Abstract: A method, a device, and a system for real-time publish subscribe (RTPS) discovery based on a distributed hash table (DHT) are provided. The method for RTPS discovery based on a DHT includes: registering, by a participant peer of participants, the participants in a distributed hash table (DHT) of an overlay network; obtaining location information on relative participants to be discovered from the DHT; sharing information on entities of the relative participants by exchanging a discovery message with the participant peer based on the location information on the obtained relative participants; and performing handshaking between the entities of the participants and the entities of the relative participants. Therefore, the exemplary embodiments of the present invention can rapidly and efficiently perform the discover of the participants based on the DHT.

Abstract: Provided are an apparatus and method for providing a simulation result as an image. The method includes performing a simulation of a predetermined system and generating a result log of the simulation, and converting the result log of the simulation into an image on the basis of a database storing a state and operation of a model of the system as image data. Accordingly, a simulation result of a system can be provided without detailed information about the system, an additional application, or a separate storage.

Abstract: The present invention provides a lightweight multicast method and apparatus for a data distribution service. The lightweight multicast apparatus includes a network congestion detection unit for multicasting packets to a plurality of subscriber node terminals, and detecting a cause of network congestion using a negative response message transferred from a relevant subscriber node terminal that could not receive the packets among the plurality of subscriber node terminals. A network recovery control unit determines a recovery control policy depending on the cause of the congestion detected by the network congestion detection unit, and solves the cause of the congestion.

Abstract: The present invention relates to a multi-control method for management of the response time of a data-centric real-time application program. The present invention integrally models a first system for controlling the response time of CPU operations and a second system for controlling the response time of accessing a storage medium using a MIMO structure and simultaneously controls the response time of the CPU operation and the response time of accessing the storage medium through the configuration by the integrated modeling. According to exemplary embodiments of the present invention, it is possible to more efficiently control the response time than an existing feedback control method.

Abstract: A method includes, when a passage network connecting at least one first communication entity in a first local domain with at least one second communication entity in a second local domain does not support the broadcast scheme and the multicast scheme, transmitting, by a first discovery gateway, a discovery request to a second discovery gateway, which is one of all discovery gateways connected with the first discovery gateway, in the second local domain via the passage network. Even when a passage network that does not support broadcasting and multicasting is between two communication entities, the method enables a communication entity to search for connection information about a counterpart communication entity without information required for communication entities requiring interaction on a network to connect with each other, thereby performing a function such as data exchange and service provision at a global level.

Abstract: Provided are a system and a method for self-healing in a critical system. The present invention monitors a current situation of the critical system, determines whether a system has an error by analyzing the monitoring result, judges whether to perform self-healing in a current state or drive safety software which provides a minimum basic service according to self-healing of the system error or not when the system error occurs, and evaluates self-healing performance after healing the system error. According to exemplary embodiments of the present invention, it is possible to continuously provide a software service and further improve the reliability of the self-healing system through the evaluation of the self-healing performance.

Abstract: A node constituting data distribution service (DDS) structure according to an exemplary embodiment of the present invention includes a first DDS application including a first DCPS layer and a first real-time publish-subscribe (RTPS) layer and a second DDS application including a second DCPS layer communicated with the first RTPS layer.

Abstract: A sound penetrating display apparatus for outputting sound having an object-based position coordinate effect is disclosed, which apparatus comprises a plurality of pixels, a plurality of holes which are distributed in an OLED (Organic Light Emitting Diode) display panel in a certain dense in order for sound from a speaker disposed at a back side of the OLED display panel to penetrate, a driving circuit for driving the OLED display panel, a protecting layer which is attached to a back side of the OLED display panel or is disposed close to the same and is formed of holes matching with the holes of the panel, and a plurality of matrix speakers which are disposed at a back side of the OLED display panel.

Abstract: A display apparatus having an object-oriented 3D sound coordinate indication is disclosed, in which sounds are outputted from a speaker positioned matching with a coordinate of an object in a matrix speaker apparatus formed of a plurality of small size speakers disposed behind a display apparatus in cooperation with an object content displayed on a display apparatus screen.

Abstract: The present invention relates to an apparatus for controlling the movement of a cone paper used for outputting sound, and a flexible OLED covered on the cone paper in order to enhance the sound quality of a visual speaker. In a visual speaker which includes a voice coil, a magnet, an edge, a unit enclosure, a flexible OLED for displaying video images, and a speaker cone paper, a visual speaker is characterized in that a speaker cone paper configured to output sound, a flexible OLED covered on the speaker cone paper, an edge, and a unit enclosure are formed in an integral airtight structure filled with a compressed gas, and a compression piston and a compressed gas adjusting device are further disposed for adjusting the pressure of the inner compressed gas, so that it is possible to control the movements of the flexible OLED and the speaker cone paper.

Abstract: A method of task assignment in a distributed processing system including a plurality of processors is proposed. The method of task assignment includes calculating utilities of tasks to be processed in execution units included in each processor and arranging the calculated results in descending order; calculating utility difference values between the execution units included in each processor and outputting a highest difference value; comparing a utility of the task with the output highest difference value; designating the task to be assigned to the execution unit having the lowest utility in a processor in which the highest difference value is generated when the utility of the task is less than or equal to the output highest difference value; repeating the calculating, comparing, and designating in the order of the arranged tasks; and assigning the tasks to the designated targets.

Abstract: Provided are a system and method for determining whether to provide service and a content of the service based on ubiquitous-based context information. The method includes the steps of registering at least one context-aware service (CAS); determining whether sensors associated with the CAS are registered; when all the sensors are registered, checking all contexts associated with the CAS; upon receipt of a CAS request, receiving context information from the sensors and determining whether the context information satisfies the contexts; and providing the CAS if the context information satisfies at least one of the contexts. With the flexible engine determining whether to provide service corresponding to a current context even though all context information constituting the CAS is not collected, information is quickly provided upon receipt of a service request from a user.