Abstract: The present disclosure relates to an offset elimination operation of an internal operational amplifier of a data driving circuit and relates to a technique that applies different offset elimination methods for each position of an operational amplifier.

Abstract: The present disclosure relates to a management system for personal health record, and more particularly, to a management system for personal health record, which restricts an access to a personal health record according to user authentication, allows online and offline management of a personal health record, and provides multicasting.

Abstract: The present invention relates to a portable device for storing personal health records and a method for controlling the same, and more particularly, to a portable device for storing personal health records and a method for controlling the same in which user authentication is performed in order to personally manage health records and utilization of data is selected according to a result of the user authentication.

Abstract: A steel structure including pre-stressing brackets for improving load-carrying capacity and serviceability comprises: a steel girder; a plurality of connecting brackets connected to the bottom surface of the steel girder spaced and apart from one; and a cover plate connected to the bottom surfaces of the connecting brackets. Since the cover plate is installed regardless of the connecting portion of the steel girder, pre-stressing section can be consecutively formed therefore pre-stress effect is improved. Moreover, since the connecting brackets space the cover plate a constant distance from the steel girder, the moment of inertia is increased so the span of a bridge might be increased.

Abstract: A steel structure including pre-stressing brackets for improving load-carrying capacity and serviceability comprises: a steel girder; a plurality of connecting brackets connected to the bottom surface of the steel girder spaced and apart from one; and a cover plate connected to the bottom surfaces of the connecting brackets. Since the cover plate is installed regardless of the connecting portion of the steel girder, pre-stressing section can be consecutively formed therefore pre-stress effect is improved. Moreover, since the connecting brackets space the cover plate a constant distance from the steel girder, the moment of inertia is increased so the span of a bridge might be increased.

Abstract: Streaming multimedia content from a content server to client, user multimedia devices (UMDs) connected to the content server through a network includes the steps of monitoring storage states, of UMDs connected to the network, for preset multimedia content, and automatically transmitting a starting block of the content to any UMD not yet storing the block. Tasks preparatory to streaming are advantageously off-loaded to the client side and distributed among UMDs, to realize reduced bandwidth and delay and to conserve on storage capacity of a UMD.

Abstract: A method and apparatus for performing fast authentication for a vertical handover are provided. The method includes requesting a handover from a serving network to a target network and generating a derivative Master Session Key (MSK) for key generation, and transmitting the derivative MSK to the target network. Accordingly, a key negotiation process can start by skipping an access authentication process. Therefore, there is an advantage in that a fast authentication process can be achieved.

Abstract: A header compression in a broadband wireless communication system is provided. A transmitter includes a compressor for compressing a header of a packet; a processor for appending a compression channel IDentifier (ID) to the packet; and a controller for identifying a Service Flow (SF) corresponding to the compression channel ID and processing the packet according to the SF. Accordingly, by using the ID of the compression channel in the header compression, the SF can be identified even in the header compression.

Abstract: Streaming multimedia content from a content server to client, user multimedia devices (UMDs) connected to the content server through a network includes the steps of monitoring storage states, of UMDs connected to the network, for preset multimedia content, and automatically transmitting a starting block of the content to any UMD not yet storing the block. Tasks preparatory to streaming are advantageously off-loaded to the client side and distributed among UMDs, to realize reduced bandwidth and delay and to conserve on storage capacity of a UMD.