公开(公告)号：US06731764B2

公开(公告)日：2004-05-04

申请号：US09884417

申请日：2001-06-19

申请人： Kohei Asada ,  Tooru Sasaki ,  Akira Kimura ,  Takayuki Mizuuchi

发明人： Kohei Asada ,  Tooru Sasaki ,  Akira Kimura ,  Takayuki Mizuuchi

IPC分类号： H04R2500

CPC分类号： H04R7/08 ,  H04R5/02 ,  H04R7/045 ,  H04R2205/022

摘要： A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillated substantially freely at least in the direction along the diaphragm thickness and at least one driver unit constituting an oscillation source secured to the diaphragm surface for imparting oscillations to the diaphragm. The diaphragm is set into flexural oscillations by oscillations applied from the driver unit driven on the basis of the playback input signal. By flexurally oscillating the diaphragm to radiate the acoustic sound, optimum frequency response characteristics can be obtained over a wide frequency range from the low to high frequency range. Moreover, the acoustic sound of optimum sound quality may be radiated in a state of minimum sound pressure level fluctuations over a frequency range from the low to high frequency range.

摘要翻译： 一种扬声器装置，其中通过具有基本平坦表面的面板形式的隔膜的弯曲振荡辐射声音。 扬声器装置包括一个板状隔膜，其外边缘至少沿隔膜厚度的方向可以基本上自由地摆动，以及构成振动源的至少一个驱动单元，该驱动单元固定在隔膜表面上，用于向隔膜施加振动。 通过从基于播放输入信号驱动的驱动单元施加的振荡将隔膜设置为弯曲振荡。 通过弯曲地振动隔膜以辐射声音，可以在从低频到高频范围的宽频率范围内获得最佳的频率响应特性。 此外，可以在从低频到高频范围的频率范围内以最小声压级波动的状态辐射最佳声音质量的声音。

公开(公告)号：US06621908B2

公开(公告)日：2003-09-16

申请号：US09884588

申请日：2001-06-19

申请人： Kohei Asada ,  Tooru Sasaki ,  Akira Kimura ,  Takayuki Mizuuchi

发明人： Kohei Asada ,  Tooru Sasaki ,  Akira Kimura ,  Takayuki Mizuuchi

IPC分类号： H04R2500

CPC分类号： H04R7/08 ,  H04R5/02 ,  H04R7/045 ,  H04R2205/022

摘要： A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillated substantially freely at least in the direction along the diaphragm thickness and at least one driver unit constituting an oscillation source secured to the diaphragm surface for imparting oscillations to the diaphragm. The diaphragm is set into flexural oscillations by oscillations applied from the driver unit driven on the basis of the playback input signal. By flexurally oscillating the diaphragm to radiate the acoustic sound, optimum frequency response characteristics can be obtained over a wide frequency range from the low to high frequency range. Moreover, the acoustic sound of optimum sound quality may be radiated in a state of minimum sound pressure level fluctuations over a frequency range from the low to high frequency range.

公开(公告)号：US06519346B1

公开(公告)日：2003-02-11

申请号：US09381478

申请日：1999-09-16

申请人： Kohei Asada ,  Tooru Sasaki ,  Akira Kimura ,  Takayuki Mizuuchi

发明人： Kohei Asada ,  Tooru Sasaki ,  Akira Kimura ,  Takayuki Mizuuchi

IPC分类号： H04R2500

CPC分类号： H04R7/08 ,  H04R5/02 ,  H04R7/045 ,  H04R2205/022

摘要： A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillated substantially freely at least in the direction along the diaphragm thickness and at least one driver unit constituting an oscillation source secured to the diaphragm surface for imparting oscillations to the diaphragm. The diaphragm is set into flexural oscillations by oscillations applied from the driver unit driven on the basis of the playback input signal. By flexurally oscillating the diaphragm to radiate the acoustic sound, optimum frequency response characteristics can be obtained over a wide frequency range from the low to high frequency range. Moreover, the acoustic sound of optimum sound quality may be radiated in a state of minimum sound pressure level fluctuations over a frequency range from the low to high frequency range.

