Abstract:
There are provided a device and method for supporting an external device I/O using a mobile communication terminal that the mobile communication terminal held by an individual may be used as an I/O unit of the external device, which is driven by the external device, for example, a kiosk and a digital signage, rather than driven by the mobile communication terminal. Further, a plurality of users may simultaneously perform I/O of the external device using each of the mobile communication terminals held by the plurality of users.
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.