Development of a GPS Hybrid Radio-Controlled Solar-Powered Watch

Abstract

  We have developed a solar powered watch which has hybrid timekeeping system by combining both GPS signal and the long wave radio signal reception capability. We have reduced the GPS power consumption so that the battery has been downsized. We also achieved the hybrid timekeeping system by developing GPS and radio signal reception algorithm, and by high-density packaging design. This hybrid watch will give users more chance to receive the exact time information than before.