公开(公告)号：US08172373B2

公开(公告)日：2012-05-08

申请号：US12724816

申请日：2010-03-16

申请人： Atsushi Oshima ,  Shinichi Miyazaki ,  Kunio Tabata ,  Nobuaki Azami ,  Hiroyuki Yoshino ,  Noritaka Ide

发明人： Atsushi Oshima ,  Shinichi Miyazaki ,  Kunio Tabata ,  Nobuaki Azami ,  Hiroyuki Yoshino ,  Noritaka Ide

IPC分类号： B41J2/045

CPC分类号： B41J2/04581 ,  B41J2/04541 ,  B41J2/04555 ,  B41J2/0457

摘要： A fluid ejection device including, a drive element capable of storing a charge depending on a voltage applied to the drive element, a first capacitor, a second capacitor, and a power recovery module that recovers power from the drive element by connecting the first capacitor and the second capacitor to the drive element in series, wherein the power recovery module switches the first capacitor out of the in-series connection to further recover power from the drive element.

摘要翻译： 一种流体喷射装置，包括：能够根据施加到驱动元件的电压存储电荷的驱动元件，第一电容器，第二电容器和功率恢复模块，其通过连接第一电容器和第二电容器来恢复来自驱动元件的电力; 所述驱动元件串联的所述第二电容器，其中所述功率恢复模块将所述第一电容器切换为所述串联连接，以进一步从所述驱动元件恢复功率。

公开(公告)号：US07880539B2

公开(公告)日：2011-02-01

申请号：US12615744

申请日：2009-11-10

申请人： Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide ,  Shinichi Miyazaki ,  Hiroyuki Yoshino ,  Nobuaki Azami

发明人： Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide ,  Shinichi Miyazaki ,  Hiroyuki Yoshino ,  Nobuaki Azami

IPC分类号： H03F3/38

CPC分类号： H03F3/217 ,  B41J2/04541 ,  B41J2/04568 ,  B41J2/04581 ,  B41J2/04588 ,  B41J2/04593 ,  B41J2/04596

摘要： A power amplifier includes: a modulator pulse-modulating a drive waveform signal serving as a reference of a drive signal applied to actuators and outputting a modulated signal; a digital power amplifier amplifying the power of the modulated signal and outputting an amplified digital signal; a low pass filter smoothing the amplified digital signal and outputting the drive signal; and an inverse filter circuit being disposed at a front stage of the modulator and capable of obtaining a desired waveform precision of the drive signal even when a frequency characteristic of a filter including the low pass filter and an electrostatic capacitor of the actuators varies depending on the number of driven actuators, wherein the inverse filter circuits include a plurality of inverse filters connected in series.

摘要翻译： 功率放大器包括：调制器，用于对驱动波形信号进行脉冲调制，所述驱动波形信号用作施加到致动器的驱动信号的参考，并输出调制信号; 数字功率放大器，放大调制信号的功率并输出放大的数字信号; 低通滤波器平滑放大的数字信号并输出​​驱动信号; 并且反相滤波器电路设置在调制器的前级，并且即使当包括低通滤波器的滤波器和致动器的静电电容器的频率特性根据所述驱动信号的频率特性变化时，也能够获得所需的驱动信号的波形精度 驱动致动器的数量，其中逆滤波器电路包括串联连接的多个反相滤波器。

公开(公告)号：US08773098B2

公开(公告)日：2014-07-08

申请号：US13420679

申请日：2012-03-15

申请人： Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide

发明人： Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide

IPC分类号： H02M3/156

CPC分类号： H03K3/012 ,  B41J2/04541 ,  B41J2/04581 ,  H02M3/156 ,  H02M3/157

摘要： Operation of a digital power amplifier for power amplification of a modulated signal is stopped in a period in which a voltage value of a drive signal applied to a capacitive load is constant, to thereby suppress power loss. The power amplification is stopped either when half a period of time when the modulated signal in a first voltage state maintains the first voltage state elapses or when half a period of time when the modulated signal in a second voltage state which is lower in voltage than the first voltage state maintains the second voltage state elapses. Accordingly, when electric current does not flow in a inductor of a low pass filter, it is possible to stop the power amplification. Thus, it is possible to prevent generation of voltage fluctuation in the drive signal due to an electromotive force caused by a self-induction phenomenon of the inductor.

