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1. 发明授权

US07675218B2 Drive apparatus of piezoelectric actuator, electronic apparatus, drive method of electronic apparatus, drive control program of electronic apparatus, and medium 有权
标题翻译：压电致动器的驱动装置，电子设备，电子设备的驱动方法，电子设备的驱动控制程序和介质
公开(公告)号：US07675218B2
公开(公告)日：2010-03-09
申请号：US11076065
申请日：2005-03-10
申请人： Takashi Kawaguchi , Akihiro Sawada , Yutaka Yamazaki , Makoto Okeya
发明人： Takashi Kawaguchi , Akihiro Sawada , Yutaka Yamazaki , Makoto Okeya
IPC分类号： H01L41/09
CPC分类号： H02N2/062 , G04C3/12 , G04C17/005 , H01L41/0906
摘要： An electronic device comprising a power source, a piezoelectric actuator A, and a drive control apparatus 100 for controlling the driving of the piezoelectric actuator, wherein the drive control apparatus 100 is provided with a drive circuit 111 for supplying a drive signal SDR to the piezoelectric element of the vibrating body 12, a phase difference detection means 120 for detecting the phase difference indicating the vibration state of the vibrating body 12, a comparison voltage setting circuit 133 for correcting the target phase difference to be the target for the vibration state, and a drive frequency setting means 140 for comparing the phase difference with the target phase difference; and the piezoelectric actuator A can be driven with high efficiency independent of the drive voltage by modifying the drive frequency of the drive signal SDR so that the phase difference approaches the target phase difference based on the results of the above comparison.
摘要翻译：一种电子设备，包括电源，压电致动器A和用于控制压电致动器的驱动的驱动控制装置100，其中驱动控制装置100设置有驱动电路111，用于将驱动信号SDR提供给压电振动体12的元件，用于检测表示振动体12的振动状态的相位差的相位差检测单元120，将目标相位差校正为振动状态的目标的比较电压设定电路133以及用于将相位差与目标相位差进行比较的驱动频率设定装置140; 并且通过修改驱动信号SDR的驱动频率，可以以与驱动电压无关的方式驱动压电致动器A，从而基于上述比较的结果，相位差接近目标相位差。

2. 发明授权

US07298066B2 Drive apparatus for piezoelectric actuator, drive method for piezoelectric actuator, electronic device, control program for drive apparatus for piezoelectric actuator, and recording medium 有权
标题翻译：用于压电致动器的驱动装置，压电致动器的驱动方法，电子装置，用于压电致动器的驱动装置的控制程序和记录介质
公开(公告)号：US07298066B2
公开(公告)日：2007-11-20
申请号：US11269682
申请日：2005-11-09
申请人： Takashi Kawaguchi , Akihiro Sawada , Yutaka Yamazaki , Makoto Okeya
发明人： Takashi Kawaguchi , Akihiro Sawada , Yutaka Yamazaki , Makoto Okeya
IPC分类号： H01L41/08
CPC分类号： H02N2/103 , H01L41/0906 , H02N2/142
摘要： A drive apparatus for a piezoelectric actuator prevents locking drive frequency in a state of resonance due to harmonics. There is no need to provide external components to filter, and circuitry can easily be reduced in size. The drive apparatus has a phase difference-DC conversion circuit to detect vibrating state of the vibrating body, a comparison circuit, a harmonics detection circuit to detect that the vibrating body is resonating due to harmonics and outputting a harmonics detection signal, an integration circuit to control the frequency of the drive signal supplied to the piezoelectric element of the vibrating body, a variable frequency oscillation circuit, and a drive circuit. The integration circuit, the variable frequency oscillation circuit, and the drive circuit control the frequency of the drive signal on the basis of the output of the comparison circuit when a harmonics detection signal is not outputted and continue to vary the frequency of the drive signal without controlling the frequency of the drive signal on the basis of the output of the comparison circuit when a harmonics detection signal is being outputted.
摘要翻译：用于压电致动器的驱动装置防止由于谐波而使驱动频率处于共振状态。不需要提供外部组件进行过滤，电路可以轻松减小尺寸。驱动装置具有检测振动体的振动状态的相位差 - 直流转换电路，比较电路，谐波检测电路，用于检测振动体由于谐波而谐振并输出谐波检测信号，积分电路控制提供给振动体的压电元件的驱动信号的频率，可变频率振荡电路和驱动电路。当不输出谐波检测信号时，积分电路，可变频率振荡电路和驱动电路基于比较电路的输出来控制驱动信号的频率，并且不继续改变驱动信号的频率而没有当输出谐波检测信号时，基于比较电路的输出来控制驱动信号的频率。

