公开(公告)号：US20110121907A1

公开(公告)日：2011-05-26

申请号：US11984984

申请日：2007-11-26

申请人： Masahiro Kanai ,  Naoki Yoshida ,  Eitaro Otsuka

发明人： Masahiro Kanai ,  Naoki Yoshida ,  Eitaro Otsuka

IPC分类号： H03L5/00 ,  G01R25/00

CPC分类号： G01C19/56 ,  G01C19/5776 ,  H03K3/0231 ,  H03L5/00

摘要： A driver device that forms an oscillation loop with a vibrator and causes the vibrator to produce driving vibrations includes a current-voltage converter that converts a current that flows through the vibrator into a voltage, an output circuit that causes the vibrator to produce the driving vibrations based on a signal that is converted into a voltage with respect to a given voltage, and a high-pass filter that is provided in the oscillation loop between the current-voltage converter and the output circuit. The driver device causes the vibrator to produce the driving vibrations while changing a reference potential of the high-pass filter, and then causes the vibrator to produce the driving vibrations while fixing the reference potential.

公开(公告)号：US20080178672A1

公开(公告)日：2008-07-31

申请号：US11882203

申请日：2007-07-31

申请人： Masahiro Kanai ,  Eitaro Otsuka ,  Naoki Yoshida

发明人： Masahiro Kanai ,  Eitaro Otsuka ,  Naoki Yoshida

IPC分类号： G01P3/44 ,  H03B5/30

CPC分类号： H03B5/36 ,  G01C19/5649 ,  G01P15/097 ,  H03B5/06 ,  H03B5/364 ,  H03B2200/0094

摘要： An oscillation driver circuit includes a gain control amplifier which causes a vibrator to produce driving vibrations by controlling an oscillation amplitude in an oscillation loop, and a comparator which generates a synchronous detection reference signal based on a signal in the oscillation loop. The oscillation driver circuit sets a gain in a first oscillation loop including the vibrator and the comparator to be larger than unity using an output from the comparator, and then causes the vibrator to produce the driving vibrations by controlling an oscillation amplitude in a second oscillation loop including the vibrator and the gain control amplifier in at least one of an oscillation startup state and a sleep mode.

摘要翻译： 振荡驱动器电路包括增益控制放大器，其通过控制振荡回路中的振荡幅度使振动器产生驱动振动;以及比较器，其基于振荡回路中的信号产生同步检测参考信号。 振荡驱动电路使用比较器的输出，将包括振子和比较器在内的第一振荡回路的增益设定为大于1，然后通过控制第二振荡回路中的振荡振幅，使振动器产生驱动振动 包括在振荡启动状态和睡眠模式中的至少一个中的振动器和增益控制放大器。

公开(公告)号：US20080105054A1

公开(公告)日：2008-05-08

申请号：US11979442

申请日：2007-11-02

申请人： Masahiro Kanai ,  Naoki Yoshida ,  Eitaro Otsuka

发明人： Masahiro Kanai ,  Naoki Yoshida ,  Eitaro Otsuka

IPC分类号： G01P9/04 ,  G01P15/097 ,  H03B5/36

CPC分类号： G01P15/097 ,  G01C19/5649 ,  H03B5/06 ,  H03B5/36 ,  H03B2200/0046

摘要： A driver device includes a gain control amplifier that causes a vibrator to produce driving vibrations by controlling an oscillation amplitude in an oscillation loop, a signal generation circuit that generates a signal having a given frequency, and a modulation circuit that modulates the frequency of the signal generated by the signal generation circuit to a resonance frequency of the vibrator. The driver device causes the vibrator to produce the driving vibrations using the signal modulated by the modulation circuit, and then causes the vibrator to produce the driving vibrations by controlling the oscillation amplitude in the oscillation loop formed by the vibrator and the gain control amplifier.

