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1. 发明授权

US6035052A Acoustic transducer 失效
标题翻译：声换能器
公开(公告)号：US6035052A
公开(公告)日：2000-03-07
申请号：US48078
申请日：1998-03-26
申请人： Masao Fujihira , Makoto Yamagishi , Jun Kishigami , Takahiro Muraguchi , Ikuo Shinohara
发明人： Masao Fujihira , Makoto Yamagishi , Jun Kishigami , Takahiro Muraguchi , Ikuo Shinohara
IPC分类号： H04R11/00 , H04R25/00
CPC分类号： H04R11/00
摘要： An electromagnetic induction type acoustic transducer including a plate as an assembly of a magnetic circuit and having an opening of a predetermined diameter about a central axis, a pole piece as an assembly of the magnetic circuit and protruded on the central axis, having an outer peripheral diameter smaller than the opening of the plate and having an upper surface located lower than a lower surface of an opening peripheral portion of the plate by a predetermined distance, a lower surface portion of the opening peripheral portion of the plate and an upper surface portion of the pole piece constitute a magnetic gap of the magnetic circuit,a diaphragm vibrated in the upper and lower direction on the central axis at the position perpendicular to the central axis in the predetermined distance, an annular ring attached to the diaphragm at the position of the magnetic gap, and a coil attached to the plate and/or pole piece.
摘要翻译：一种电磁感应式声学换能器，包括作为磁路组合的板，并且具有围绕中心轴线的预定直径的开口，作为磁路的组件的极片，并且在中心轴线上突出，具有外周直径小于所述板的开口，并且具有位于所述板的开口周边部分的下表面以下的上表面预定距离，所述板的所述开口周边部分的下表面部分和所述板的上表面部分极片构成磁路的磁隙，隔膜在垂直于中心轴线的位置处以预定距离在中心轴线的上下方向上振动，环形环安装在隔膜的位置上磁隙和连接到板和/或极片的线圈。

2. 发明授权

US06356643B2 Electro-acoustic transducer 失效
标题翻译：电声换能器
公开(公告)号：US06356643B2
公开(公告)日：2002-03-12
申请号：US09236867
申请日：1999-01-26
申请人： Makoto Yamagishi , Masao Fujihira
发明人： Makoto Yamagishi , Masao Fujihira
IPC分类号： H04R2500
CPC分类号： H04R1/2857 , H04R1/2819 , H04R1/2853
摘要： An electro-acoustic transducer, such as a speaker device or an earphone device. Includes an electro-acoustic transducing unit, such as a speaker unit, for converting input electrical signals into sound, a casing in which the electro-acoustic transducing unit is arranged and which delimits a back cavity towards the rear side of the electro-acoustic transducing unit, and at least two openings having a sound duct communicating with the back cavity. The sound radiated from the back surface of the electro-acoustic transducing unit is attenuated by being transmitted into the inside of the sound duct to prevent the radiated sound from being re-admitted into the electro-acoustic transducer.
摘要翻译：一种电声换能器，例如扬声器装置或耳机装置。包括用于将输入电信号转换为声音的电声换能单元，例如扬声器单元，其中布置电声换能单元的壳体，并且朝向电声换能的后侧限定后腔以及具有与后腔连通的声道的至少两个开口。从电声转换单元的后表面辐射的声音通过传输到声管的内部而被衰减，以防止辐射声再次进入电声换能器。

