Abstract: Disclosed herein is an apparatus and method for calculating a TCP checksum. An apparatus for calculating a TCP checksum includes a data division unit for dividing content to be transmitted into two or more primary data fragments by a unit of a preset byte. A first checksum calculation unit calculates first checksums for the primary data fragments, respectively. A second checksum calculation unit calculates a second checksum for secondary data to be inserted into a data area of the TCP segment using the first checksums. Accordingly, in TCP-based networks, a checksum calculation procedure is improved upon transmitting static content, so that a static content transfer rate occupying most of TCP-based network traffic can be improved.

Abstract: Disclosed herein is an apparatus and method for calculating a TCP checksum. An apparatus for calculating a TCP checksum includes a data division unit for dividing content to be transmitted into two or more primary data fragments by a unit of a preset byte. A first checksum calculation unit calculates first checksums for the primary data fragments, respectively. A second checksum calculation unit calculates a second checksum for secondary data to be inserted into a data area of the TCP segment using the first checksums. Accordingly, in TCP-based networks, a checksum calculation procedure is improved upon transmitting static content, so that a static content transfer rate occupying most of TCP-based network traffic can be improved.

Abstract: A contents conversion communication terminal, a contents conversion supporting server system, and a contents conversion supporting method are provided. In a protocol structure of the communication terminal, a distribution file system layer supports a server system and at least one other communication terminal connected through a network to share a data file therebetween, an adaptation layer performs a contents conversion to use a data file in the communication terminal, the adaptation layer being placed on the distribution file system layer, and a virtual file system layer receives a system call message and transmits the system call message to the adaptation layer, the virtual file system layer being placed on the adaptation layer.

Abstract: A multiple mode terminal according to an exemplary embodiment of the present invention includes a mode controller, an application service unit, a common link module, and a plurality of device drivers. The mode controller uses network state monitoring information and controls the handoff between a plurality of networks. The application service unit includes protocols providing appropriate data communication services for the plurality of networks, and a plurality of programs designed to perform data communication services. The common link module performs the handoff between the heterogeneous networks by a handoff request of the mode controller, updates a transmission path of the data packet according to the performed handoff, and supports a data communication service of the application service unit. The plurality of device drivers control the terminal to function for the data service in the plurality of networks.

Abstract: Provided is an apparatus and method for certifying a hardware abstraction layer in a mobile terminal. The apparatus includes: a communication unit for receiving a predetermined test case from an external host certifying system and transmitting a test result of performing the received test cast to the host certifying system; an event receiver for receiving a test result of performing an event type test case from a hardware abstraction layer; and a controller for controlling the hardware abstraction layer to perform the test case received through the communication unit, and receiving the test result of performing the received test case received from the event receiver or the hardware abstraction layer and transmitting the received test result to the host certifying system.

Abstract: The present invention provides a secondary power supply for the telematics terminal. A secondary power supply for a telematics terminal including. a power control unit for controlling a power supply based on a power control signal of the telematics terminal and/or a start-up key signal; a telematics control unit which is operated by power supplied from a secondary power supply unit under the control of the power control unit and controls each of components inside the telematics terminal; the secondary power supply unit for supplying the power to the telematics control unit; and a rectifying unit for rectifying power from a main power supply unit one more time and protecting the components from a reverse voltage by opening the connection of the main power supply unit and the secondary power supply unit when a voltage level of the secondary power supply unit is higher than that of the main power supply unit.

Abstract: The present invention provides a secondary power supply for the telematics terminal. A secondary power supply for a telematics terminal including: a power control unit for controlling a power supply based on a power control signal of the telematics terminal and/or a start-up key signal; a telematics control unit which is operated by power supplied from a secondary power supply unit under the control of the power control unit and controls each of components inside the telematics terminal; the secondary power supply unit for supplying the power to the telematics control unit; and a rectifying unit for rectifying power from a main power supply unit one more time and protecting the components from a reverse voltage by opening the connection of the main power supply unit and the secondary power supply unit when a voltage level of the secondary power supply unit is higher than that of the main power supply unit.

Abstract: Provided is a method for transporting massive data effectively on a multi-mode terminal for saving a cost and time required for transmitting massive data by separately transmitting basic information required for accessing to the massive data and real massive data, considering economical and technical characteristics of each network in a multi-mode terminal which supports heterogeneous networks. The method for transmitting massive data effectively on a multi-mode terminal includes the steps of: requesting a multimode terminal to download massive data, the multimode terminal supporting a narrowband wireless network and a broadband wireless network; obtaining basic information required for downloading the massive data requested through a narrowband wireless network in the multimode terminal; and downloading the massive data requested from a contents server connected to an Internet by accessing to the broadband wireless network based on the basic information in the multimode terminal.

Abstract: A contents conversion communication terminal, a contents conversion supporting server system, and a contents conversion supporting method are provided. In a protocol structure of the communication terminal, a distribution file system layer supports a server system and at least one other communication terminal connected through a network to share a data file therebetween, an adaptation layer performs a contents conversion to use a data file in the communication terminal, the adaptation layer being placed on the distribution file system layer, and a virtual file system layer receives a system call message and transmits the system call message to the adaptation layer, the virtual file system layer being placed on the adaptation layer.

Abstract: A multiple mode terminal according to an exemplary embodiment of the present invention includes a mode controller, an application service unit, a common link module, and a plurality of device drivers. The mode controller uses network state monitoring information and controls the handoff between a plurality of networks. The application service unit includes protocols providing appropriate data communication services for the plurality of networks, and a plurality of programs designed to perform data communication services. The common link module performs the handoff between the heterogeneous networks by a handoff request of the mode controller, updates a transmission path of the data packet according to the performed handoff, and supports a data communication service of the application service unit. The plurality of device drivers control the terminal to function for the data service in the plurality of networks.

Abstract: A wet connection method for the precast concrete units capable of performing the connection of the units in a shorter time by electrically heating the concrete placed in the connection part. This method comprises the steps of connecting the reinforcing bars of the units to each other with a second conductive member of a conductive wire or net member in a space defined by the reinforcing bars, winding a conductive liner member around the connected reinforcing bars in order to provide a first conductive member, electrically connecting terminals of an electric power source to the first and second conductive members in such a manner that the polarities of the terminal and the conductive member are opposite to each other and applying electric power to the conductive members in order to cause the concrete placed in the connection part to be heated and rapidly cured. The present connection method shortens the curing time of the concrete and the term of work.