摘要翻译： 一种扬声器装置，其中通过具有基本平坦表面的面板形式的隔膜的弯曲振荡辐射声音。 扬声器装置包括一个板状隔膜，其外边缘至少沿隔膜厚度的方向可以基本上自由地摆动，以及构成振动源的至少一个驱动单元，该驱动单元固定在隔膜表面上，用于向隔膜施加振动。 通过从基于播放输入信号驱动的驱动单元施加的振荡将隔膜设置为弯曲振荡。 通过弯曲地振动隔膜以辐射声音，可以在从低频到高频范围的宽频率范围内获得最佳的频率响应特性。 此外，可以在从低频到高频范围的频率范围内以最小声压级波动的状态辐射最佳声音质量的声音。

公开(公告)号：US06804367B2

公开(公告)日：2004-10-12

申请号：US09884836

申请日：2001-06-19

申请人： Kohei Asada ,  Tooru Sasaki ,  Akira Kimura ,  Takayuki Mizuuchi

发明人： Kohei Asada ,  Tooru Sasaki ,  Akira Kimura ,  Takayuki Mizuuchi

IPC分类号： H04R2500

CPC分类号： H04R7/08 ,  H04R5/02 ,  H04R7/045 ,  H04R2205/022

摘要： A speaker apparatus in which the acoustic sound is radiated by flexural oscillations of a diaphragm in the form of a panel having a substantially flat surface. The speaker apparatus includes a panel-shaped diaphragm the outer rim of which can be oscillated substantially freely at least in the direction along the diaphragm thickness and at least one driver unit constituting an oscillation source secured to the diaphragm surface for imparting oscillations to the diaphragm. The diaphragm is set into flexural oscillations by oscillations applied from the driver unit driven on the basis of the playback input signal. By flexurally oscillating the diaphragm to radiate the acoustic sound, optimum frequency response characteristics can be obtained over a wide frequency range from the low to high frequency range. Moreover, the acoustic sound of optimum sound quality may be radiated in a state of minimum sound pressure level fluctuations over a frequency range from the low to high frequency range.

公开(公告)号：US5243661A

公开(公告)日：1993-09-07

申请号：US680408

申请日：1991-04-04

申请人： Masashi Ohkubo ,  Tooru Sasaki ,  Yasushi Katsumata ,  Akira Kimura

发明人： Masashi Ohkubo ,  Tooru Sasaki ,  Yasushi Katsumata ,  Akira Kimura

IPC分类号： G10K11/178 ,  H04R3/00

CPC分类号： H04R3/005 ,  G10K11/1784 ,  G10K11/1788 ,  G10K2210/1051 ,  G10K2210/108 ,  G10K2210/129 ,  G10K2210/3033 ,  G10K2210/3045

摘要： A microphone apparatus having a microphone for producing a desired audio signal, includes an adaptive signal processing section which is supplied with a reference signal based on a vibration detected signal from a vibration detecting circuit in response to a vibration of a vibration generating source whose vibration is picked up by the microphone and becomes an unnecessary noise signal, or in response to a control signal for controlling a drive source of a driving unit of a recording apparatus for recording an output signal from the microphone and which reduces a noise signal contained in the audio signal.

公开(公告)号：US5138664A

公开(公告)日：1992-08-11

申请号：US493432

申请日：1990-03-14

申请人： Akira Kimura ,  Tooru Sasaki ,  Nobuo Kobayashi

发明人： Akira Kimura ,  Tooru Sasaki ,  Nobuo Kobayashi

IPC分类号： G10K11/178

CPC分类号： G10K11/1788 ,  G10K11/1782 ,  G10K2210/1053 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3011 ,  G10K2210/3056

摘要： This invention is concerned with a device for reducing the external noise reaching the ear in extremely noisy places such as in the vehicle or construction sites. According to the present invention, the external noise in picked up by a microphone provided in the vicinity of an electro-acoustic transducer element, such as a headphone unit, provided in the vicinity of the wearer's ear, and the noise signal converted in this manner into electrical signals is produced as the acoustic signal by the electro-acoustic transducer element. The transfer characteristics and controlled in such a manner that the produced noise signal prove to be an acoustic signal which is of the same frequency spectrum and opposite in phase with respect to the external noise reaching the wearer's acoustic meatus from outside to reduce the external noise reaching the acoustic meatus.

公开(公告)号：US5091954A

公开(公告)日：1992-02-25

申请号：US482250

申请日：1990-02-20

申请人： Tooru Sasaki ,  Masashi Ohkubo ,  Akira Kimura

发明人： Tooru Sasaki ,  Masashi Ohkubo ,  Akira Kimura

IPC分类号： G10K11/178

CPC分类号： G10K11/1782 ,  G10K11/1788 ,  G10K2210/108 ,  G10K2210/1081 ,  G10K2210/3011 ,  G10K2210/30232 ,  G10K2210/3217

摘要： The present invention is concerned with a receiver device for converting electrical signal from a headphone, a telephone receiver or the like into acoustic signals. More particularly, it relates to a noise reducing receiver device in which acoustic signals in the vicinity of an electro-acoustic transducer element are converted by a microphone into electrical signals and negatively fed back to an amplifier circuit which is adapted for amplifying input electrical signals and supplying the amplified signals to the electro-acoustic transducer element. In the noise reducing receiver device, the input electrical signals are amplified by the amplifier circuit and converted by the electro-acoustic transducer element into output acoustic signals. A microphone is arranged in the vicinity of the electro-acoustic transducer element and adapted for converting the output acoustic signals and external noise into electrical signals, which are negatively fed back to the amplifier circuit via a feedback circuit. The output acoustic signals may be heard at a desired noise reduction level by adjusting the transfer function H of the electro-acoustic transducer element, the transfer function A of the amplifier circuit, the transfer function M of the microphone and the transfer function .beta. of the feedback circuit within a range determined by .vertline.AHM.beta..vertline.>>1.