3. 发明申请

US20060113863A1 Drive apparatus for piezoelectric actuator, drive method for piezoelectric actuator, electronic device, control program for drive apparatus for piezoelectric actuator, and recording medium 有权
标题翻译：用于压电致动器的驱动装置，压电致动器的驱动方法，电子装置，用于压电致动器的驱动装置的控制程序和记录介质
公开(公告)号：US20060113863A1
公开(公告)日：2006-06-01
申请号：US11269682
申请日：2005-11-09
申请人： Takashi Kawaguchi , Akihiro Sawada , Yutaka Yamazaki , Makoto Okeya
发明人： Takashi Kawaguchi , Akihiro Sawada , Yutaka Yamazaki , Makoto Okeya
IPC分类号： H01L41/08
CPC分类号： H02N2/103 , H01L41/0906 , H02N2/142
摘要： A drive apparatus for a piezoelectric actuator prevents locking drive frequency in a state of resonance due to harmonics. There is no need to provide external components to filter, and circuitry can easily be reduced in size. The drive apparatus has a phase difference-DC conversion circuit to detect vibrating state of the vibrating body, a comparison circuit, a harmonics detection circuit to detect that the vibrating body is resonating due to harmonics and outputting a harmonics detection signal, an integration circuit to control the frequency of the drive signal supplied to the piezoelectric element of the vibrating body, a variable frequency oscillation circuit, and a drive circuit. The integration circuit, the variable frequency oscillation circuit, and the drive circuit control the frequency of the drive signal on the basis of the output of the comparison circuit when a harmonics detection signal is not outputted and continue to vary the frequency of the drive signal without controlling the frequency of the drive signal on the basis of the output of the comparison circuit when a harmonics detection signal is being outputted.
摘要翻译：用于压电致动器的驱动装置防止由于谐波而使驱动频率处于共振状态。不需要提供外部组件进行过滤，电路可以轻松减小尺寸。驱动装置具有检测振动体的振动状态的相位差 - 直流转换电路，比较电路，谐波检测电路，用于检测振动体由于谐波而谐振并输出谐波检测信号，积分电路控制提供给振动体的压电元件的驱动信号的频率，可变频率振荡电路和驱动电路。当不输出谐波检测信号时，积分电路，可变频率振荡电路和驱动电路基于比较电路的输出控制驱动信号的频率，并且继续改变驱动信号的频率而没有当输出谐波检测信号时，基于比较电路的输出来控制驱动信号的频率。

4. 发明申请

US20070278976A1 Drive apparatus of piezoelectric actuator, electronic apparatus, drive method of electronic apparatus, drive control program of electronic apparatus, and medium 有权
标题翻译：压电致动器的驱动装置，电子设备，电子设备的驱动方法，电子设备的驱动控制程序和介质
公开(公告)号：US20070278976A1
公开(公告)日：2007-12-06
申请号：US11076065
申请日：2005-03-10
申请人： Takashi Kawaguchi , Akihiro Sawada , Yutaka Yamazaki , Makoto Okeya
发明人： Takashi Kawaguchi , Akihiro Sawada , Yutaka Yamazaki , Makoto Okeya
IPC分类号： H02N2/00
CPC分类号： H02N2/062 , G04C3/12 , G04C17/005 , H01L41/0906
摘要： An electronic device comprising a power source, a piezoelectric actuator A, and a drive control apparatus 100 for controlling the driving of the piezoelectric actuator, wherein the drive control apparatus 100 is provided with a drive circuit 111 for supplying a drive signal SDR to the piezoelectric element of the vibrating body 12, a phase difference detection means 120 for detecting the phase difference indicating the vibration state of the vibrating body 12, a comparison voltage setting circuit 133 for correcting the target phase difference to be the target for the vibration state, and a drive frequency setting means 140 for comparing the phase difference with the target phase difference; and the piezoelectric actuator A can be driven with high efficiency independent of the drive voltage by modifying the drive frequency of the drive signal SDR so that the phase difference approaches the target phase difference based on the results of the above comparison.
摘要翻译：一种电子设备，包括电源，压电致动器A和用于控制压电致动器的驱动的驱动控制装置100，其中驱动控制装置100设置有驱动电路111，用于将驱动信号SDR提供给压电振动体12的元件，用于检测表示振动体12的振动状态的相位差的相位差检测单元120，将目标相位差校正为振动状态的目标的比较电压设定电路133以及用于将相位差与目标相位差进行比较的驱动频率设定装置140; 并且通过修改驱动信号SDR的驱动频率，可以以与驱动电压无关的方式驱动压电致动器A，从而基于上述比较的结果，相位差接近目标相位差。