摘要翻译： 在施加到电容性负载的驱动信号的电压值恒定的时段内停止用于调制信号的功率放大的数字功率放大器的操作，从而抑制功率损耗。 当第一电压状态下的调制信号保持第一电压状态或当电压低于第二电压状态的第二电压状态的调制信号的半个时间段的半个时间段停止功率放大， 第一电压状态保持第二电压状态已经过去。 因此，当电流不在低通滤波器的电感器中流动时，可以停止功率放大。 因此，可以防止由电感器的自感现象引起的电动势引起的驱动信号中的电压波动的产生。

公开(公告)号：US08757749B2

公开(公告)日：2014-06-24

申请号：US13351770

申请日：2012-01-17

申请人： Atsushi Oshima ,  Kunio Tabata ,  Noritaka Ide ,  Hiroyuki Yoshino

发明人： Atsushi Oshima ,  Kunio Tabata ,  Noritaka Ide ,  Hiroyuki Yoshino

IPC分类号： B41J29/38 ,  B41J2/045

CPC分类号： B05B12/02 ,  A61J3/07 ,  B41J2/04541 ,  B41J2/04548 ,  B41J2/04581 ,  B41J2/17503

摘要： A liquid ejection device, includes: a drive waveform signal output circuit which outputs a drive waveform signal to serve as a reference for the drive signal; a modulator which pulse-modulates the drive waveform signal and thus generates a first modulated signal and a second modulated signal having a different phase from the first modulated signal within a range from greater than 90 degrees to smaller than 270 degrees; a first digital power amplifier; a second digital power amplifier a first low pass filter which performs low pass filtering of the first amplified digital signal and thus generates a first demodulated signal; and a second low pass filter which performs low pass filtering of the second amplified digital signal and thus generates a second demodulated signal; wherein the first demodulated signal and the second demodulated signal are combined and applied as the drive signal to the capacitive load.

摘要翻译： 一种液体喷射装置，包括：驱动波形信号输出电路，其输出用作驱动信号的基准的驱动波形信号; 调制器，其在大于90度至小于270度的范围内脉冲调制驱动波形信号，从而产生具有与第一调制信号不同相位的第一调制信号和第二调制信号; 第一个数字功率放大器; 第二数字功率放大器，对所述第一放大数字信号进行低通滤波并由此产生第一解调信号的第一低通滤波器; 以及第二低通滤波器，对第二放大数字信号进行低通滤波，从而产生第二解调信号; 其中第一解调信号和第二解调信号被组合并作为驱动信号施加到电容性负载。

公开(公告)号：US09174435B2

公开(公告)日：2015-11-03

申请号：US13570867

申请日：2012-08-09

申请人： Hiroyuki Yoshino ,  Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide

发明人： Hiroyuki Yoshino ,  Kunio Tabata ,  Atsushi Oshima ,  Noritaka Ide

IPC分类号： B41J2/045 ,  B41J2/175

CPC分类号： B41J2/04541 ,  A61B17/3203 ,  A61B2017/00402 ,  A61B2017/32032 ,  B05B17/0653 ,  B41J2/04581 ,  B41J2/175

摘要： A liquid ejecting device includes a driving waveform signal generating circuit that generates a driving waveform signal, a modulation circuit that performs pulse modulation on the driving waveform signal to generate a modulation signal, a digital power amplifier that amplifies power of the modulation signal to generate a power amplification modulation signal in the form of a pulse wave, a filter that smoothes the power amplification modulation signal in the pulse wave to generate the driving signal, a connection cable that connects the filter to the capacitive load and is provided such that at least one of the filter and the capacitive load is detachable, a connection line information acquiring unit that acquires connection line information associated with the connection cable, and a frequency changing unit that changes a frequency when the modulation circuit performs the pulse modulation on the driving waveform signal, on the basis of the connection line.

