公开(公告)号：US08310307B2

公开(公告)日：2012-11-13

申请号：US13190656

申请日：2011-07-26

Applicant: Tsuyoshi Kawaguchi ,  Mamoru Sekiya ,  Yu Takehara ,  Norimasa Kitagawa

Inventor： Tsuyoshi Kawaguchi ,  Mamoru Sekiya ,  Yu Takehara ,  Norimasa Kitagawa

IPC: H03F3/45

CPC classification number: H03F3/4517

Abstract: The first emitter follower circuit and the second emitter follower circuit can increase an input impedance on the side of the inverting input terminal in the amplifying circuit. As a result, when a feedback circuit is connected between the inverting input terminal and the output terminal of the amplifying circuit, a fluctuation in a gain of the amplifying circuit according to a configuration of the feedback circuit can be suppressed.

Abstract translation: 第一射极跟随器电路和第二射极跟随器电路可以增加放大电路中的反相输入端侧的输入阻抗。 结果，当反相输入端子和放大电路的输出端子之间连接有反馈电路时，可以抑制根据反馈电路的配置的放大电路的增益的波动。

公开(公告)号：US20090140786A1

公开(公告)日：2009-06-04

申请号：US12325513

申请日：2008-12-01

Applicant: Yoshinori NAKANISHI ,  Mamoru SEKIYA

Inventor： Yoshinori NAKANISHI ,  Mamoru SEKIYA

IPC: H03K7/08

CPC classification number: H03F3/217

Abstract: A pulse width modulation circuit includes a first electric-charge accumulator; a second electric-charge accumulator; a first current generator which generates a first current corresponding to the amplitude of an input AC voltage; a second current generator which generates a second current with a constant value; a first current supply controller which supplies the first current to the first electric-charge accumulator; a second current supply controller which supplies the second current to the first electric-charge accumulator; a third current supply controller which supplies the first current to the second electric-charge accumulator; a fourth current supply controller which supplies the second current to the second electric-charge accumulator; and a current limiter which limits the first current to a third current with a predetermined current value, if the amplitude of the AC voltage in the negative side exceeds a predetermined level.

Abstract translation: 脉宽调制电路包括第一电荷累加器; 第二电荷蓄电池; 第一电流发生器，其产生对应于输入AC电压的幅度的第一电流; 产生具有恒定值的第二电流的第二电流发生器; 第一电流供应控制器，其将第一电流提供给第一电荷累加器; 第二电流供应控制器，其将第二电流提供给第一电荷累加器; 第三电流供应控制器，其将第一电流提供给第二电荷累加器; 第四电流供应控制器，其将第二电流提供给第二电荷累加器; 以及如果负侧的交流电压的幅度超过预定电平，则限流器将第一电流限制为具有预定电流值的第三电流。

公开(公告)号：US20120049963A1

公开(公告)日：2012-03-01

申请号：US13190656

申请日：2011-07-26

Applicant: Tsuyoshi KAWAGUCHI ,  Mamoru SEKIYA ,  Yu TAKEHARA ,  Norimasa KITAGAWA

Inventor： Tsuyoshi KAWAGUCHI ,  Mamoru SEKIYA ,  Yu TAKEHARA ,  Norimasa KITAGAWA

IPC: H03F3/04

CPC classification number: H03F3/4517

Abstract: The first emitter follower circuit and the second emitter follower circuit can increase an input impedance on the side of the inverting input terminal in the amplifying circuit. As a result, when a feedback circuit is connected between the inverting input terminal and the output terminal of the amplifying circuit, a fluctuation in a gain of the amplifying circuit according to a configuration of the feedback circuit can be suppressed.