5. 发明申请

US20070001547A1 Piezoactuator drive detection device and electronic device 有权
标题翻译：压电驱动器检测装置和电子装置
公开(公告)号：US20070001547A1
公开(公告)日：2007-01-04
申请号：US11476057
申请日：2006-06-28
申请人： Akihiro Sawada
发明人： Akihiro Sawada
IPC分类号： H01L41/09
CPC分类号： G04C3/12 , G04C17/0058 , H02N2/0025 , H02N2/004 , H02N2/026 , H02N2/062 , H02N2/103 , H02N2/142
摘要： To provide a drive detection means for a piezoelectric actuator that can detect an amount driven without requiring adding an encoder or other component while also preventing increasing the load. A rotor is disposed eccentrically to the axis of rotation to change the pressure applied from the rotor to a contact part as the rotor is driven. When the pressure changes, the amplitude of the detection signal output from the detection electrode 18 of the piezoelectric element changes in conjunction with rotor rotation, and how much the rotor has been driven can be detected by detecting the amplitude change. Size and thickness can therefore be reduced because providing an encoder, switch, or other component is unnecessary, and current consumption can also be reduced.
摘要翻译：提供一种用于压电致动器的驱动检测装置，该驱动器检测装置可以在不需要增加编码器或其他部件的同时也可以检测驱动量，同时也防止增加负载。当转子被驱动时，转子偏心地设置在旋转轴上，以将从转子施加的压力改变为接触部分。当压力变化时，从压电元件的检测电极18输出的检测信号的振幅与转子旋转一起变化，并且可以通过检测振幅变化来检测转子多少。因此，由于不需要提供编码器，开关或其他部件，因此可以减小尺寸和厚度，并且还可以减少电流消耗。

6. 发明申请

US20060245304A1 Timepiece driving apparatus and time calculating apparatus 审中-公开
标题翻译：时计驱动装置和时间计算装置
公开(公告)号：US20060245304A1
公开(公告)日：2006-11-02
申请号：US11476060
申请日：2006-06-28
申请人： Akihiko Maruyama , Joji Kitahara , Akihiro Sawada
发明人： Akihiko Maruyama , Joji Kitahara , Akihiro Sawada
IPC分类号： G04B1/00
CPC分类号： G04C3/12 , G04R60/10 , G04R60/14
摘要： A timing device having a generator unit, a storage unit, and a drive unit is provided. The generator unit has a generating coil and converts kinetic energy into electric energy by utilizing electromagnetic induction. The storage unit stores the electric energy. The drive unit has a piezoelectric actuator, a mechanical structure, and a time display unit. The piezoelectric actuator is supplied with the electric energy from the storage unit and is caused to oscillate according to signals from the communication unit. The mechanical structure is provided with a time display unit and is driven by the piezoelectric actuator.
摘要翻译：提供具有发电机单元，存储单元和驱动单元的定时装置。发电机组具有发电线圈，利用电磁感应将动能转换为电能。存储单元存储电能。驱动单元具有压电致动器，机械结构和时间显示单元。压电致动器从存储单元提供电能，并且根据来自通信单元的信号使其振荡。机械结构设有时间显示单元，由压电致动器驱动。