摘要翻译： 液体喷射装置包括产生驱动波形信号的驱动波形信号产生电路，对驱动波形信号进行脉冲调制以产生调制信号的调制电路，放大调制信号的功率以产生调制信号的数字功率放大器 脉冲波形式的功率放大调制信号，使脉冲波中的功率放大调制信号平滑以产生驱动信号的滤波器，将滤波器连接到电容性负载的连接电缆，并提供至少一个 滤波器和容性负载可拆卸的连接线信息获取单元，其获取与连接电缆相关联的连接线信息;以及频率改变单元，其在调制电路对驱动波形信号执行脉冲调制时改变频率， 在连接线的基础上。

公开(公告)号：US08653718B2

公开(公告)日：2014-02-18

申请号：US13464638

申请日：2012-05-04

申请人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino

发明人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino

IPC分类号： H01L41/08

CPC分类号： H02N2/181 ,  H01L41/1136

摘要： A power generation unit includes: a deformation member which is deformed by switching a deformation direction; a piezoelectric element which is installed to the deformation member; a pair of electrodes which are installed to the piezoelectric element; an inductor which is installed between the pair of the electrodes and which together with a capacitive component of the piezoelectric element constitutes a resonance circuit; a switch which is connected in series to the inductor; a full bridge rectifier which is installed between the pair of the electrodes to rectify an AC current generated by the piezoelectric element; a voltage detection circuit which detects potentials of an anode and cathode of a diode included in the full bridge rectifier; and a controller which allows the switch to be in an ON state for a predetermined time interval based on an output signal of the voltage detection circuit.

摘要翻译： 发电单元包括：通过切换变形方向而变形的变形构件; 安装在变形构件上的压电元件; 安装在压电元件上的一对电极; 安装在一对电极之间并与压电元件的电容部件一起构成谐振电路的电感器; 与电感器串联连接的开关; 全桥整流器，安装在一对电极之间，以对由压电元件产生的交流电进行整流; 电压检测电路，其检测包括在全桥整流器中的二极管的阳极和阴极的电位; 以及控制器，其基于电压检测电路的输出信号使开关处于接通状态达预定时间间隔。

公开(公告)号：US08604673B2

公开(公告)日：2013-12-10

申请号：US13298999

申请日：2011-11-17

申请人： Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Atsuya Hirabayashi

发明人： Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Atsuya Hirabayashi

IPC分类号： H01L41/08

CPC分类号： H02N2/181 ,  H01L41/1136 ,  H02N2/186

摘要： A power generating device which includes a transformation member that is transformed by receiving a transformation force in a transformation direction, a first piezoelectric device that is disposed on the transformation member, a second piezoelectric device that is disposed on the transformation member, an inductor comprising a resonance circuit including the first piezoelectric device, a switch that is disposed in the resonance circuit, and a control unit that controls the switch to be in a conductive state for a predetermined period by detecting a voltage generated in the second piezoelectric device as the second piezoelectric device is transformed in response to the transformation force being applied to the transformation member.

摘要翻译： 一种发电装置，包括通过接收变换方向的变换力而变形的变换构件，配置在变换构件上的第一压电装置，配置在变换构件上的第二压电装置，电感器，包括： 谐振电路，包括第一压电器件，布置在谐振电路中的开关，以及控制单元，其通过检测在第二压电器件中产生的电压作为第二压电器来控制开关处于导通状态一段预定时间段 响应于施加到转换构件的变换力而转换装置。

公开(公告)号：US08604666B2

公开(公告)日：2013-12-10

申请号：US13295932

申请日：2011-11-14

申请人： Kunio Tabata ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Atsushi Oshima

发明人： Kunio Tabata ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Atsushi Oshima

IPC分类号： H01L41/08

CPC分类号： H02N2/181 ,  H01L41/1136

摘要： A power generating device includes: a piezoelectric member that is formed from a piezoelectric material; one pair of electrodes that are installed to the piezoelectric member; a transformation unit that repeatedly transforms the piezoelectric member; an inductor that is installed between the one pair of electrodes and configures a resonance circuit together with a capacitive component of the piezoelectric member; a switch that is connected to the inductor in series; and a switch control unit that connects the switch when a transformation direction of the piezoelectric member is switched, and cuts off the switch when a time corresponding to a half period of a resonance period of the resonance circuit elapses.

