Abstract: A system for uplink resource allocation in mobile Internet for remote-controlling robots includes a schedule policy table for storing therein priorities assigned to the robots to support required image qualities of images received from the robots and maximum allocatable uplink resource amounts for the robots; and a scheduler for allocating uplink resources to the robots based on the priorities, the maximum allocatable uplink resource amounts and required bandwidths received from the robots. Each of the robots includes a camera for taking the images; an encoder for encoding the images taken by the camera; and a mobile Internet terminal, having a transmission queue for temporarily storing therein the encoded images, for transmitting the encoded image in the transmission queue to a remote control center via the uplink resources allocated based on the required bandwidth, which is calculated based on status of the transmission queue.

Abstract: A network-based robot system for performing content transmission/execution includes a content management unit for managing contents created in a tree-like, hierarchical structure, and one or more robots connected to the content management unit over a network. Each robot requests the content management unit to provide a content to be executed by the robot, downloads the content from the content management unit via the network, and determines a content execution plan to execute the content depending on specification of the robot.

Abstract: An intelligent printing system includes a printed document delivery robot for delivering printed documents. The robot identifies a location of each user PC requesting for printing based on a network address of the PC and establishes a print plan based on the print request. Upon completion of a printing job, the robot travels along a movement path having the shortest distance to each user PC who has requested for printing.

Abstract: Disclosed is a method for data synchronization and update conflict resolution between mobile clients and a server in a mobile system which maintains consistency of data between the clients and the server and enables the clients to continuously perform an effective update operation with respect to objects of the server even in a clients' disconnection state by the mobile clients performing an independent update operation with respect to disjoint fragments and associated objects for a specified object using the structure of the objects and the meaning of applications and then performing the data synchronization and the conflict resolution between the clients and the server during a reconnection operation.

Abstract: A method of supporting robot application programming and a programming tool for the same are provided. In the method of supporting robot application programming, behaviors that constitute operations to be performed by a robot are assembled in the programming tool for programming an application program for the operations to be performed by the robot. The method includes: (a) classifying the operations to be performed by the robot by functions of the robot; (b) displaying the behavior of the robot which can constitute one of the functions on a display device in a graphical form with block shapes that can be connected one another visually with a plurality of conditions; and (c) converting a set of the blocks into an XML file, when the function of the robot is constructed as a robot task by the set of blocks in the graphical form.

Abstract: A dynamic priority based message transmitting apparatus includes a priority storing block for recording priorities in a communication network environment having multitude nodes and recording the lowest priority among the priorities, a communication bus monitoring block for monitoring a communication bus and transmitting its message when the communication bus is available, a message collision solving block for solving message collision by monitoring message transmission when messages are transmitted from the other nodes simultaneously, comparing its priority and those of the other nodes and, as the comparison result, transmitting its message if its priority is higher than those of the other nodes while not transmitting its message if otherwise, a message filtering block for executing filtering by judging whether or not its node has to process a certain message based on an identifier of the certain message, and a priority adjusting block for adjusting its priority according to a predefined rule.

Abstract: The apparatus for a redundant interconnection between multiple hosts and a redundant array of inexpensive disks (hereinafter, referred to as ‘RAID’), which is capable of supporting a fault tolerance of RAID controllers and simultaneously heightening a performance, comprises a plurality of RAID controlling units for processing a requirement of numerous host computers connected with one another through the industrial standard communication network and for fault tolerance; a plurality of connecting units for connecting the plurality of RAID controlling units to the numerous host computers; and a plural number of network interface controlling units respectively contained into the plurality of RAID controlling units, for exchanging information directly with an opposite network interface controlling unit provided within an opposite RAID controlling unit and the numerous host computers, through the plurality of connecting units.

Abstract: Disclosed is a method for data synchronization and update conflict resolution between mobile clients and a server in a mobile system which maintains consistency of data between the clients and the server and enables the clients to continuously perform an effective update operation with respect to objects of the server even in a clients' disconnection state by the mobile clients performing an independent update operation with respect to disjoint fragments and associated objects for a specified object using the structure of the objects and the meaning of applications and then performing the data synchronization and the conflict resolution between the clients and the server during a reconnection operation.

Abstract: A system and method of caching multiple Java-database connectivity is disclosed. A cache manager for cache management is provided between an intermediate server and a database server in the multi-layer Java-database connectivity system having the intermediate server. If the intermediate server provides a query statement for accessing a database, the caching of the intermediate server is operated in a different manner according to the kind of the query statement. Thus, a response time of the system can be reduced from the viewpoint of a user, and the load of the network can be reduced through reduction of the network traffic from the viewpoint of a network. Also, the load of the database server for service requests can be reduced, and a database management system can process more requests from users.

Abstract: The apparatus for a redundant interconnection between multiple hosts and a redundant array of inexpensive disks (hereinafter, referred to as ‘RAID’), which is capable of supporting a fault tolerance of RAID controllers and simultaneously heightening a performance, comprises a plurality of RAID controlling units for processing a requirement of numerous host computers connected with one another through the industrial standard communication network and for fault tolerance; a plurality of connecting units for connecting the plurality of RAID controlling units to the numerous host computers; and a plural number of network interface controlling units respectively contained into the plurality of RAID controlling units, for exchanging information directly with an opposite network interface controlling unit provided within an opposite RAID controlling unit and the numerous host computers, through the plurality of connecting units.

Abstract: A VRAM-based parity engine for use in a disk array controller is disclosed, in which the parity arithmetic operation is carried out in a fast and effective manner, thereby improving the performance of the RAID system. Particularly, the parity data arithmetic operation is not resorted to a processor, but to a VRAM, thereby realizing a high speed operation. In the disk array controller, a VRAM (video RAM) is used, in such a manner that the reading, updating and writing are made to be overlapped during the arithmetic operation, thereby promoting the speed of the arithmetic. Therefore, a relatively large capacity memory can be formed compared with the conventional SRAM, and therefore, a temporary buffer memory within the parity engine is used as a parity cache, thereby doubling the performance.