3. 发明授权

US5835612A Speaker apparatus 失效
标题翻译：扬声器装置
公开(公告)号：US5835612A
公开(公告)日：1998-11-10
申请号：US800631
申请日：1997-02-14
申请人： Masao Fujihira , Makoto Yamagishi , Kazuo Azami
发明人： Masao Fujihira , Makoto Yamagishi , Kazuo Azami
IPC分类号： H04R9/00 , H01F7/02 , H04R1/00 , H04R9/02 , H04R9/06 , H04R25/00
CPC分类号： H04R9/025 , H04R9/06 , H04R2209/022
摘要： A speaker apparatus includes a yoke formed of a magnetic material and having a flange portion and a center pole protruded integrally forwards from a mid portion of the flange portion, and a ring-shaped driving magnet into which the center pole is inserted. The speaker apparatus also includes a top plate mounted on the driving magnet. The top plate is formed of a magnetic material and the center pole is inserted through the top plate. The top plate defines a magnetic gap together with the center pole. The speaker apparatus further includes a voice coil mounted on a bobbin secured to a diaphragm in the magnetic gap, and a canceling magnet arranged on the outer periphery of and spaced from the driving magnet at a pre-set spacing for covering the driving magnet. The canceling magnet cancels the magnetic flux leaking to outside a magnetic circuit including the driving magnet.
摘要翻译：扬声器装置包括由磁性材料形成的磁轭，其具有凸缘部分和从凸缘部分的中间部分一体地突出的中心磁极，以及环形驱动磁体，中心极插入该磁体中。扬声器装置还包括安装在驱动磁体上的顶板。顶板由磁性材料形成，中心柱通过顶板插入。顶板与中心极一起限定磁隙。扬声器装置还包括安装在固定到磁隙中的隔膜的线轴上的音圈，以及以预定间隔布置在驱动磁体的外周并与驱动磁体隔开的取消磁体，用于覆盖驱动磁体。取消磁体抵消泄漏到包括驱动磁体的磁路外部的磁通量。

4. 发明授权

US06175637B1 Acoustic transducer 失效
标题翻译：声换能器
公开(公告)号：US06175637B1
公开(公告)日：2001-01-16
申请号：US09049067
申请日：1998-03-27
申请人： Masao Fujihira , Makoto Yamagishi , Jun Kishigami , Takahiro Muraguchi , Kenji Tokushige , Ikuo Shinohara
发明人： Masao Fujihira , Makoto Yamagishi , Jun Kishigami , Takahiro Muraguchi , Kenji Tokushige , Ikuo Shinohara
IPC分类号： H04R2500
CPC分类号： H04R9/025 , H04R9/06 , H04R2209/043
摘要： An electromagnetic induction type acoustic transducer apparatus including a magnetic gap formed between a plate and a pole piece serving as assemblies of a magnetic circuit, a conductive ring attached to a diaphragm, the diaphragm interposed within the magnetic gap for generating sounds when it is vibrated, and a flat coil disposed in the plate or the pole piece at the position opposing the magnetic gap and of which winding is increased from the vibration direction of the diaphragm to the direction perpendicular to the vibration direction of the diaphragm, wherein a width of the magnetic gap can be reduced.
摘要翻译：一种电磁感应式声学传感器装置，包括形成在板和作为磁路组件的极片之间的磁隙，安装在隔膜上的导电环，插入磁隙内的隔膜，用于当振动时产生声音，以及在与磁隙相对的位置处设置在板或极片中的扁平线圈，并且其中线圈从振膜的振动方向增加到垂直于振动膜的振动方向的方向，其中磁体的宽度间隙可以减少。

5. 发明授权

US5115473A Transducer having two ducts 失效
标题翻译：具有两个导管的传感器
公开(公告)号：US5115473A
公开(公告)日：1992-05-19
申请号：US561864
申请日：1990-08-02
申请人： Makoto Yamagishi , Masao Fujihira , Kazuo Azami , Ikuo Shinohara
发明人： Makoto Yamagishi , Masao Fujihira , Kazuo Azami , Ikuo Shinohara
IPC分类号： H04R1/02 , H04R1/10 , H04R1/28
CPC分类号： H04R1/2819 , H04R1/1008 , H04R1/1016
摘要： The present invention relates to a so-called bass-reflex electroacoustic transducing apparatus, wherein a plurality of sound ducts (ports) having the same equivalent mass and different lengths are provided in communication with a housing which incorporates therein an electroacoustic transducing element. Thus, resonance and antiresonance generated in respective sound ducts cancel each other out, thereby preventing a tone quality of a reproduced sound from being deteriorated.
摘要翻译：本发明涉及一种所谓的低音反射电声换能装置，其中具有相同等效质量和不同长度的多个声音导管（端口）设置成与其中结合有电声换能元件的壳体连通。因此，各声道中产生的共振和反谐振相互抵消，从而防止再现声音的音质劣化。

