Nec Mobiling, Ltd.

Tomonari Yomoda

Toshio Yoshida

There is provided a portable electronic device capable of being immediately operated without the use of a battery even when the battery reaches exhaustion. An electricity generating unitis embedded in the portable electronic device. The electricity generating unithas a mechanism to pull out a pull linewound around a pulleyto wind up a spiral springand a mechanism to transfer torque occurring when the spiral springis released and to rotate the motor at high speed. An output voltage from the motoris adjusted and smoothed by a constant voltage circuit and is directly supplied as power to power consuming components. The portable electronic device connecting two flips can wind up the spiral springby opening and closing the two flips.

Adjusting voltage provided by battery within portable electronic device

Vehicles or ships each carry a magnetic force line sensor, a GPS position detector, and a data transmitter and travel within an observation area transmitting magnetic field data and position data to an earthquake prediction center. A telluric current induction field estimation unit of the earthquake prediction center estimates telluric current induction fields based on the received observation data. A telluric current estimation unit estimates telluric currents based on the results of estimating the telluric current induction fields. A telluric current induction field intensity change pattern generation unit generates patterns indicating the change over time of the intensity of telluric current induction fields. An earthquake prediction unit analyzes the state of distribution of the telluric currents and the patterns of change in the intensities of the telluric current induction fields and estimates a seismofocal zone, seismic intensity, and time of occurrence of a seismic event.

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Kanagawa, Japan

Tomonari Yomoda