Abstract: In order to make it possible to select communication interface in accordance with features of access networks, the terminal includes a plurality of communication interfaces each of which corresponds to at least one of the plurality of networks. The terminal includes a communication means capable of selecting the communication interface through which communication with the connection destination is performed based on whether a network corresponding to each of the plurality of communication interfaces is communicable with the connection destination.

Abstract: A position information plot means 81 plots a position information log containing a user's measurement position and measurement date/time on a multidimensional space defined by numerical information indicating the measurement position and a time. A slay point cluster extraction means 82 weights the position information log so that a Euclidean distance in a time direction relative to a position information space is easily determined as short, and clusters the weighted position information logs thereby to extract a stay point where the user frequently stays. A moving path cluster extraction means 84 weights a position information log at a non-stay point so that a Euclidean distance in a time direction relative to a position information space is easily determined as long, and clusters the weighted position information logs thereby to extract a user's moving path.

Abstract: To make it possible to display an application that is suitable for specific circumstances of a specific user, from among a large number of applications, without complicating a rule file and without increasing its capacity. An application execution terminal acquires context information from received sensor information, acquires an arrangement display rule file that matches the acquired context information from among arrangement display rule files in which a category indicating a type of an application and a display position of the application are defined, analyzes a category defined by the acquired arrangement display rule file, acquires a list of applications that match the category, links the applications indicated by the list of the applications to the acquired arrangement display rule file, and arranges and displays the applications in accordance with a description of the arrangement display rule file.

Abstract: A half-duplex communication system that allows a user terminal to confirm past communication contents even during a series of half-duplex communications is provided. The system includes a communication record database in which all communication contents of half-duplex communications are stored together with identifiers thereof. A half-duplex communication device for controlling half-duplex communications includes a communication record control device which receives a communication content, transmits the communication content together with the identifier thereof to the communication record database so as to store it therein, and reads out the communication record therein. In response to a communication record readout request, the half-duplex communication device reads out a communication record in place of transmitting the communication content to a user terminal.

Abstract: A position information plot means 81 plots a position information log containing a user's measurement position and measurement date/time on a multidimensional space defined by numerical information indicating the measurement position and a time. A slay point cluster extraction means 82 weights the position information log so that a Euclidean distance in a time direction relative to a position information space is easily determined as short, and clusters the weighted position information logs thereby to extract a stay point where the user frequently stays. A moving path cluster extraction means 84 weights a position information log at a non-stay point so that a Euclidean distance in a time direction relative to a position information space is easily determined as long, and clusters the weighted position information logs thereby to extract a user's moving path.

Abstract: A software output destination handling terminal that handles a display terminal as a software output destination. Data indicating a type of the display terminal is received from the display terminal with which communication connection has been established, and data indicating a usage status of the user is obtained. Data indicating a display rule for a software application to be displayed under the usage status is obtained. In the rule, information designating the display terminal type is associated with information designating a category of the software application to be displayed at the display terminal having the type. Based on the rule, the category of the software application to be displayed at the relevant display terminal is specified. Based on the category, a software application belonging to the category is specified among software applications. Data indicating an instruction to the display terminal to display the software application is generated and sent thereto.

Abstract: A software output destination handling terminal that handles a display terminal as a software output destination. Data indicating a type of the display terminal is received from the display terminal with which communication connection has been established, and data indicating a usage status of the user is obtained. Data indicating a display rule for a software application to be displayed under the usage status is obtained. In the rule, information designating the display terminal type is associated with information designating a category of the software application to be displayed at the display terminal having the type. Based on the rule, the category of the software application to be displayed at the relevant display terminal is specified. Based on the category, a software application belonging to the category is specified among software applications. Data indicating an instruction to the display terminal to display the software application is generated and sent thereto.

Abstract: To make it possible to display an application that is suitable for specific circumstances of a specific user, from among a large number of applications, without complicating a rule file and without increasing its capacity. An application execution terminal acquires context information from received sensor information, acquires an arrangement display rule file that matches the acquired context information from among arrangement display rule files in which a category indicating a type of an application and a display position of the application are defined, analyzes a category defined by the acquired arrangement display rule file, acquires a list of applications that match the category, links the applications indicated by the list of the applications to the acquired arrangement display rule file, and arranges and displays the applications in accordance with a description of the arrangement display rule file.

Abstract: A half-duplex communication system that allows a user terminal to confirm past communication contents even during a series of half-duplex communications is provided. The system includes a communication record database in which all communication contents of half-duplex communications are stored together with identifiers thereof. A half-duplex communication device for controlling half-duplex communications includes a communication record control device which receives a communication content, transmits the communication content together with the identifier thereof to the communication record database so as to store it therein, and reads out the communication record therein. In response to a communication record readout request, the half-duplex communication device reads out a communication record in place of transmitting the communication content to a user terminal.