7. 发明申请

US20050158018A1 Information reproduction apparatus 审中-公开
标题翻译：信息再生装置
公开(公告)号：US20050158018A1
公开(公告)日：2005-07-21
申请号：US11036022
申请日：2005-01-18
申请人： Akihiro Sawada
发明人： Akihiro Sawada
IPC分类号： G11B19/02 , G11B19/16 , G11B27/00 , G11B27/10 , G11B27/34 , H04N5/76 , H04N5/781 , H04N5/85 , H04N9/804
CPC分类号： H04N9/8042 , G11B19/025 , G11B19/16 , G11B27/002 , G11B27/105 , G11B27/34 , G11B2220/20 , G11B2220/2529 , G11B2220/2545 , G11B2220/65 , H04N5/781 , H04N5/85
摘要： An information reproduction apparatus includes a button, a memory, a detection section, a storage section that stores information, a reproduction section, and a control section. The memory has a storage region corresponding to the button. The detection section detects which way the button is pressed in, from among predetermined ways including a first way and a second way. The reproduction section reproduces the information stored in the storage section. When the button is pressed while the reproduction section reproduces the information and the detection section detects that the button is pressed in the first way, the control section store subinformation of the information being reproduced in the storage region corresponding to the pressed button. When the button is pressed and the detection section detects that the button is pressed in the second way, the control section reads out subinformation stored in the storage region corresponding to the pressed button.
摘要翻译：信息再现装置包括按钮，存储器，检测部分，存储信息的存储部分，再现部分和控制部分。存储器具有对应于按钮的存储区域。检测部从包括第一路和第二路的预定方式中检测按压按钮的方式。再现部分再现存储在存储部分中的信息。当再现部分再现该信息并且检测部分以第一方式检测到按钮被按下时按下该按钮时，该控制部分存储正在被再现的信息的子信息，该信息在与被按下的按钮对应的存储区域中。当按下按钮并且检测部分以第二方式检测到按钮被按下时，控制部分读出存储在与按下的按钮对应的存储区域中的子信息。

8. 发明授权

US06841919B2 Piezoactuator and drive circuit therefor 有权
标题翻译：压电器及其驱动电路
公开(公告)号：US06841919B2
公开(公告)日：2005-01-11
申请号：US10109356
申请日：2002-03-26
申请人： Hidehiro Akahane , Akihiro Sawada , Makoto Furuhata
发明人： Hidehiro Akahane , Akihiro Sawada , Makoto Furuhata
IPC分类号： H01L41/04 , H01L41/09 , H02N2/00 , H01L41/08
CPC分类号： H02N2/103 , H02N2/004 , H02N2/008
摘要： A piezoactuator has a diaphragm, and the diaphragm has flat piezoelectric elements that oscillate in a longitudinal oscillation mode and a sinusoidal oscillation mode. A first electrode for detecting oscillation in the longitudinal oscillation mode, and a second electrode for detecting the amplitude of oscillation in the sinusoidal oscillation mode, are disposed on the surface of the diaphragm. When the piezoactuator is driven with a drive signal, the phase difference of a first detection signal output from the first electrode and a second detection signal output from the second electrode is detected. The frequency at which the detected phase difference becomes the maximum phase difference is then obtained, and a drive signal of a matching frequency is applied to the piezoelectric elements.
摘要翻译：压电致动器具有隔膜，并且隔膜具有以纵向振荡模式和正弦振荡模式振荡的平坦的压电元件。用于检测纵向振荡模式中的振荡的第一电极和用于检测正弦振荡模式中的振荡幅度的第二电极设置在隔膜的表面上。当用驱动信号驱动压电致动器时，检测从第一电极输出的第一检测信号和从第二电极输出的第二检测信号的相位差。然后获得检测到的相位差成为最大相位差的频率，并且将匹配频率的驱动信号施加到压电元件。

