| Patent application number | Description | Published |
|---|
| 20090129588 | Information processing apparatus - An information processing apparatus capable of effectively preventing unauthorized use of content distributed through a network when playing the content. The information processing apparatus includes a tamper-resistant secure module, a receiving block, and a playback block. The secure module includes a key storage block for storing a decryption key, a decryption block, and an encryption block. The receiving block receives distribution data distributed through the network and transfers the data to the decryption block. The decryption block decrypts the distribution data to obtain content by using the decryption key. The encryption block divides the content to a plurality of split pieces of content and encrypts them by using a temporary encryption key. Information on a temporary decryption key is output each time the temporary encryption key is changed. The playback block decrypts the encrypted pieces of content by using the temporary decryption key and combines and plays them. | 05-21-2009 |
| 20110182304 | Data transmitting device and data receiving device - A data transmitting device transmits section information, a data broadcasting content, and a broadcasting content in a multiplexed manner. The data transmitting device includes a specified-information embedding unit that embeds information related to a specified image into the section information; a multiplexing unit that multiplexes the section information embedded with the specified information by the specified-information embedding unit, the data broadcasting content, and the broadcasting content; and a transmitting unit that transmits data multiplexed by the multiplexing unit to a data receiving device. | 07-28-2011 |
| 20110187932 | DIGITAL BROADCAST METHOD, DATA RECEIVING DEVICE, AND DATA TRANSMITTING DEVICE - A digital broadcast method includes receiving audio and video data that form a predetermined content for digital broadcasting; receiving related data indicating a content related to the predetermined content; performing a control that transmits the received related data to a data receiving device prior to transmitting the received audio data and video data; receiving the audio and video data that form the predetermined content and the related data of the predetermined content that have been subject to the control; changing a viewing channel in response to a changing instruction of the viewing channel from a viewer; and outputting, when the viewing channel is changed from a first channel number to a second channel number at the changing and then changed to the first channel number again, the received related data with audio and video data corresponding to the first channel number to an output unit. | 08-04-2011 |
| 20120042380 | SECURE MODULE AND INFORMATION PROCESSING APPARATUS - A secure module includes a generating unit that executes generation processing of generating a scanning program that causes scan processing, which generates unique code for a program under test, to be executed at a connected device and further executes update processing of randomly updating contents of the scanning program; a storage device storing therein the unique code for the program under test; and an authenticating unit that if the scanning program is executed by the connected device and executed with respect to the program under test stored at a designated storage area in the connected device, authenticates validity of the program under test stored at the designated storage area, based on the unique code stored in the storage device and execution results of the scanning program executed at the connected device. | 02-16-2012 |
| 20120201380 | COMMUNICATION APPARATUS AND SECURE MODULE - A communication apparatus includes: a secure module; a first storage device, provided outside the secure module, to store a program for encrypted communication with an apparatus external to the communication apparatus using a cryptographic key stored in the secure module; a detecting unit, provided in the secure module, to detect tampering of the program; and a setting unit, provided in the secure module, to disable the encrypted communication when the tampering of the program is detected. | 08-09-2012 |
| 20120278608 | INFORMATION PROCESSING APPARATUS, SECURE MODULE, INFORMATION PROCESSING METHOD AND COMPUTER PRODUCT - An information processing apparatus securely stores a program group comprising one or more programs and includes a first detector that detects an execution waiting state of a given program among the program group; a secure module that is configured such that information stored therein cannot be referred to by an external device, and when the execution waiting state is detected by the first detector, that encrypts the given program and writes the encrypted given program to a storage area that is different from that of the program group; a second detector that detects an execution request concerning the given program; a decrypter that decrypts the given program encrypted by the secure module and writes the decrypted given program to the storage area, when the execution request concerning the given program is detected by the second detector; and a program executor that executes the given program decrypted by the decrypter. | 11-01-2012 |
