| 摘要 |
<P>PROBLEM TO BE SOLVED: To secure power for keeping communication even when a battery capacity in one of a portable communication apparatus and a handheld information terminal, especially, in the handheld information terminal is reduced to be lower than a prescribed value. <P>SOLUTION: The handheld information terminal 10 detects the respective remaining battery amounts of a headset 20 (the portable communication apparatus) and the handheld information terminal 10, which are connected in a first radio link, in a prescribed period. When the detection values come to be not more than the respective regulation values, a hold guide message is transmitted to a communication party being connected in the first radio link (short range radio communication) so as to disconnect the first radio link, and the connected headset 20 is switched to prescribed communication destinations, i.e., a voice input 17-A and a voice output 17-B which are incorporated in the handheld information terminal 10. <P>COPYRIGHT: (C)2007,JPO&INPIT |
