公开(公告)号：US20130182883A1

公开(公告)日：2013-07-18

申请号：US13825246

申请日：2011-08-23

申请人： Katsu Takeda ,  Fumiyasu Konno ,  Rihito Shoji ,  Susumu Fukushima

发明人： Katsu Takeda ,  Fumiyasu Konno ,  Rihito Shoji ,  Susumu Fukushima

IPC分类号： H04R1/34

CPC分类号： H04R1/345 ,  H04R1/026 ,  H04R1/06 ,  H04R1/323 ,  H04R5/02 ,  H04R2201/025 ,  H04R2217/03 ,  H04R2499/13

摘要： A sound reproduction device includes a superdirective speaker having a first surface, and an attachment part having a second surface opposed to the first surface. The first surface has a convex face, and the second surface has a concave face which can come into contact with the convex face. A curvature of the convex face is set larger than that of the concave face. A direction of emitting a sound wave of the superdirective speaker can be adjusted by making the convex face move along the concave face.

摘要翻译： 声音再现装置包括具有第一表面的超直向扬声器和具有与第一表面相对的第二表面的附接部分。 第一表面具有凸面，第二面具有与凸面接触的凹面。 凸面的曲率设定为大于凹面的曲率。 可以通过使凸面沿着凹面移动来调节发出超声扬声器的声波的方向。

公开(公告)号：US07012578B2

公开(公告)日：2006-03-14

申请号：US10454975

申请日：2003-06-05

申请人： Hiroshi Nakatsuka ,  Katsu Takeda

发明人： Hiroshi Nakatsuka ,  Katsu Takeda

IPC分类号： G09G3/18

CPC分类号： H05B41/3927 ,  H05B41/2827 ,  H05B41/2828

摘要： The present invention provides a light emission control device that can drive a plurality of cold cathode fluorescent tubes independently only by connecting a plurality of piezoelectric transformers to only one piezoelectric inverter circuit. A first phase control portion that outputs a signal for changing a phase of the third and the fourth driving control signals with respect to a phase of the first and the second driving control signals to the second driving portion, and a second phase control portion that outputs a signal for changing a phase of the fifth and the sixth driving control signals with respect to a phase of the first and the second driving control signals to the third driving portion are provided in the piezoelectric inverter circuit. Thus, the phase difference of the driving control signals is controlled, so that the output powers to the plurality of cold cathode fluorescent tubes are controlled.

公开(公告)号：US20060038466A1

公开(公告)日：2006-02-23

申请号：US11249640

申请日：2005-10-13

申请人： Hiroshi Nakatsuka ,  Katsu Takeda ,  Katsunori Moritoki ,  Hiroshi Fukushima ,  Yusuke Adachi

发明人： Hiroshi Nakatsuka ,  Katsu Takeda ,  Katsunori Moritoki ,  Hiroshi Fukushima ,  Yusuke Adachi

IPC分类号： H01L41/107

CPC分类号： H05B41/2822 ,  H01L41/107

摘要： A low loss, small scale piezoelectric transformer, suited for a cold cathode tube load, and having a high effective coupling factor, is provided using a piezoelectric plate having a single polarization direction. Controlling the dimensions of the third electrode portion 15a constituting the high impedance portion makes it possible easily to adjust the capacitance of the electrostatic capacitor formed between the first electrode portion 12 and the third electrode portion in accordance with the load. Also, the second electrode portion 13 and the fourth electrode portion 15b constituting the low impedance portion are substantially equal in area and the third electrode portion and the fourth electrode portion are formed in one piece, so that energy propagation efficiency can be increased. Consequently, the effective coupling factor resulting from the electrode structure and the vibration mode can be kept high even if the capacitance is changed freely, and thus high element efficiency and a small amount of generated heat can be maintained and stress can be decreased.

公开(公告)号：US20050285478A1

公开(公告)日：2005-12-29

申请号：US11217004

申请日：2005-08-31

申请人： Katsu Takeda ,  Hiroshi Nakatsuka ,  Katsunori Moritoki

发明人： Katsu Takeda ,  Hiroshi Nakatsuka ,  Katsunori Moritoki

IPC分类号： H01L41/04 ,  H05B41/282 ,  H05B41/285 ,  H05B41/392 ,  H01L41/107

CPC分类号： H05B41/2822 ,  H01L41/044 ,  H05B41/2855 ,  H05B41/392

摘要： A driving circuit for a piezoelectric transformer is provided, which ensures lighting of all the cold-cathode tubes connected to the piezoelectric transformer, and reduces the difference in brightness between the cathode tubes during steady lighting, thereby enhancing reliability and performance. A plurality of cold-cathode tubes connected to a secondary side of the piezoelectric transformer, and a cold-cathode tube output detector circuit connected in series to a plurality of cold-cathode tubes, for detecting an output state of the respective cold-cathode tubes are provided, and the driving of the piezoelectric transformer is controlled based on a detection signal from the cold-cathode tube output detector circuit. Because of this, the piezoelectric transformer performs the same operation as that with respect to one cold-cathode tube.

