Patent application number | Description | Published |
20080226077 | Apparatus, Method, and Computer Program Product for Playing Back Content - A content playback apparatus includes an SKF selecting unit that selects one segment key file from plural segment key files recorded in a DVD media at a time of playback of a content of the sequence key section, a data selecting unit that selects each content corresponding to a segment number of each key entry registered in the selected segment key file, a moving picture data decrypting unit that decrypts the selected moving picture data by a segment key corresponding to the segment number, and a decoder that plays back the decrypted moving picture data. | 09-18-2008 |
20080232785 | Apparatus, Method, and Program Product For Recording and Reproducing Contents - A contents recording and reproducing apparatus performs a record and a reproduce of a recording medium, in which the recording medium records a title key file registering therein at least one title key which encrypts each of plural title contents corresponding to a program video or sound, and title contents encrypted by the title key. The contents recording and reproducing apparatus includes an TKF initializing unit | 09-25-2008 |
20090210709 | CONTENT TRANSMITTING AND RECEIVING SYSTEM - A transmitting apparatus transmits, to a receiving apparatus, a content that contains at least, in the stated order, a first portion that is encrypted with a shared key shared between the transmitting apparatus and the receiving apparatus, a second portion that is not encrypted, and a third portion that is encrypted with the shared key. In this situation, in the case where the encrypted third portion has become a transmission target after the second portion has been transmitted, and also, there is a possibility that the shared key stored in the receiving apparatus may be invalidated when the encrypted third portion is received, the transmitting apparatus sequentially transmits a fourth portion and the encrypted third portion to the receiving apparatus, the fourth portion containing at least element data that belongs to the last group in the second portion. | 08-20-2009 |
20100054698 | APPARATUS, METHOD, AND COMPUTER PROGRAM PRODUCT FOR RECORDING CONTENT - An apparatus determines whether a combination of a certificate type of a content certificate recorded on a source recording medium and a medium type of the source recording medium is a proper combination. If the combination is a proper combination, the apparatus requests a license server, which is connected to the apparatus via a network, to give approval to record content on a target recording medium. If the apparatus is a legitimate DVD recorder, the license server sends to the content recording apparatus a content certificate including on the source recording medium as the certificate type. The apparatus records the content together with the received content certificate on the target recording medium. | 03-04-2010 |
20100121966 | REPEATER AND REPEATING METHOD THEREOF - According to one embodiment, a repeater receives content data from a sender device through a first content protection technology and transmits the content data to another device through a second content protection technology. The repeater includes a receiver, a preparation module, and a transmitter. The receiver receives identification information that identifies a device compliant with the second content protection technology through the second content protection technology. The preparation module prepares an identification information list based on the first content protection technology that contains the identification information based on the second content protection technology received by the receiver and identification information based on the first content protection technology that identifies the repeater. The transmitter transmits the identification information list to the sender device through the first content protection technology. | 05-13-2010 |
20120170913 | APPARATUS, METHOD, AND COMPUTER PROGRAM PRODUCT FOR RECORDING CONTENT - An apparatus determines whether a combination of a certificate type of a content certificate recorded on a source recording medium and a medium type of the source recording medium is a proper combination. If the combination is a proper combination, the apparatus requests a license server, which is connected to the apparatus via a network, to give approval to record content on a target recording medium. If the apparatus is a legitimate DVD recorder, the license server sends to the content recording apparatus a content certificate including on the source recording medium as the certificate type. The apparatus records the content together with the received content certificate on the target recording medium. | 07-05-2012 |
20130055340 | INFORMATION PROCESSING APPARATUS, INFORMATION PROCESSING METHOD, AND COMPUTER PROGRAM PRODUCT - According to an aspect of the embodiment, an information processing unit includes a browser unit that receives page files and execute a web application; an application range management unit that receives application range information at the start of execution of the web application, and stores that information in a memory unit; a termination detecting unit that, when the page file being processed by the browser unit changes, determines whether or not the web application being executed has terminated depending on whether or not the new page file is included in the application range information; a usability determining unit that determines whether or not an add-on for which a call request is issued is allowed to be used in the web application being executed; and an add-on calling unit that calls an add-on when determined that the add-on is allowed to be used in the web application being executed. | 02-28-2013 |
20130247211 | AUTHORITY CHANGING DEVICE, GENERATING DEVICE, AND COMPUTER PROGRAM PRODUCT - According to an embodiment, an authority changing device includes a first determiner, a second determiner, and a changing unit. A first authority is defined by a first combination of first to third item values, and a second authority is defined by a second combination of the fourth to sixth item values. The first determiner uses a logical expression to determine whether the change from the first authority to the second authority is possible, not possible, or unknown. The second determiner uses a first table to determine the availability of change from the first authority to the second authority when the availability of the change is determined to be unknown. The changing unit changes the first authority to the second authority when the change is determined to be possible. | 09-19-2013 |
20140025954 | INFORMATION PROCESSING DEVICE, INFORMATION PROCESSING METHOD, AND COMPUTER PROGRAM PRODUCT - According to an embodiment, an information processing device includes an event processor and a first determining unit. The event processor includes an event detecting unit. The event detecting unit is configured to detect an event and suspend execution of the event. The first determining unit registering unit is configured to register the first determining unit when stored first identification information and identification information of the first determining unit match with each other. The first determining unit includes a second determining unit. The second determining unit registering unit is configured to register a second application as a second determining unit when the verification of a signature of the second application is successful. The event detecting unit cancels suspending of the event and executes the event when the result of determination indicates permission of the execution. | 01-23-2014 |
20140026183 | INFORMATION PROCESSING DEVICE AND COMPUTER PROGRAM PRODUCT - According to an embodiment, an information processing device includes a kernel configured to execute a system call, and a managing unit configured to determine whether or not to permit execution of the system call. The kernel includes a holding unit and a system call executing unit. The holding unit holds execution of the system call until a result of determination as to whether or not to permit execution of the system call is returned from the managing unit. The system call executing unit executes the system call. | 01-23-2014 |