Patent ID: 6452358
Filing Date: 2002-09-17
Classification: G04C

Abstract:
An electronic apparatus comprising:a power generator portion for performing power generation; a storage portion for storing electric energy obtained by said power generation; at least one motor driven by the electric energy stored in said storage portion; a pulse driving controller for controlling the driving of said motor by outputting a driving pulse signal; a rotation detecting portion for detecting whether said motor has rotated by comparing a rotation detecting voltage corresponding to an induction voltage generated in said motor caused by the rotation of said motor with a rotation reference voltage; a state detecting portion for detecting a generation state of said power generator portion or a charging state of said storage portion caused by said power generation; and a voltage setting portion for setting said rotation detecting voltage or said rotation reference voltage based on the generation state of said power generator portion or said charging state of said storage portion detected by said state detecting portion so that a difference between said rotation detecting voltage when said motor has not rotated and said rotation reference voltage is increased.