摘要翻译： 提供一种用于压电变压器的驱动电路，其确保连接到压电变压器的所有冷阴极管的照明，并且在稳定点亮期间减少阴极管之间的亮度差异，从而增强可靠性和性能。 连接到压电变压器的次级侧的多个冷阴极管和与多个冷阴极管串联连接的冷阴极管输出检测器电路，用于检测各个冷阴极管的输出状态 并且基于来自冷阴极管输出检测器电路的检测信号来控制压电变压器的驱动。 因此，压电变压器与一个冷阴极管执行相同的操作。

公开(公告)号：US06720705B2

公开(公告)日：2004-04-13

申请号：US09930184

申请日：2001-08-16

申请人： Hiroshi Nakatsuka ,  Takeshi Yamaguchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Kojiro Okuyama

发明人： Hiroshi Nakatsuka ,  Takeshi Yamaguchi ,  Katsu Takeda ,  Katsunori Moritoki ,  Kojiro Okuyama

IPC分类号： H01L4106

CPC分类号： H01L41/044 ,  H01L41/107 ,  H05B41/2822

摘要： The invention provides a method of driving a piezoelectric transformer and a power source apparatus using the same. For a circuit for driving a piezoelectric transformer which steps up a voltage input from a primary electrode by a piezoelectric effect to output the stepped up voltage from a secondary electrode, the gradient (linear differential value) of a step-up ratio at the piezoelectric transformer is detected, and the detected gradient is used to control the driving frequency for the piezoelectric transformer so that the driving frequency approaches to the resonant frequency of the piezoelectric transformer.

摘要翻译： 本发明提供驱动压电变压器的方法和使用其的电源装置。 对于用于驱动压电变压器的电路，其通过压电效应升高从初级电极输入的电压，以从次级电​​极输出升压电压，压电变压器的升压比的梯度（线性微分值） 并且使用检测到的梯度来控制压电变压器的驱动频率，使得驱动频率接近压电变压器的谐振频率。

公开(公告)号：US06509671B2

公开(公告)日：2003-01-21

申请号：US09870979

申请日：2001-05-31

申请人： Katsu Takeda ,  Hiroshi Nakatsuka ,  Katsunori Moritoki ,  Takeshi Yamaguchi

发明人： Katsu Takeda ,  Hiroshi Nakatsuka ,  Katsunori Moritoki ,  Takeshi Yamaguchi

IPC分类号： H01L4108

CPC分类号： H05B41/2822 ,  H01L41/044

摘要： A driving method and a driving circuit for a piezoelectric transformer are capable of driving the piezoelectric transformer with high driving efficiency independently of an impedance change of a load such as a cold cathode tube by corresponding to the characteristic variance of the piezoelectric transformer, thereby also suppressing mechanical damage to be imposed on the piezoelectric transformer itself even if the load changes abruptly. The piezoelectric transformer is driven with a predetermined first frequency, and a power supply for a load connected to the secondary side of the piezoelectric transformer is started, and when an impedance of a load changes and reaches a predetermined impedance during the power supply, the driving frequency of the piezoelectric transformer is changed without a sweep from the first frequency to a predetermined second frequency. Furthermore, the second frequency is determined by detecting characteristics of the piezoelectric transformer before supplying the load steadily with electric power.

摘要翻译： 用于压电变压器的驱动方法和驱动电路能够独立于诸如冷阴极管的负载的阻抗变化而驱动具有高驱动效率的压电变压器，与压电变压器的特性变化相对应，从而也抑制 即使负载突然变化，也会对压电变压器本身施加机械损伤。 压电变压器以预定的第一频率驱动，并且开始连接到压电变压器的次级侧的负载的电源，并且当负载的阻抗在电源期间变化并达到预定的阻抗时，驱动 压电变压器的频率在没有从第一频率到预定的第二频率的扫描的情况下改变。 此外，通过在稳定地供给电力之前检测压电变压器的特性来确定第二频率。

公开(公告)号：US08861774B2

公开(公告)日：2014-10-14

申请号：US13825246

申请日：2011-08-23

申请人： Katsu Takeda ,  Fumiyasu Konno ,  Rihito Shoji ,  Susumu Fukushima

发明人： Katsu Takeda ,  Fumiyasu Konno ,  Rihito Shoji ,  Susumu Fukushima

IPC分类号： H04R25/00 ,  H04R5/02 ,  H04R1/32 ,  H04R1/34 ,  H04R1/02 ,  H04R1/06

CPC分类号： H04R1/345 ,  H04R1/026 ,  H04R1/06 ,  H04R1/323 ,  H04R5/02 ,  H04R2201/025 ,  H04R2217/03 ,  H04R2499/13

摘要： A sound reproduction device includes a superdirective speaker having a first surface, and an attachment part having a second surface opposed to the first surface. The first surface has a convex face, and the second surface has a concave face which can come into contact with the convex face. A curvature of the convex face is set larger than that of the concave face. A direction of emitting a sound wave of the superdirective speaker can be adjusted by making the convex face move along the concave face.