摘要翻译： 驱动器装置包括：增益控制放大器，其通过控制振荡回路中的振荡幅度使振动器产生驱动振动，产生具有给定频率的信号的信号产生电路和调制信号频率的调制电路 由信号发生电路生成到振动器的共振频率。 驱动装置使振动器使用由调制电路调制的信号产生驱动振动，然后通过控制由振动器和增益控制放大器形成的振荡回路中的振荡振幅，使振动器产生驱动振动。

公开(公告)号：US07868623B2

公开(公告)日：2011-01-11

申请号：US12155383

申请日：2008-06-03

申请人： Naoki Yoshida ,  Masahiro Kanai ,  Eitaro Otsuka

发明人： Naoki Yoshida ,  Masahiro Kanai ,  Eitaro Otsuka

IPC分类号： G01R31/02 ,  G01P15/10

CPC分类号： G01P15/08 ,  G01C19/56 ,  G01C19/5649 ,  G01D3/02 ,  G01D18/00 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45138 ,  H03F2203/45526 ,  H03F2203/45616

摘要： A detection circuit includes a detection terminal to which an alternating current signal from a physical quantity transducer is input, a detection current/voltage conversion amplifier circuit that converts the alternating current signal input through the detection terminal into a voltage signal, an evaluation terminal that supplies an evaluation voltage signal to the detection current/voltage conversion amplifier circuit, an input resistor that has a given resistance ratio with respect to a feedback resistor; and a switch circuit of the detection circuit provided in a signal path that connects the evaluation terminal and an input node of the detection current/voltage conversion amplifier circuit.

摘要翻译： 检测电路包括：输入来自物理量换能器的交流信号的检测端子;将通过检测端子输入的交流信号转换为电压信号的检测电流/电压转换放大电路;供给 对检测电流/电压转换放大器电路的评估电压信号，相对于反馈电阻具有给定电阻比的输入电阻; 以及检测电路的开关电路，设置在连接评估终端和检测电流/电压转换放大器电路的输入节点的信号路径中。

公开(公告)号：US07849746B2

公开(公告)日：2010-12-14

申请号：US11984977

申请日：2007-11-26

申请人： Masahiro Kanai ,  Naoki Yoshida ,  Eitaro Otsuka

发明人： Masahiro Kanai ,  Naoki Yoshida ,  Eitaro Otsuka

IPC分类号： G01N29/036 ,  H03L1/00 ,  G01H13/00 ,  G01P1/04

CPC分类号： G01P15/097 ,  G01C19/56 ,  G01C19/5649 ,  H03B5/364 ,  H03B2200/0094

摘要： A driver device that forms an oscillation loop with a vibrator and causes the vibrator to produce driving vibrations includes a current-voltage converter that is provided in the oscillation loop and converts a current that flows through the vibrator into a voltage, and a GCA as a comparator that is provided in the oscillation loop and outputs a signal corresponding to a comparison result between an output from the current-voltage converter and a given voltage. The GCA outputs a first high-level voltage or a low-level voltage during oscillation startup, and outputs a second high-level voltage or the low-level voltage in a steady oscillation state. The first high-level voltage is a voltage higher in potential than the second high-level voltage.

摘要翻译： 用振动器形成振荡回路并使振动器产生驱动振动的驱动器装置包括设置在振荡回路中的电流 - 电压转换器，并将流过振动器的电流转换为电压，将GCA转换为 比较器，其设置在振荡回路中，并输出与电流 - 电压转换器的输出与给定电压之间的比较结果相对应的信号。 GCA在振荡启动期间输出第一高电平或低电平，并在稳定振荡状态下输出第二高电平或低电平电压。 第一高电平电压是电位高于第二高电平的电压。