公开(公告)号：US5493554A

公开(公告)日：1996-02-20

申请号：US138681

申请日：1993-10-18

申请人： Tooru Sasaki ,  Kunikazu Ohnishi ,  Yasuo Kitada ,  Masayuki Inoue

发明人： Tooru Sasaki ,  Kunikazu Ohnishi ,  Yasuo Kitada ,  Masayuki Inoue

IPC分类号： G11B7/135 ,  G11B11/10 ,  G11B11/105 ,  G11B7/12

CPC分类号： G11B7/1356 ,  G11B11/10543 ,  G11B7/1362 ,  G11B7/1365

摘要： A 2-laser optical head in which the number of optical parts is small and an arrangement is also simple and a whole optical system can be miniaturized. As a construction to realize the 2-laser optical head, there is a construction in a 2-laser optical head comprising at least: semiconductor laser devices for rewriting and reproducing; a beam splitter for transmitting a laser beam emitted from the reproducing semiconductor laser device and for reflecting a laser beam emitted from the rewriting semiconductor laser device; an objective lens for converging the laser beams and irradiating onto a recording surface of a magneto-optic disk, thereby forming a spot for reproduction and a spot for rewriting; a detection optical system for detecting a reflected light from the recording surface of the spot; and a detection optical system for detecting a reflected light from the recording surface of the spot, wherein a dichroism beam splitter is arranged in a manner such that the angles between normal vectors of incident surfaces and incident optical axes and are equal to 45.degree., and the occurrence of a phase difference which causes a deterioration of a deflecting state is corrected by a beam splitter.

摘要翻译： 光学部件数量少，配置也简单的2激光光头，整个光学系统可以小型化。 作为实现2激光光学头的结构，至少包括：用于重写和再现的半导体激光器件的2激光光学头的结构; 用于传输从再现半导体激光器件发射的激光束并用于反射从重写半导体激光器件发射的激光束的分束器; 用于会聚激光束并照射在磁光盘的记录表面上的物镜，从而形成用于再现的点和重写点; 用于检测来自该点的记录表面的反射光的检测光学系统; 以及用于检测来自该点的记录表面的反射光的检测光学系统，其中以使得入射表面的法向矢量和入射光轴之间的角度等于45°的方式布置二色性分束器，并且 通过分束器校正导致偏转状态恶化的相位差的发生。

公开(公告)号：US5051964A

公开(公告)日：1991-09-24

申请号：US570602

申请日：1990-08-21

申请人： Tooru Sasaki

发明人： Tooru Sasaki

IPC分类号： H04R1/40 ,  H04R3/00

CPC分类号： H04R1/406 ,  H04R3/005

摘要： An apparatus and method for producing an output signal representing a sound pressure at a predetermined position wherein a first microphone is provided for producing a first output signal representing a sound pressure P.sub.0 at a first position; a second microphone is provided for producing a second output signal representing a sound pressure P.sub.1 at a second position; and a signal processing circuit is provided for producing the output signal based upon the first output signal and the second output signal; wherein the signal processing circuit is operative to produce the output signal proportional to: (i) a power function of the second output signal based on an exponent m corresponding to a distance between the first microphone and the predetermined position, multiplied by (ii) a power function of the first output signal based on an exponent representing a value obtained by subtracting at least the exponent m of the power function of the second output signal from 1.

公开(公告)号：US4768172A

公开(公告)日：1988-08-30

申请号：US945568

申请日：1986-12-23

申请人： Tooru Sasaki

发明人： Tooru Sasaki

IPC分类号： G11C11/41 ,  G11C8/16 ,  G11C13/00

CPC分类号： G11C8/16

摘要： A memory cell comprises a memory which memorizes binary information in a static manner, a first delivery device which gives the binary information to a first bit line based on the potential of a first word line, and a second delivery device which gives the binary information memorized in the memory to a second word line different from the first word line, without forming a current path between the memory and a second bit line different from the first bit line.

摘要翻译： 存储器单元包括以静态方式存储二进制信息的存储器，基于第一字线的电位将二进制信息提供给第一位线的第一传送设备，以及存储二进制信息的第二传送设备 在与第一字线不同的第二字线的存储器中，不在存储器和不同于第一位线的第二位线之间形成电流路径。