| Ajou University Industry Cooperation Foundation Patent applications |
| Patent application number | Title | Published |
|---|
| 20110085665 | Method For Generating Dynamic Group Key - A method of generating a dynamic group key of a group formed of a plurality of nodes, the method including: unicasting a public key that is based on respective secret keys of each of a plurality of general nodes excluding a master node, which is one of the plurality of nodes, wherein the unicasting is performed by the general nodes; broadcasting to the group an encryption value obtained by exponentially-calculating a secret key of the master node to the plurality of public keys, wherein the broadcasting is performed by the master node upon receiving the plurality of public keys; and obtaining a group key by using an inverse power-calculation of the respective secret keys of each of the general nodes based on the encryption value, wherein the obtaining is performed by the general nodes. | 04-14-2011 |
| 20100245564 | METHOD FOR SELF LOCALIZATION USING PARALLEL PROJECTION MODEL - A method of recognizing a self location of an image acquisition device by acquiring an image of two or more reference objects is provided. The method of the present invention comprises setting an actual camera plane, two or more reference object planes, and two or more virtual viewable planes located between the actual camera plane and the reference object planes; projecting the reference objects to a corresponding one of the virtual viewable planes; calculating a distance between a viewing axis and the reference objects and a distance between the viewing axis and images on the actual camera plane, the images corresponding to the reference objects; and sensing the self location of the image acquisition device by using an orientation and a zoom factor of the image acquisition device and coordinates of the reference objects, wherein the zoom factor is a ratio of a length of the reference object plane and a distance between the reference object plane and the virtual viewable plane, and the actual camera plane, the virtual viewable plane, and the reference object plane are perpendicular to the viewing axis. | 09-30-2010 |
| 20100231723 | APPARATUS AND METHOD FOR INFERENCING TOPOLOGY OF MULTIPLE CAMERAS NETWORK BY TRACKING MOVEMENT - Provided are an apparatus and a method for tracking movements of objects to infer a topology of a network of multiple cameras. The apparatus infers the topology of the network formed of the multiple cameras that sequentially obtain images and includes an object extractor, a haunting data generator, and a haunting database (DB), and a topology inferrer. The object extractor extracts at least one from each of the obtained images, for the multiple cameras. The haunting data generator generates appearing cameras and appearing times at which the moving objects appear, and disappearing cameras and disappearing times at which the moving objects disappear, for the multiple cameras. The haunting DB stores the appearing cameras and appearing times and the disappearing cameras and disappearing times of the moving object, for the multiple cameras. The topology inferrer infers the topology of the network using the appearing cameras and appearing times and the disappearing cameras and disappearing times of moving objects. Therefore, the apparatus accurately infers topologies and distances among the multiple cameras in the network of the multiple cameras using the cameras and appearing and disappearing times at which the moving objects appear and disappear. As a result, the apparatus accurately track the moving objects in the network. | 09-16-2010 |
| 20100157827 | METHOD FOR IMPROVING ENERGY EFFICIENCY IN WIRELESS MESH NETWORK - A method for effectively using power resource in a wireless mesh network is disclosed to select and change a level of a power saving mode according to terminal and network situations to increase the duration of the network's existence as well as improve the power consumption of each mesh terminal. After active mesh terminals that are to perform a data relay function and super-saving mesh terminals that are not to perform the data relay function are selected in consideration of a network topology at certain periods, the level of a power saving mode of the mesh terminals selected as the super-saving mesh terminals is higher than that of the mesh terminals selected as the active mesh terminals. And then, a routing path in a tree form is formed along the mesh terminals selected as the active mesh terminals to transmit data. | 06-24-2010 |
| 20100156737 | Broadband U-shaped RFID tag antenna with near-isotropic characteristics - A radio frequency identification (RFID) tag antenna in a U shape, having constant near-isotropic characteristics in a broadband. The RFID tag antenna includes a dipole antenna in a U shape, including a plurality of first conducting wires having a first width and separated from and parallel to each other with a first gap and a second conducting wire having a second width and connecting the plurality of first conducting wires; and a feed unit connected to the second conducting wire and located between the plurality of first conducting wires. The RFID tag antenna further includes the dipole antenna in a U shape and the feed unit disposed in the dipole antenna in a U shape, thereby having the constant near-isotropic characteristics in the broadband. | 06-24-2010 |
| 20100011374 | OPEN FRAMEWORK SYSTEM FOR HETEROGENEOUS COMPUTING AND SERVICE INTEGRATION - An open framework system for both heterogeneous computing and service integration is provided. The open framework system for both heterogeneous computing and service integration according to the present invention comprises a plurality of Wrappers both registering and administrating services by service having similar function, a framework transferring an execution result of a service to the applications after discovering the service through the Wrappers and invocating the service in case of receiving a message requesting the service from the applications, a message broker transferring messages between the applications and the framework, and an external module converting the protocols for meeting specification of the Wrapper for an existing service in an open framework system for both heterogeneous computing and service integration efficiently establishing USS (Ubiquitous Smart Space) by systematically integrating services of various protocols using in a plurality of applications under ubiquitous environment. Since the application developed at the open framework system for both heterogeneous computing and service integration according to the present invention is self-existent for even changes of both service and environment, there is no need for the application to be amended in case that the services are further deleted or amended. Therefore, the life period of the application may be prolonged. | 01-14-2010 |
| 20080313262 | Community Computing Method and Community Management System - The present invention provides a community computing method and system comprising a step of community formation forming a community by defining a goal, policies, members, operations among the members, an operation situation of the community and an idle situation of the community, a step of community standby both waiting for an operation starting timing and organizing an actual community member, after the step of community formation, a step of community activation both being self activated and starting an operation, when the community operation situation is ready while the community monitors a context information, after the step of community standby, a step of community deactivation both temporarily stopping an operation for itself and waiting for a next community operation, when the community satisfies the goal of the community, or a situation to deactivate comes in, after the step of community activation; and, a step of community termination terminating all operations for itself in case the community does not need to operate any more. | 12-18-2008 |
| 20080275946 | Smart Scheduler Capable of Reflecting Change of Situation - Disclosed is a smart scheduler reflecting change of situation. The smart scheduler reflecting change of situation includes an interface unit and an alarm time decision unit. The interface unit both sends and receives contextual information to/from an external service-providing source. The alarm time decision unit reflects the contextual information that is received and updated from the external service-providing source, so that it may decide a final alarm time for performing a fixed schedule, even if any situation change occurs. The smart scheduler has the advantage that the determined schedule may be performed in the time in which a user designates, by differently setting up the alarm time according to the situation changes, whatever situation change brings about. | 11-06-2008 |
| 20080225975 | Structured Space-Time Code Achieving the Full Diversity and Full Rate and Generating Method Thereof, and Multi-Input Multi-Output System - A space-time code used for a transmitter to transmit a plurality of data symbols to a receiver in a MIMO system, the space-time code including a code word matrix for transmitting an amount of data symbols corresponding to a product of the number of transmit antennas and a spatial multiplexing rate during one block period, wherein a row index indicates combined signals transmitted through different transmit antennas and a column index indicates time slots that correspond to the number of transmit antennas, and wherein the number of data symbols allocated to each transmit antenna in a code block corresponds to the spatial multiplexing rate, and the data symbols are combined by different combining coefficients for each transmit antenna at every time slot, and simultaneously transmitted through different transmit antennas, and each transmit antenna transmits a different set of data symbols at every time slot. | 09-18-2008 |
