Patent application number | Description | Published |
20080239909 | Recorder/Reproducer and Content Data Protection System - The recorder/reproducer ( | 10-02-2008 |
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 |
20090013196 | Secure Processing Device, Method and Program - A secure processing device having a power saving mode, which is used for built-in apparatuses, calculates a hash value of secure data that needs to be saved when switching to the power saving mode, stores the calculated hash value in a protection storage unit whose data is not lost even in the power saving mode, encrypts the secure data and stores the encrypted data in an external memory when switching to the power saving mode. When switching back to the normal power mode, the secure processing device decrypts the encrypted data, calculates a hash value of the decrypted data and compares the hash value with the hash value stored in the protection storage unit. The decrypted data is restored to the protection storage unit when the hash values are identical, but discarded together with the encrypted data stored in the external memory when the hash values are not identical. | 01-08-2009 |
20090106832 | COMPUTER SYSTEM AND PROGRAM CREATING DEVICE - A mobile telephone | 04-23-2009 |
20090193521 | ELECTRONIC DEVICE, UPDATE SERVER DEVICE, KEY UPDATE DEVICE - The present invention offers an electronic device that reduces the amount of data for communication required when files pertaining to software are to be updated, as compared to the conventional devices, and performs tamper detection. The present invention is an electronic device having an application file pertaining to an operation of application software and updating the application file via a network. The electronic device (i) stores therein the application file including one or more data pieces, (ii) receives, from an external apparatus via the network, update data and location information indicating a location, within the application file, which is for rewrite with the update data, (iii) rewrites only part of the application file by writing over a data piece present at the indicated location with the update data, to update the application file, and (iv) examines whether the updated application file has been tampered with. | 07-30-2009 |
20090204806 | CERTIFYING DEVICE, VERIFYING DEVICE, VERIFYING SYSTEM, COMPUTER PROGRAM AND INTEGRATED CIRCUIT - An authentication system that can show having an authentic computer program, can certify the authenticity of itself, and can verify the certification. The authentication system is composed of a terminal (requesting device) and a card (verifying device). The card stores secret information to be used by the terminal, and an update program for the terminal. The card verifies authenticity of the terminal using information obtained from the terminal. When it judges that the terminal is authentic, the card outputs the secret information to the terminal. When it judges that the terminal is not authentic, the card outputs the update program. With this structure, the terminal is forced to update the program when it attempts to use the secret information. | 08-13-2009 |
20090271860 | AUTHENTICATOR APPARATUS - An authenticator apparatus which makes it difficult for an unauthorized user to masquerade and enhances safety includes an authenticating information holding unit ( | 10-29-2009 |
20090307783 | DATA PROCESSING DEVICE, METHOD, PROGRAM, INTEGRATED CIRCUIT, AND PROGRAM GENERATING DEVICE - A data processing apparatus controls execution of debugging of a program performed by a debugger. The program includes a verification value used for judgment on whether to permit the debugging, and an access control list that shows whether to permit an access to each of parts constituting the program. The data processing apparatus acquires a debugger ID of the debugger from the debugger, and the verification value and the access control list included in the program. The data processing apparatus judges whether to permit the debugging, according to the result of comparison between the debugger ID and the verification value. The data processing apparatus permits an access to a part of the program to be debugged when the access control list shows that the access is permitted. The data processing apparatus does not permit the access to the part when the access control list shows that the access is not permitted. | 12-10-2009 |
20090313425 | MEMORY CONTROL APPARATUS, CONTENT PLAYBACK APPARATUS, CONTROL METHOD AND RECORDING MEDIUM - A data storage apparatus is provided that realizes a measure against deterioration of a flash memory in which integrity check data is stored. A content playback apparatus ( | 12-17-2009 |
20100005264 | INFORMATION PROCESSING DEVICE, INTEGRATED CIRCUIT, METHOD, AND PROGRAM - To aim to provide an information processing device capable of improving a processing capability and securely handling programs and data to be protected. According to a system LSI | 01-07-2010 |
20100189265 | KEY TERMINAL APPARATUS, CRYPTO-PROCESSING LSI, UNIQUE KEY GENERATION METHOD, AND CONTENT SYSTEM - A key terminal apparatus includes a crypto-processing LSI that performs predetermined crypto-processing. Unique information identifying the crypto-processing LSI is embedded in the crypto-processing LSI. A predetermined master key corresponding to a predetermined key is embedded in the crypto-processing LSI. The crypto-processing LSI (a) receives an encrypted manufacturer key from the manufacturer key storage unit, (b) decrypts the encrypted manufacturer key using the predetermined master key to generate a manufacturer key, (c) generates a unique manufacturer key identical to the predetermined unique manufacturer key, based on the unique information embedded in the crypto-processing LSI and the generated manufacturer key, and (d) decrypts the received encrypted device key using the generated identical unique manufacturer key to generate a predetermined device key. | 07-29-2010 |
20110126284 | CONTENT REPRODUCTION DEVICE, CONTENT REPRODUCTION DEVICE CONTROL METHOD, CONTENT REPRODUCTION PROGRAM, RECORDING MEDIUM, AND INTEGRATED CIRCUIT - A content playback device of the present invention includes a playback unit | 05-26-2011 |
20110202411 | ADVERTISING VOICE CONTROL DEVICE, INTEGRATED CIRCUIT, ADVERTISING VOICE CONTROL METHOD, ADVERTISING VOICE CONTROL PROGRAM, AND RECORDING MEDIUM - A control terminal device | 08-18-2011 |
20130134946 | POWER CONTROL APPARATUS AND POWER CONTROL METHOD - A power control apparatus includes: a control unit that controls discharged power of a first battery and discharged power of a second battery; and a power acquisition unit that acquires a total power to be supplied from the first and second batteries to a load device connected to the first and second batteries. The control unit: in a first period, changes the discharged power of the first battery according to a change in the acquired total power, and changes the discharged power of the second battery toward a first direction in which the discharged power of the second battery approximates the discharged power of the first battery; and, in a second period after the first period, changes the discharged power of the second battery according to the change in the acquired total power, and changes the discharged power of the first battery toward a second direction opposite the first direction. | 05-30-2013 |