CELLULAR PHONE HAVING NAVIGATION FUNCTION, AND NAVIGATION METHOD FOR USING CELLULAR PHONE HAVING NAVIGATION FUNCTION

摘要

PROBLEM TO BE SOLVED: To improve precision in navigation that a cellular phone having navigation functions performs.;SOLUTION: The cellular phone 2 has a GPS unit 31 for specifying the current position by receiving electromagnetic waves from an artificial satellite, and performs navigation processing by calculating the current position. Then, a navigation processing section 30 for performing navigation processing has a means for receiving correction data regarding navigation processing from another device, such as a navigator terminal 3 or a measuring instrument 4 of vehicle speed pulses, and a means for detecting the connection of another device. Additionally, the cellular phone 2 is switched to perform navigation processing, based on the received correction data when another device is connected, and to perform navigation processing, based on the current position specified by a GPS unit 31 when another device is not being connected.;COPYRIGHT: (C)2005,JPO&NCIPI