6. 发明授权

US06542617B1 Speaker 失效
标题翻译：扬声器
公开(公告)号：US06542617B1
公开(公告)日：2003-04-01
申请号：US09578386
申请日：2000-05-25
申请人： Masao Fujihira , Kenji Tokushige , Ikuo Shinohara
发明人： Masao Fujihira , Kenji Tokushige , Ikuo Shinohara
IPC分类号： H04R2500
CPC分类号： H04R9/04
摘要： In a speaker which is constructed in a manner that a voice coil bobbin is attached to an inner circumferential portion of a cone type diaphragm while a voice coil is wound around the voice coil bobbin, and the voice coil is inserted into a magnetic gap, the voice coil bobbin is formed of a conductive material while the voice coil being fixed is the voice coil bobbin by a soft bonding agent, and in a very high range, the voice coil is operated as a driving coil while the voice coil bobbin is operated as a short coil.
摘要翻译：在扬声器中，音圈架被安装在圆锥型隔膜的内周部分上，同时将音圈卷绕在音圈架上，并将音圈插入到磁隙中，音圈骨架由导电材料形成，而音圈被固定的是音圈筒管，由软粘合剂固定，在非常高的范围内，音圈作为驱动线圈操作，而音圈绕线筒则以短线圈。

7. 发明授权

US6160894A Speaker apparatus and sound reproduction system employing same 失效
标题翻译：扬声器和声音再现系统采用相同的
公开(公告)号：US6160894A
公开(公告)日：2000-12-12
申请号：US861163
申请日：1997-05-21
申请人： Jun Kishigami , Masao Fujihira , Takahiro Muraguchi
发明人： Jun Kishigami , Masao Fujihira , Takahiro Muraguchi
IPC分类号： H04R9/02 , H04R1/00 , H04R3/00 , H04R9/04
CPC分类号： H04R3/00 , H04R1/005 , H04R2209/043
摘要： A speaker apparatus capable of reproducing from low-pitched to high-pitched sounds and a voice reproduction system employing the same. The speaker apparatus includes a speaker unit in which a primary coil is mounted in a gap portion between a plate and a center pole of a magnetic circuit, a secondary coil is disposed within the gap in such a manner as to be fixed to a vibration plate, and a secondary electric current is induced in the secondary coil by a signal current flowing through a primary coil, thereby operating the vibration plate; and a speaker driving circuit adapted to drive the primary coil of the speaker unit in accordance with a digital sound signal.
摘要翻译：能够从低音到高音的声音再现的扬声器装置和采用该扬声器的语音再现系统。扬声器装置包括扬声器单元，其中初级线圈安装在磁盘和磁路的中心极之间的间隙部分中，次级线圈以固定到振动板的方式设置在间隙内并且通过流经初级线圈的信号电流在次级线圈中感应出次级电流，从而操作振动板; 以及扬声器驱动电路，其适于根据数字声音信号驱动扬声器单元的初级线圈。

8. 发明授权

US06587571B1 Speaker 失效
标题翻译：扬声器
公开(公告)号：US06587571B1
公开(公告)日：2003-07-01
申请号：US09574034
申请日：2000-05-18
申请人： Masao Fujihira , Ikuo Shinohara , Kenji Tokushige
发明人： Masao Fujihira , Ikuo Shinohara , Kenji Tokushige
IPC分类号： H04R2500
CPC分类号： H04R9/046
摘要： In a speaker which is constructed in a manner that a voice coil bobbin is attached to an inner circumferential portion of a cone type diaphragm while a voice coil is wound around the voice coil bobbin, and the voice coil is inserted into a magnetic gap, the voice coil bobbin is formed of a conductive material and is provided with a gap extending a lengthwise direction so as to form a one-turn voice coil, and the voice coil is fixed to the voice coil bobbin by a soft bonding agent while a very high frequency audio signal is supplied to the one-turn voice coil forming the voice coil bobbin.
摘要翻译：在扬声器中，音圈架被安装在圆锥型隔膜的内周部分上，同时将音圈卷绕在音圈架上，并将音圈插入到磁隙中，音圈筒管由导电材料形成，并且设置有沿长度方向延伸的间隙以形成单匝音圈，并且音圈通过软粘合剂固定到音圈骨架，同时非常高频率音频信号被提供给形成音圈线轴的单圈音圈。

