| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a radio terminal device capable of quickly switching a communication system to be used, and to provide a control method of the same. <P>SOLUTION: A mobile phone 1 switching a high-speed clock generation part 81 and a low-speed clock generation part 82 for use according to a type of communication processing in a communication system under use comprises: a storage part 70 for storing time information of a CDMA communication system when the communication processing of the CDMA communication system is switched to the communication processing of an LTE communication system; and a communication processing part 31 for correcting the stored time information of the CDMA communication system using the time measured by the LTE communication system, when the communication processing of the LTE communication system is switched to the communication processing of the CDMA communication system in the case that the time information of the CDMA communication system is stored and the high-speed clock generation part 81 is used in the LTE communication system. <P>COPYRIGHT: (C)2012,JPO&INPIT |