摘要翻译： 发电装置包括：由压电材料形成的压电元件; 安装在压电元件上的一对电极; 变换单元，其重复地变换压电构件; 电感器，其安装在所述一对电极之间，并且与所述压电部件的电容部件一起构成谐振电路; 串联连接到电感器的开关; 以及切换控制单元，其在切换压电构件的变形方向时连接开关，并且在与谐振电路的共振周期的半周期相对应的时间过去时切断开关。

公开(公告)号：US08836199B2

公开(公告)日：2014-09-16

申请号：US13619796

申请日：2012-09-14

申请人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino

发明人： Noritaka Ide ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino

IPC分类号： H02N2/18 ,  H01L41/113

CPC分类号： H02N2/181 ,  H01L41/1136 ,  H02N2/188

摘要： A power generation unit includes a deforming member adapted to repeatedly deform a piezoelectric element, a pair of electrodes provided to the piezoelectric element, an inductor disposed between the pair of electrodes, and constituting a resonant circuit together with a capacitive component of the piezoelectric element, a first switch connected in series to the inductor, a member adapted to detect a timing at which a deformation direction of the deforming member is switched, a full bridge rectifier adapted to rectify a current output from the pair of electrodes, a capacitor connected to the full bridge rectifier, and adapted to store a current supplied from the full bridge rectifier, a second switch connected between either one of the pair of electrodes and the capacitor, and a control circuit adapted to operate the first switch and the second switch.

摘要翻译： 发电单元包括适于使压电元件反复变形的变形构件，设置在压电元件上的一对电极，设置在该对电极之间的电感器，并与压电元件的电容部件一起构成谐振电路， 与电感器串联连接的第一开关，适于检测变形构件的变形方向切换的定时的构件，适于整流来自该对电极的电流输出的全桥整流器，连接到电感器的电容器 全桥整流器，并且适于存储从全桥整流器提供的电流，连接在该对电极中的任一个与电容器之间的第二开关以及适于操作第一开关和第二开关的控制电路。

公开(公告)号：US08941289B2

公开(公告)日：2015-01-27

申请号：US13619729

申请日：2012-09-14

申请人： Atsuya Hirabayashi ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Yasuhiro Ono

发明人： Atsuya Hirabayashi ,  Kunio Tabata ,  Atsushi Oshima ,  Hiroyuki Yoshino ,  Noritaka Ide ,  Yasuhiro Ono

IPC分类号： H01L41/113 ,  H02N2/18

CPC分类号： H01L41/1136 ,  H02N2/181 ,  H02N2/188

摘要： A power generation unit includes: a deforming member adapted to deform while switching a deformation direction; a piezoelectric device provided to the deforming member, and having a pair of electrodes; a displacement sensor adapted to detect a deformation amount of the deforming member, and then output deformation amount information as information related to the deformation amount; an inductor electrically connected to the piezoelectric device; a switch disposed between the piezoelectric device and the inductor; and a switch control section adapted to control the switch so as to set the pair of electrodes to a shorted state for a predetermined period of time when the deformation amount exceeds a predetermined level.

摘要翻译： 发电单元包括：适于在切换变形方向时变形的变形构件; 设置在变形部件上的压电元件，具有一对电极; 位移传感器，适于检测变形构件的变形量，然后输出变形量信息作为与变形量有关的信息; 电感器，其电连接到所述压电器件; 设置在压电器件和电感器之间的开关; 以及开关控制部，其适于控制所述开关，以便在所述变形量超过预定水平时，将所述一对电极设定为短路状态达预定时间段。