公开(公告)号：US07808334B2

公开(公告)日：2010-10-05

申请号：US12177607

申请日：2008-07-22

申请人： Naoki Yoshida ,  Masahiro Kanai ,  Eitaro Otsuka

发明人： Naoki Yoshida ,  Masahiro Kanai ,  Eitaro Otsuka

IPC分类号： H03L5/00 ,  H03B5/36 ,  G01P15/09

CPC分类号： G01F1/8431 ,  G01F1/8422

摘要： An oscillation driver circuit that drives a physical quantity transducer includes a one-input/two-output comparator. The one-input/two-output comparator includes a shared differential section that compares a voltage signal input from a drive current/voltage conversion amplifier circuit with a given voltage, a first output section that receives a signal output from the differential section, variably adjusts a voltage amplitude of the received signal, and outputs the resulting signal, and a second output section that receives the signal output from the differential section, and outputs a synchronous detection reference signal of which the voltage amplitude is fixed.

摘要翻译： 驱动物理量传感器的振荡驱动器电路包括一个输入/双输出比较器。 单输入/双输出比较器包括共用差分部分，其将从驱动电流/电压转换放大器电路输入的电压信号与给定电压进行比较，接收从差分部分输出的信号的第一输出部分可变地调整 接收信号的电压振幅，并输出结果信号;以及第二输出部，其接收从差分部输出的信号，并输出电压幅度固定的同步检波基准信号。

公开(公告)号：US20090013785A1

公开(公告)日：2009-01-15

申请号：US12155383

申请日：2008-06-03

申请人： Naoki Yoshida ,  Masahiro Kanai ,  Eitaro Otsuka

发明人： Naoki Yoshida ,  Masahiro Kanai ,  Eitaro Otsuka

IPC分类号： G01P15/00

CPC分类号： G01P15/08 ,  G01C19/56 ,  G01C19/5649 ,  G01D3/02 ,  G01D18/00 ,  H03F3/45475 ,  H03F2200/261 ,  H03F2203/45138 ,  H03F2203/45526 ,  H03F2203/45616

摘要： A detection circuit includes a detection terminal to which an alternating current signal from a physical quantity transducer is input, a detection current/voltage conversion amplifier circuit that converts the alternating current signal input through the detection terminal into a voltage signal, an evaluation terminal that supplies an evaluation voltage signal to the detection current/voltage conversion amplifier circuit, an input resistor that has a given resistance ratio with respect to a feedback resistor; and a switch circuit of the detection circuit provided in a signal path that connects the evaluation terminal and an input node of the detection current/voltage conversion amplifier circuit.

摘要翻译： 检测电路包括：输入来自物理量换能器的交流信号的检测端子;将通过检测端子输入的交流信号转换为电压信号的检测电流/电压转换放大电路;供给 对检测电流/电压转换放大器电路的评估电压信号，相对于反馈电阻具有给定电阻比的输入电阻; 以及检测电路的开关电路，设置在连接评估终端和检测电流/电压转换放大器电路的输入节点的信号路径中。

公开(公告)号：US07895894B2

公开(公告)日：2011-03-01

申请号：US11979442

申请日：2007-11-02

申请人： Masahiro Kanai ,  Naoki Yoshida ,  Eitaro Otsuka

发明人： Masahiro Kanai ,  Naoki Yoshida ,  Eitaro Otsuka

IPC分类号： H03B5/36 ,  H03B5/32 ,  G01N27/00 ,  H03L5/00

CPC分类号： G01P15/097 ,  G01C19/5649 ,  H03B5/06 ,  H03B5/36 ,  H03B2200/0046

摘要： A driver device includes a gain control amplifier that causes a vibrator to produce driving vibrations by controlling an oscillation amplitude in an oscillation loop, a signal generation circuit that generates a signal having a given frequency, and a modulation circuit that modulates the frequency of the signal generated by the signal generation circuit to a resonance frequency of the vibrator. The driver device causes the vibrator to produce the driving vibrations using the signal modulated by the modulation circuit, and then causes the vibrator to produce the driving vibrations by controlling the oscillation amplitude in the oscillation loop formed by the vibrator and the gain control amplifier.