9. 发明授权

US5818782A Data transmission circuit, data line driving circuit, amplifying circuit, semiconductor integrated circuit, and semiconductor memory 失效
公开(公告)号：US5818782A
公开(公告)日：1998-10-06
申请号：US814507
申请日：1997-03-10
申请人： Hisakazu Kotani , Hironori Akamatsu , Ichiro Nakao , Toshio Yamada , Akihiro Sawada , Hirohito Kikukawa , Masashi Agata , Shunichi Iwanari
发明人： Hisakazu Kotani , Hironori Akamatsu , Ichiro Nakao , Toshio Yamada , Akihiro Sawada , Hirohito Kikukawa , Masashi Agata , Shunichi Iwanari
IPC分类号： G11C5/02 , G11C7/10 , G11C11/4096 , G11C13/00
CPC分类号： G11C7/1057 , G11C11/4096 , G11C5/025 , G11C7/1048 , G11C7/1051 , G11C7/106 , G11C7/1069
摘要： In a driver circuit for driving a pair of data lines, the amplitude of a differential input signal is reduced from 2.5 V to 0.6 V, which is smaller than a conventional lower-limit source voltage (approximately 1.5 V). The amplitude of the differential signal transmitted through the pair of data lines is amplified to 2.5 V by an amplifying circuit and the resulting signal is then latched by a latch circuit. After the latching by the latch circuit, the operation of the amplifying circuit is halted. The driver circuit is constituted solely by a plurality of NMOS transistors so as not to increase a leakage current flowing in the off state. Here, the threshold voltage of the NMOS transistor positioned on the ground side is reduced to a conventional lower-limit value (0.3 V to 0.6 V), while the threshold voltage of the NMOS transistor on the power-source side to a value lower than the above lower-limit value (0 V to 0.3 V), thereby enhancing a driving force of the NMOS transistor on the power-source side.

10. 发明授权

US5546346A Semiconductor memory device 失效
标题翻译：半导体存储器件
公开(公告)号：US5546346A
公开(公告)日：1996-08-13
申请号：US354124
申请日：1994-12-06
申请人： Masashi Agata , Kazuhiro Matsuyama , Hironori Akamatsu , Hirohito Kikukawa , Akihiro Sawada , Shunichi Iwanari
发明人： Masashi Agata , Kazuhiro Matsuyama , Hironori Akamatsu , Hirohito Kikukawa , Akihiro Sawada , Shunichi Iwanari
IPC分类号： G11C11/409 , G11C7/10 , G11C11/407 , G11C7/00
CPC分类号： G11C7/1072
摘要： In a synchronous DRAM required to be capable of performing high-speed consecutive operations in synchronism with a clock signal, a DBI-line pair is connected between a DQ-line pair and an RDB-line pair, and pipeline operation whose single cycle time is divided into four periods is employed. This S-DRAM has following: a first precharge circuit for precharging or voltage-equalizing the DQ-line pair to a power supply voltage level in the first and forth periods only; a second precharge circuit for voltage-equalizing the DBI-line pair to a ground voltage level in the first and second periods only; a third precharge circuit for voltage-equalizing the RDB-line pair to the power supply voltage level in the first and second periods only; first and second differential amplifiers for transmitting data on the DQ lines onto the DBI lines in the third period and for holding the data on the DBI lines in the fourth period; and a third differential amplifier which transmits the data on the DBI lines onto the RDB lines in the third period and which holds the data on the RDB lines in the fourth period.
摘要翻译：在需要与时钟信号同步执行高速连续操作的同步DRAM中，DBI线对连接在DQ线对和RDB线对之间，其流水线操作的单周期时间为分为四个阶段。该S-DRAM具有以下：第一预充电电路，用于仅在第一和第四周期中将DQ线对预充电或电压均衡至电源电压电平; 第二预充电电路，用于仅在第一和第二周期中将DBI线对对电压均衡至接地电压电平; 第三预充电电路，用于仅在第一和第二周期中将RDB线对对电压均衡至电源电压电平; 第一和第二差分放大器，用于在第三周期中将DQ线上的数据发送到DBI线上，并且用于在第四周期中将数据保存在DBI线上; 以及第三差分放大器，其在第三周期中将DBI线上的数据发送到RDB线上，并且在第四周期中将数据保存在RDB线上。

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