Abstract: A GPS positioning method is disclosed which can shorten the time required until positioning arithmetic operation is started after power is made available. An oscillation frequency of a reference frequency oscillator used in a GPS receiver section or a frequency variation of the oscillation frequency is measured using high precision frequency information provided by a standard wave. A result of the measurement is utilized to catch a signal from a GPS satellite. Further, a synchronization timing of a spread code of the spread spectrum signal from the satellite is detected to detect a small time component for time synchronization. After synchronization of the spread code is completed, a time of the boundary of one period of the spread code is detected from time information provided by a standard wave, and a time component greater than the small time component for time synchronization is detected based on the time of the boundary.

Abstract: A mobile device is provided. The mobile device provides simple connection with a mobile device unit, resistant to noise from the mobile device unit, and enabling a GPS function to be fully exhibited, wherein a first integrated circuit IC21 mounting a GPS receiver and GPS antenna and a second integrated circuit IC22 mounting a controller control circuit are housed in a controller unit, the controller unit is provided with a headphone jack and a music/speech terminal-GPS terminal to be connected to the mobile device unit, and the terminal is inserted into the mobile device unit to supply power source voltage from the mobile device unit side and enable the controller and GPS function to be used.

Abstract: A mobile device is provided. The mobile device provides simple connection with a mobile device unit, resistant to noise from the mobile device unit, and enabling a GPS function to be fully exhibited, wherein a first integrated circuit IC21 mounting a GPS receiver and GPS antenna and a second integrated circuit IC22 mounting a controller control circuit are housed in a controller unit, the controller unit is provided with a headphone jack and a music/speech terminal-GPS terminal to be connected to the mobile device, and the terminal is inserted into the mobile device unit to supply power source voltage from the mobile device unit side and enable the controller and GPS function to be used.