摘要翻译： 驱动器装置包括：增益控制放大器，其通过控制振荡回路中的振荡幅度使振动器产生驱动振动，产生具有给定频率的信号的信号产生电路和调制信号频率的调制电路 由信号发生电路生成到振动器的共振频率。 驱动装置使振动器使用由调制电路调制的信号产生驱动振动，然后通过控制由振动器和增益控制放大器形成的振荡回路中的振荡振幅，使振动器产生驱动振动。

公开(公告)号：US07812681B2

公开(公告)日：2010-10-12

申请号：US11907483

申请日：2007-10-12

申请人： Masahiro Kanai ,  Eitaro Otsuka ,  Naoki Yoshida ,  Akihiro Fukuzawa

发明人： Masahiro Kanai ,  Eitaro Otsuka ,  Naoki Yoshida ,  Akihiro Fukuzawa

IPC分类号： H03B5/36

CPC分类号： G01P15/097 ,  G01C19/5649

摘要： An oscillation driver circuit includes a gain control amplifier which causes a vibrator to produce driving vibrations by controlling an oscillation amplitude in an oscillation loop, and a comparator which generates a synchronous detection reference signal based on a signal in the oscillation loop. The comparator has an output current limiting function. The oscillation driver circuit causes the vibrator to produce vibrations using an output from the comparator in a state in which the gain in an oscillation loop formed by the vibrator and the comparator is set to be larger than unity, and then causes the vibrator to produce the driving vibrations by controlling an oscillation amplitude in an oscillation loop formed by the vibrator and the gain control amplifier.

摘要翻译： 振荡驱动器电路包括增益控制放大器，其通过控制振荡回路中的振荡幅度使振动器产生驱动振动;以及比较器，其基于振荡回路中的信号产生同步检测参考信号。 比较器具有输出电流限制功能。 在振荡器和比较器所形成的振荡环路中的增益被设定为大于1的状态下，振荡器电路使得振荡器产生振动，使用比较器的输出产生振动， 通过控制由振动器和增益控制放大器形成的振荡回路中的振荡振幅来驱动振动。

公开(公告)号：US07692506B2

公开(公告)日：2010-04-06

申请号：US12181011

申请日：2008-07-28

申请人： Masahiro Kanai ,  Eitaro Otsuka ,  Naoki Yoshida

发明人： Masahiro Kanai ,  Eitaro Otsuka ,  Naoki Yoshida

IPC分类号： G01N27/00 ,  G01P15/09 ,  H03B5/32 ,  H03B5/36 ,  H03L5/00

CPC分类号： H03B5/04 ,  H03B5/36

摘要： An oscillation driver device includes a gain control amplifier, an automatic gain control circuit, and a mode setting circuit. When the mode setting circuit has switched a mode from a normal operation mode to a low power consumption mode, the automatic gain control circuit is disabled, and the gain in an oscillation loop that drives the vibrator changes from a state in which the gain in the oscillation loop is controlled to be unity by the automatic gain control circuit to a state in which the gain in the oscillation loop is set to be larger than unity. When the mode setting circuit has switched the mode from the low power consumption mode to the normal operation mode, the automatic gain control circuit resumes operation, and the gain in the oscillation loop changes from the state in which the gain in the oscillation loop is set to be larger than unity to the state in which the gain in the oscillation loop is controlled to be unity by the automatic gain control circuit.

摘要翻译： 振荡驱动器装置包括增益控制放大器，自动增益控制电路和模式设定电路。 当模式设置电路将模式从正常操作模式切换到低功耗模式时，自动增益控制电路被禁用，并且驱动振动器的振荡回路中的增益从其中的增益改变 通过自动增益控制电路将振荡回路控制为一体，使振荡回路中的增益设定为大于1。 当模式设置电路将模式从低功耗模式切换到正常操作模式时，自动增益控制电路恢复运行，并且振荡环路中的增益从设置在振荡环路中的增益的状态变化 大于通过自动增益控制电路将振荡环路中的增益控制为1的状态的单位。