摘要翻译： 声音再现装置包括具有第一表面的超直向扬声器和具有与第一表面相对的第二表面的附接部分。 第一表面具有凸面，第二面具有与凸面接触的凹面。 凸面的曲率设定为大于凹面的曲率。 可以通过使凸面沿着凹面移动来调节发出超声扬声器的声波的方向。

公开(公告)号：US08666106B2

公开(公告)日：2014-03-04

申请号：US13616224

申请日：2012-09-14

申请人： Fumiyasu Konno ,  Katsu Takeda

发明人： Fumiyasu Konno ,  Katsu Takeda

IPC分类号： H04R1/02

CPC分类号： H04R1/323 ,  H04R5/02 ,  H04R27/00 ,  H04R2201/025 ,  H04R2217/03 ,  H04R2499/15 ,  H04S7/303

摘要： A sound reproducing device includes parametric speakers disposed to a display, a loudspeaker, drivers, a human-body sensor, and a controller. The loudspeaker has a wider directivity than the parametric speakers. The drivers change directions of the parametric speakers, respectively. The parametric speakers and the drivers constitute at least two parametric speaker units each composed of respective one of the parametric speakers and respective one of the drivers. The controller reproduces sound information based the number of persons in front of the display detected from an output from the human-body senor. The sound reproducing device reduces the possibility for a number of persons to hear the sound noisily, and allows drawing more attention to the content, e.g. an advertisement.

摘要翻译： 声音再现装置包括设置在显示器上的参数扬声器，扬声器，驱动器，人体传感器和控制器。 扬声器具有比参数扬声器更宽的方向性。 驱动程序分别改变了参数扬声器的方向。 参数扬声器和驱动器构成至少两个参数扬声器单元，每个扬声器单元由相应的一个参数扬声器和相应的驱动器组成。 控制器根据来自人体传感器的输出检测到的显示器的人数再现声音信息。 声音再现装置降低了许多人听到声音的可能性，并且允许更多地关注内容，例如， 一个广告。

公开(公告)号：US20130077803A1

公开(公告)日：2013-03-28

申请号：US13616224

申请日：2012-09-14

申请人： Fumiyasu KONNO ,  Katsu Takeda

发明人： Fumiyasu KONNO ,  Katsu Takeda

IPC分类号： H04R1/02 ,  H03G3/00

CPC分类号： H04R1/323 ,  H04R5/02 ,  H04R27/00 ,  H04R2201/025 ,  H04R2217/03 ,  H04R2499/15 ,  H04S7/303

摘要： A sound reproducing device includes parametric speakers disposed to a display, a loudspeaker, drivers, a human-body sensor, and a controller. The loudspeaker has a wider directivity than the parametric speakers. The drivers change directions of the parametric speakers, respectively. The parametric speakers and the drivers constitute at least two parametric speaker units each composed of respective one of the parametric speakers and respective one of the drivers. The controller reproduces sound information based the number of persons in front of the display detected from an output from the human-body senor. The sound reproducing device reduces the possibility for a number of persons to hear the sound noisily, and allows drawing more attention to the content, e.g. an advertisement.

摘要翻译： 声音再现装置包括设置在显示器上的参数扬声器，扬声器，驱动器，人体传感器和控制器。 扬声器具有比参数扬声器更宽的方向性。 驱动程序分别改变了参数扬声器的方向。 参数扬声器和驱动器构成至少两个参数扬声器单元，每个扬声器单元由相应的参数扬声器和相应的一个驱动器组成。 控制器根据来自人体传感器的输出检测到的显示器的人数再现声音信息。 声音再现装置降低了许多人听到声音的可能性，并且允许更多地关注内容，例如， 一个广告。

公开(公告)号：US20110170712A1

公开(公告)日：2011-07-14

申请号：US13061762

申请日：2009-09-17

申请人： Katsu Takeda ,  Masaki Tada ,  Masashi Minakuchi ,  Fumiyasu Konno

发明人： Katsu Takeda ,  Masaki Tada ,  Masashi Minakuchi ,  Fumiyasu Konno

IPC分类号： H03G5/00

CPC分类号： H04R17/10 ,  H04R2217/03

摘要： In a sound reproducing apparatus, part of a frequency band where mode-coupled vibration can be excited is regarded as a carrier frequency. A frequency of mode coupling, with a low rate of change in vibration displacement with respect to the frequency, is regarded as a carrier signal so that a signal in an audible band which is outputted from an audible band signal source can be demodulated and reproduced with stable sound pressure in a broad frequency band.

摘要翻译： 在声音再现装置中，可以激励模式耦合振动的频带的一部分被认为是载波频率。 将振动位移相对于频率的低变化率的模式耦合的频率视为载波信号，使得从可听频带信号源输出的可听频带中的信号可以被解调和再现， 在宽频带内稳定的声压。