发明授权
US06483356B2 Sinusoidal signal generating circuit providing small phase difference with respect to reference signal and apparatus for driving oscillating element with circuit
有权
正弦信号发生电路相对于参考信号提供小的相位差，以及用于驱动具有电路的振荡元件的装置
- 专利标题： Sinusoidal signal generating circuit providing small phase difference with respect to reference signal and apparatus for driving oscillating element with circuit
- 专利标题（中）： 正弦信号发生电路相对于参考信号提供小的相位差，以及用于驱动具有电路的振荡元件的装置
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申请号： US09966573申请日： 2001-09-26
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公开(公告)号： US06483356B2公开(公告)日： 2002-11-19
- 发明人: Hirohisa Suzuki , Masaaki Nishimura , Kazuo Hasegawa , Daisuke Takai
- 申请人： Hirohisa Suzuki , Masaaki Nishimura , Kazuo Hasegawa , Daisuke Takai
- 优先权： JP2000-293252 20000927
- 主分类号： H03B2800
- IPC分类号： H03B2800
摘要：
A sinusoidal signal generating circuit for ensuring a small phase difference with respect to a reference signal is provided. The sinusoidal signal generating circuit comprises a capacitor for charging/discharging, a charging unit for charging a predetermined current to the capacitor, and a discharging unit for discharging a current therefrom, whereby an output signal is produced by the change in the potential of the capacitor, wherein the charging unit comprises a charging current adjusting unit for adjusting the magnitude of the charging current, and the discharging unit comprises a discharging current adjusting unit for adjusting the magnitude of the discharging current, and a control signal generating means is provided for supplying a plurality of control signals to the charging current adjusting unit and the discharging current adjusting unit in such a manner that the potential of the capacitor is changed into a sinusoidal waveform. The sinusoidal signal generating circuit can be employed as a dividing means and a driving means in an apparatus for driving a vibrating element.
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