Abstract: A data transceiver of a user terminal receives image data and sound data that are transmitted from a destination by streaming. A video chat processor of the user terminal reproduces the received data, thereby providing a communication device, a communication method, and a communication program that enable a user to easily and efficiently confirm, based on returned data, a reproduction quality of the image data and the sound data that are transmitted by streaming.

Abstract: To enable an input unit inputting information showing a contact position when in a first mode to be used as a pointing device inputting information showing a movement quantity of the contact position when in a second mode. Information is displayed on a display unit, a touch on a detection surface disposed in superposition on a display area of the display unit is detected, and a signal based on a contact status is inputted to a processing unit from an input unit, information given from the input unit is set as information showing a contact position when in a first mode and as information showing a movement quantity of the contact position when in a second mode, the signal is switched over.

Abstract: In order to provide a mobile communication apparatus that is capable of preventing a fraudulent access, via the mobile communication apparatus, to a data communication service intended for a mobile communication apparatus; a mobile communication apparatus 10 comprises, at least, communication connection unit 12a and 12b for connecting to a mobile communication network 11 and the like; communication unit 13 for performing data communication with the mobile communication network and the like via the communication connection unit 12; and communication control unit 14 for controlling the communication connection unit 11.

Abstract: A data transceiver of a user terminal receives image data and sound data that are transmitted from a destination by streaming. A video chat processor of the user terminal reproduces the received data, thereby providing a communication device, a communication method, and a communication program that enable a user to easily and efficiently confirm, based on returned data, a reproduction quality of the image data and the sound data that are transmitted by streaming.

Abstract: Unique data which can identify functions of a client or individual is assigned to the client and thus a server can determine based on this unique data whether the services can be provided or not. Moreover, unique user data is also added for authorization of the user to use the services.

Abstract: A home gateway which receives an e-mail and transmits a file as instructed by the e-mail, comprises: a mail receiver receiving an e-mail; a mail analyzer analyzing the e-mail received by the mail receiver and specifying a requested file for transmission; a file transmitter transmitting, to a web server on the Internet, the file specified by the mail analyzer; and a mail notification unit transmitting, to a terminal, an e-mail indicating that the file transmitter has transmitted the requested file to the web server.