| 摘要 |
<P>PROBLEM TO BE SOLVED: To use portable equipment which attains one function as a whole by operating each individual functional part upon performing authentication processing by short-range communication by a plurality of modules for a long time by power of a battery without spoiling convenience. <P>SOLUTION: When a first module and a second module in the plurality of modules 110-150 perform the authentication processing by the short-range communication, the first module detects the remaining power of the battery 101 of the self-module, and when the remaining power exceeds a predetermined amount, supplies power for performing an authentication operation to the second module. <P>COPYRIGHT: (C)2011,JPO&INPIT |
