Patent ID: 8223594
Filing Date: 2012-07-17
Classification: G04C,G04F

Abstract:
1. A chronograph timepiece comprising: a time indication motor driving a time hand; a chronograph indication motor driving a chronograph hand; a magnetic field detecting unit detecting a magnetic field; a timekeeping unit effecting timekeeping; a chronograph measurement unit performing chronograph measurement; a motor drive unit which drives the chronograph indication motor and which normally drives the time indication motor with a normal drive pulse; and a control unit which controls the motor drive unit so as to drive the time indication motor and the chronograph indication motor with a predetermined timing, based respectively on timekeeping information obtained by the timekeeping unit and chronograph measurement information obtained by the chronograph measurement unit and which effects control such that the magnetic field detecting unit detects the magnetic field with a predetermined timing, wherein, when a drive timing for the chronograph indication motor and a magnetic field detection timing for the magnetic field detecting unit overlap each other, the control unit effects control such that the drive timing for the chronograph indication motor and the magnetic field detection timing for the magnetic field detecting unit do not overlap each other.