公开(公告)号：US5696642A

公开(公告)日：1997-12-09

申请号：US351895

申请日：1994-12-08

申请人： Yo Sawamura ,  Toshihiro Tafuru

发明人： Yo Sawamura ,  Toshihiro Tafuru

IPC分类号： G11B15/467 ,  G11B15/473 ,  H02P29/00 ,  G11B21/04 ,  G05B19/29 ,  G11B5/52 ,  H02P5/17

CPC分类号： G11B15/4731 ,  G11B15/4673 ,  Y10S388/912

摘要： A circuit for controlling a rotating member is provided with an input capture register which reads out the value of a free running counter at a timing of an FG (frequency generated) pulse generated in accordance with a rotation of a rotating member. A central processing unit performs an interrupt operation based on a PG (phase generated) pulse generated in accordance with a rotation of the rotating member and an interrupt operation based on the FG pulse. A pulse width modulation circuit rotates the rotating member by use of a speed error signal and a phase error signal which are obtained by the interrupt operations of the central processing unit. A rotating member driver is also provided. The central processing unit calculates the phase error signal from an output of the input capture register based on an FG pulse generated after the generation of the PG pulse.

摘要翻译： 用于控制旋转构件的电路设置有输入捕获寄存器，其在根据旋转构件的旋转产生的FG（频率产生）脉冲的定时读出自由运行计数器的值。 中央处理单元基于根据旋转构件的旋转产生的PG（相位产生）脉冲和基于FG脉冲的中断操作来执行中断操作。 脉冲宽度调制电路通过使用通过中央处理单元的中断操作获得的速度误差信号和相位误差信号来旋转旋转构件。 还提供旋转构件驱动器。 中央处理单元基于在生成PG脉冲后产生的FG脉冲从输入捕捉寄存器的输出计算相位误差信号。

公开(公告)号：US06542097B1

公开(公告)日：2003-04-01

申请号：US09292564

申请日：1999-04-15

申请人： Toshihiro Tafuru

发明人： Toshihiro Tafuru

IPC分类号： H03M301

CPC分类号： H03M3/022

摘要： A data conversion device converts a series of digital signals into an analog signal. The device has a current selection circuit that can vary the direction and magnitude of the current it outputs and an integrating circuit that integrates the current supplied from the current selection circuit to output a voltage. The direction of the current is determined in accordance with the digital signals fed in. When the absolute value of the current is great, the value by which the absolute value of the current is increased is decreased, and the value by which the absolute value of the current is decreased is increased.

摘要翻译： 数据转换装置将一系列数字信号转换为模拟信号。 该器件具有可以改变其输出的电流的方向和幅度的电流选择电路和积分电路，其对从当前选择电路提供的电流进行积分以输出电压。 根据馈入的数字信号确定电流的方向。当电流的绝对值大时，电流的绝对值增加的值减小，绝对值的值 电流减少增加。

公开(公告)号：US06252533B1

公开(公告)日：2001-06-26

申请号：US09300391

申请日：1999-04-27

申请人： Toshihiro Tafuru

发明人： Toshihiro Tafuru

IPC分类号： H03M166

CPC分类号： H04M1/505

摘要： A data conversion device for synthesizing digital data composed of two or more components (of which each consists of a series of one-bit digital data) so as to output a single analog signal has: a switch circuit for selecting one of the components of the digital data at a time by dividing a predetermined period into intervals having predetermined lengths of time in accordance with a select signal; a timing generator for generating the select signal; a current feeding circuit for feeding a current that flows in one or another direction in accordance with the output of the switch circuit; and a current-to-voltage conversion circuit for converting the current into a voltage so as to produce an analog signal.

摘要翻译： 一种用于合成由两个或更多个组件（每个由一系列一位数字数据组成）以便输出单个模拟信号的数字数据的数据转换装置具有：一个开关电路，用于选择 通过根据选择信号将预定周期划分成具有预定时间长度的间隔，一次数字数据; 定时发生器，用于产生选择信号; 电流馈送电路，用于根据开关电路的输出馈送沿一个或另一个方向流动的电流; 以及用于将电流转换成电压以产生模拟信号的电流 - 电压转换电路。