9. 发明授权

US5909496A Speaker apparatus 失效
标题翻译：扬声器装置
公开(公告)号：US5909496A
公开(公告)日：1999-06-01
申请号：US957935
申请日：1997-10-27
申请人： Jun Kishigami , Masao Fujihira , Takahiro Muraguchi
发明人： Jun Kishigami , Masao Fujihira , Takahiro Muraguchi
IPC分类号： H04R1/06 , H04R1/00 , H04R3/00 , H04S5/02
CPC分类号： H04R1/005 , H04R1/06 , H04R2209/043
摘要： A speaker apparatus which drives an electromagnetic-coupling-type speaker in accordance with a digital signal is provided with a speaker unit, and a plurality of amplifiers corresponding to the number of quantization bits of a digital audio signal. The output terminals of the amplifiers are connected to the respective primary coils, respectively, and the output impedances of the plurality of the amplifiers are made equal to those of the respective primary coils to which the amplifiers are connected. Each bit of each sample of the digital audio signal is amplified by the plurality of the amplifiers and supplied to the respective primary coils, respectively.
摘要翻译：根据数字信号驱动电磁耦合型扬声器的扬声器装置设置有扬声器单元和对应于数字音频信号的量化位数的多个放大器。放大器的输出端子分别连接到相应的初级线圈，并且使多个放大器的输出阻抗与放大器连接到的各个初级线圈的输出端子相等。数字音频信号的每个样本的每一位由多个放大器放大并分别提供给相应的初级线圈。

10. 发明授权

US5862237A Speaker apparatus 失效
标题翻译：扬声器装置
公开(公告)号：US5862237A
公开(公告)日：1999-01-19
申请号：US872134
申请日：1997-06-10
申请人： Jun Kishigami , Masao Fujihira , Takahiro Muraguchi
发明人： Jun Kishigami , Masao Fujihira , Takahiro Muraguchi
IPC分类号： H04R9/02 , H03F3/45 , H03M9/00 , H04R1/00 , H04R3/00 , H04R9/04
CPC分类号： H04R1/005 , H04R3/00
摘要： A speaker device driving drive coils of a speaker such as an electromagnetically coupled speaker by digital sound signals, where a primary coil of the speaker unit is constituted by 15 pieces of coils, the coils are made to correspond to respective bits excluding MSB of a digital sound of 16 bits issued from a serial/parallel converter, each of the coils are connected in a bridge connection to 4 pieces of FETs respectively opposed to each other and constant current sources are connected to the bridge connection portions whereby a coil drive circuit is constituted, currents from the constant current sources are respectively supplied to the coils and a variable resistor is adjusted by which voltages are changed and the currents of the constant current sources are commonly controlled whereby the volume of the speaker is finely driven.
摘要翻译：一种扬声器装置，通过数字声音信号驱动诸如电磁耦合扬声器的扬声器的驱动线圈，其中扬声器单元的初级线圈由15个线圈构成，使得线圈对应于除数字的MSB之外的各个位从串/并行转换器发出的16位声音，每个线圈以桥连接方式连接到彼此相对的4个FET，恒流源连接到桥连接部分，由此构成线圈驱动电路来自恒定电流源的电流分别被提供给线圈，并且调节可变电阻器，通过该可变电阻器改变电压，并且通常控制恒定电流源的电流，由此扬声器的体积被精细驱动。

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