provided is a new-type recordable DVD medium characterized in having medium characteristics not defined in the DVD-R standards and-having compatibility with the DVD-ROM standards. Since information on the new-type recordable DVD medium can be played back by an existing player, even when content data protected by CSS (Content Scrambling System) is recorded on the new-type recordable DVD medium, the recordable DVD medium can be used for content distribution service using a kiosk terminal. | 10-01-2009 |
| 20100002871 | DEVICE PROVIDED WITH REWRITABLE CIRCUIT, UPDATING SYSTEM, UPDATING METHOD, UPDATING PROGRAM AND INTEGRATED CIRCUIT - A problem to be solved is that a conventional device is not equipped with a unit that enables efficient circuit update taking into consideration an unconfigured area in the reconfigurable circuit in the device. A data using device | 01-07-2010 |
| 20100034513 | INFORMATION BURYING DEVICE AND DETECTING DEVICE - The present invention provides an information embedding apparatus that is capable of preventing playback stop of a content that has been shot without intention of misuse. The information embedding apparatus comprises: an acquisition unit operable to acquire the content that is played back along the playback time-line; a watermark generating unit operable to generate the watermarks such that values held by the watermarks vary according to a first rule, the first rule showing that the values should vary according to a sequential order on the playback time-line; and an embedding unit operable to embed two or more of the watermarks into the content while keeping the sequential order. | 02-11-2010 |
| 20100058487 | COPYRIGHT PROTECTION DATA PROCESSING SYSTEM AND REPRODUCTION DEVICE - If playback devices are prohibited from playing back contents recorded in R media, there occurs a problem that it takes more time to manufacture commercial ROM media. Conversely, if playback devices are permitted to play back contents recorded in R media, there occurs a problem that copyrights might be infringed. In view of these, the aim of the present invention is to provide a content protection data processing system and a playback device capable of determine whether to permit playback of a content recorded in a recording medium, based on a medium type of the recording medium and a signature type of a signature attached to a program. This enables both the protection of the copyright of the content and the efficient manufacturing of commercial ROM media. | 03-04-2010 |
| 20100100969 | COPYRIGHT PROTECTION DATA PROCESSING SYSTEM AND REPRODUCTION DEVICE - If playback devices are prohibited from playing back contents recorded in R media, there occurs a problem that it takes more time to manufacture commercial ROM media. Conversely, if playback devices are permitted to play back contents recorded in R media, there occurs a problem that copyrights might be infringed. In view of these, the aim of the present invention is to provide a content protection data processing system and a playback device capable of determining whether to permit playback of a content recorded in a recording medium, based on a medium type of the recording medium and a signature type of a signature attached to a program, and switching a procedure relating to a digital signature for each signature type of the digital signature. This enables both the protection of the copyright of the content and the efficient manufacturing of commercial ROM media. | 04-22-2010 |
| 20100118675 | RECORDING AND REPRODUCTION APPARATUS, REPRODUCTION APPARATUS, AND HOST APPARATUS - It is an object of the present invention to provide a universal drive capable of recording and reproducing high-image quality contents on and from various media, such as BD, HD-DVD, DVD and others according to the AACS. The drive ( | 05-13-2010 |
| 20100122079 | COPYRIGHT PROTECTION SYSTEM, REPRODUCTION APPARATUS AND METHOD - The object of the present invention is to provide a reproduction apparatus that is capable of preventing personal information of users from being transmitted to an external apparatus that is under management of a malicious person. | 05-13-2010 |
| 20100223477 | CONTENT REPRODUCING DEVICE, CONTENT REPRODUCING METHOD, RECORDING MEDIUM, AND INTEGRATED CIRCUIT - A content playback apparatus (digital watermark detection apparatus) comprises: a detection unit operable to detect a digital watermark from audio data having a plurality of blocks, the audio data being contained in a content which is to be played back along a playback time-line; a detected block storage unit for storing therein information indicating a block in which the digital watermark has been detected by the detection unit; and a playback control unit operable to play back all data contained in the content other than audio data corresponding to the block indicated by the information stored in the detected block storage unit. This makes it possible, even when audio data containing copyright information is inadvertently recorded on a camcorder, to prevent the audio data containing the copyright information from being played back, thereby enabling users to view the content without the influence of playback control. | 09-02-2010 |
| 20100247077 | CONTENT USE DEVICE AND RECORDING MEDIUM - To provide a content playback device that can use content appropriately by avoiding output of content not permitted to be used according to contract information. A playback control unit | 09-30-2010 |
| 20100281263 | RECORDING DEVICE, SERVER DEVICE, RECORDING METHOD, RECORDING MEDIUM WITH COMPUTER PROGRAM RECORDED THEREIN AND INTEGRATED CIRCUIT - A recording device for recording one or more of a plurality of subcontents recorded on a first recording medium, onto a second recording medium, the first recording medium having further recorded thereon digest values of the subcontents, and a medium signature generated based on the digest values of the subcontents, the plurality of subcontents constituting one content, the recording device comprising: a subcontent acquisition unit operable to select and acquire one or more of subcontents permitted to be copied; an excluded digest value acquisition unit operable to acquire excluded digest values from the first recording medium, the excluded digest values being digest values of nonselected subcontents; a signature acquisition unit operable to acquire the medium signature from the first recording medium; and a write unit operable to write, onto the second recording medium, (i) the one or more selected subcontents, (ii) the excluded digest values, and (iii) the medium signature. | 11-04-2010 |
| 20110093706 | ENCRYPTION DEVICE, KEY DISTRIBUTION DEVICE AND KEY DISTRIBUTION SYSTEM - A key distribution system distributes key data for using content to a second encryption device that has been legitimately outsourced processing by a first encryption device. The first encryption device acquires permission information indicating that the first encryption device has permission to use the content, generates certification information by making an irreversible alteration the to permission information, and transmits the permission information and the certification information to the second encryption device. The second encryption device receives the permission information and the certification information, sends them to a key distribution device, and acquires the key data from the key distribution device. The key distribution device receives the permission information and the certification information, judges whether or not the certification information was generated by the by the first encryption device, and if judging in the affirmative, transmits the key data to the second encryption device. | 04-21-2011 |
| 20110106744 | CONTENT RECOMMENDATION DEVICE, CONTENT RECOMMENDATION SYSTEM, CONTENT RECOMMENDATION METHOD, PROGRAM, AND INTEGRATED CIRCUIT - A content recommendation device and a content recommendation method that recommend appropriate content with appropriate timing are provided. The content recommendation device ( | 05-05-2011 |
| 20110110517 | CONTENT PLAYBACK DEVICE - To provide a content playback device capable of protecting content according to DRM, when decrypting encrypted content recorded on a recording medium and playing the decrypted content. If key generation information is “00”, a key control unit | 05-12-2011 |
| 20110119493 | UNAUTHORIZED CONTENTS DETECTION SYSTEM - Processing load on an executing device for conducting playback is high during the playback of contents since the executing device performs verification of the contents validity in parallel with the contents playback, and therefore the executing device has to be equipped with a highly efficient processor. The present invention reduces the processing load involved in the verification by using, for the verification, only a predetermined number of encrypted units selected randomly from multiple encrypted units constituting encrypted contents recorded on the DVD. In addition, the present invention is capable of improving the accuracy of detecting unauthorized contents to some extent by randomly selecting a predetermined number of encrypted units every time the verification is performed. | 05-19-2011 |
