Patent application number | Description | Published |
20090292922 | SYSTEM AND METHOD FOR EXCHANGING SECURE INFORMATION BETWEEN SECURE REMOVABLE MEDIA (SRM) DEVICES - A system and method for exchanging secure information between Secure Removable Media (SRM) devices. An initialization operation is performed between the SRM devices. After a mutual authentication operation is performed between the SRM devices, a secret key is exchanged for secure information exchange. An installation setup operation is then performed to establish an environment for moving rights between the SRM devices, and the rights information can be directly exchanged between the SRM devices by performing a rights installation operation between the SRM devices. | 11-26-2009 |
20090327725 | Content object management method, right object providing method, content object revocation method based thereon, and device using the same - A device for managing a rights object and revoking a content object. The device includes a content/rights object storage unit for storing at least one content object, and a rights object corresponding to each content object. An authentication module performs mutual authentication between devices giving and taking a rights object, and when a revocation notification of a rights object among the stored rights object is received, authenticates whether an author having transferred the revocation notification is an author having a revocation right. A content object checking unit checks if the content object is valid before the content object is executed. A rights object management module searches for a rights object corresponding to a content object to be executed, and deletes a rights object corresponding to the revocation notification when the author is an author having the revocation right. A controller controls the modules and the units. | 12-31-2009 |
20100049972 | Apparatus and method for using contents information in digital rights management - An apparatus and method for determining contents information corresponding to a Rights Object (RO) by transmitting information on contents together when the RO is moved from a mobile device to a memory card or a smart card or when the RO is moved from the memory card or the smart card to the mobile device are provided. The apparatus includes a meta information manager for determining information on contents corresponding to the RO when the RO is moved, and for generating meta information containing the determined contents information, and a controller for providing control to transmit the RO and the meta information generated by the meta information manager to a portable storage device. Accordingly, the conventional problem can be solved in which information on contents cannot be determined by using a Contents IDentifier (CID) if the RO does not exist together with the contents. | 02-25-2010 |
20100083176 | Apparatus and method for displaying a contents list on screen in mobile communication terminal - A mobile terminal includes an apparatus and a method for displaying a contents list on a screen. In the method, specification information required for executing relevant content is determined by parsing a Right Object (RO) of the content. Whether the relevant content is executable is determined using the determined specification information. A determination result is displayed on the contents list and the contents list is output on the screen. | 04-01-2010 |
20100095141 | Apparatus and method for a power control in a system using an embedded CPU - A portable communication apparatus is configured to perform a method for a power control of a Central Processing Unit (CPU) in a portable communication apparatus. The portable communication apparatus for a power control of the CPU includes a CPU for reporting an operation status of the CPU. The CPU is configured to change a power control level according to a control of an overhead determiner by using a pin and the overhead determiner for determining an overhead of the CPU by using the pin and for controlling the power control level of the CPU according to the overhead of the CPU. | 04-15-2010 |
20100290415 | Apparatus and method for bandwidth request in broadband wireless communication system - A transmission delay caused by a Bandwidth Request (BR) of a Mobile Station (MS) in a broadband wireless communication system can be avoided. An operation of the MS includes performing an initial BR to allocate resources across a plurality of frames. When a resource is allocated according to the initial BR, an adaptive BR is performed on the resource in a piggyback manner by using the resource while transmitting an acknowledge (ACK) message corresponding downlink Transmission Control Protocol (TCP) data. | 11-18-2010 |
20110093711 | METHOD AND SYSTEM FOR ENCRYPTING DATA IN A WIRELESS COMMUNICATION SYSTEM - A method and system for encrypting data in a wireless communication system are provided. The system includes a first node for generating a first encryption key using a plurality of encryption key parameters when performing authentication with a second node, for changing a second parameter among the plurality of encryption key parameters to generate a second encryption key being identical to the first encryption key, if a first parameter among the plurality of encryption key parameters is changed during re-authentication between the first node and the second node, for generating the second encryption key using the changed first parameter and the changed second parameter, and for encrypting data to be transmitted to the second node using the second encryption key. | 04-21-2011 |
20110093935 | CONTROL OVER ACCESS TO DEVICE MANAGEMENT TREE OF DEVICE MANAGEMENT CLIENT - Provided is a control over access to a Device Management (DM) tree of a client. The client receives a secure area creation password from a server, creates a secure area by using the received creation password, and moves the DM tree to the secure area. In addition, the client receives a secure area access password from the server, accesses the secure area by using the received access password, and performs a remote management through a DM command received from the server. The authority to access the DM tree is given to only the client acquiring a password from the server, which effectively prevents an unauthorized change of a DM tree. | 04-21-2011 |
20120125876 | MAINTENANCE SYSTEM FOR WIND TURBINE EQUIPMENT - The present invention provides a maintenance system for wind turbine equipment. The maintenance system includes a trolley support unit ( | 05-24-2012 |