| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a technique for efficient use of resource of a portable terminal, thereby using various types of programs. <P>SOLUTION: A portable terminal 1 acquires, from a presence server 6, presence information of the user of the portable terminal 1 registered from the portable terminal 1 or an information terminal 4, and stores the use result of a program used in a period of acquiring the presence information, in association with the presence information. Then, when the presence information varies, the portable terminal 1 finishes and thereafter deletes a program under execution which is not used frequently, on the basis of the use result of the program, and downloads a program of many use results from an application server 5 and starts the program. <P>COPYRIGHT: (C)2013,JPO&INPIT |