Abstract translation: 第一射极跟随器电路和第二射极跟随器电路可以增加放大电路中的反相输入端侧的输入阻抗。 结果，当反相输入端子和放大电路的输出端子之间连接有反馈电路时，可以抑制根据反馈电路的配置的放大电路的增益的波动。

公开(公告)号：US20120049895A1

公开(公告)日：2012-03-01

申请号：US13190591

申请日：2011-07-26

Applicant: Tsuyoshi KAWAGUCHI ,  Norimasa KITAGAWA ,  Mamoru SEKIYA ,  Naofumi SHIMASAKI ,  Yu TAKEHARA

Inventor： Tsuyoshi KAWAGUCHI ,  Norimasa KITAGAWA ,  Mamoru SEKIYA ,  Naofumi SHIMASAKI ,  Yu TAKEHARA

IPC: H02M11/00 ,  H03F1/34 ,  H03F3/04

CPC classification number: H03F3/3066 ,  H03F1/34 ,  H03F1/52 ,  H03F3/3076 ,  H03F3/3435 ,  H03F2203/30031 ,  H03F2203/30084 ,  H03F2203/30117

Abstract: An amplifying circuit comprises: a first transistor, a second transistor, a third transistor and a fourth transistor provided to an input stage; and a first bias circuit. The input signal is input into a control terminal of the first transistor and a control terminal of the second transistor, a first terminal of the first transistor is connected to a first terminal of the third transistor, a first terminal of the second transistor is connected to a first terminal of the fourth transistor, a second terminal of the first transistor is connected to a first potential, a second terminal of the second transistor is connected to a second potential that is equal to or different from the first potential, a second terminal of the third transistor is connected to a third potential, a second terminal of the fourth transistor is connected to a fourth potential, the first bias circuit is connected between a control terminal of the third transistor and a control terminal of the fourth transistor.

Abstract translation: 放大电路包括：提供给输入级的第一晶体管，第二晶体管，第三晶体管和第四晶体管; 和第一偏置电路。 输入信号输入到第一晶体管的控制端子和第二晶体管的控制端子，第一晶体管的第一端子连接到第三晶体管的第一端子，第二晶体管的第一端子连接到 第四晶体管的第一端子，第一晶体管的第二端子连接到第一电位，第二晶体管的第二端子连接到等于或不同于第一电位的第二电位，第二端子 第三晶体管连接到第三电位，第四晶体管的第二端连接到第四电位，第一偏置电路连接在第三晶体管的控制端和第四晶体管的控制端之间。

公开(公告)号：US07773373B2

公开(公告)日：2010-08-10

申请号：US11775993

申请日：2007-07-11

Applicant: Tsuyoshi Morohashi ,  Mamoru Sekiya ,  Norio Etoh ,  Norimasa Kitagawa

Inventor： Tsuyoshi Morohashi ,  Mamoru Sekiya ,  Norio Etoh ,  Norimasa Kitagawa

IPC: G06F1/16

CPC classification number: F16F15/021

Abstract: The present invention provides a vibration-damping structure for an audio apparatus, accommodating a main transformer, which becomes a vibration source when driven, the vibration-damping structure including: a main chassis to which a signal processing board for processing an audio signal is attached, the first chassis defining a portion of an outer shape of an assembly of the vibration-damping structure; a sub-chassis fastened to an inner surface of the main chassis so as to be partially in contact with the inner surface of the main chassis via a plurality of fastening members; and a component accommodating chassis fastened to an inner surface of the sub-chassis so as to be partially in contact with the inner surface of the sub-chassis via other fastening members, wherein the main transformer is fixed to the component accommodating chassis.

Abstract translation: 本发明提供了一种用于音频装置的振动阻尼结构，其容纳主变压器，该主变压器在被驱动时成为振动源，所述减振结构包括：附接有用于处理音频信号的信号处理板的主机架 所述第一底盘限定所述减振结构的组件的外部形状的一部分; 副底盘，其固定在所述主底盘的内表面上，以便经由多个紧固构件部分地与所述主底盘的内表面接触; 以及固定在所述副底盘的内表面上的部件容纳底盘，以便经由其它紧固构件部分地与所述副底盘的内表面接触，其中所述主变压器固定到所述部件容纳底盘。

公开(公告)号：US20090214075A1

公开(公告)日：2009-08-27

申请号：US12361093

申请日：2009-01-28

Applicant: Takeru INOUE ,  Mamoru Sekiya

Inventor： Takeru INOUE ,  Mamoru Sekiya

IPC: H04R1/00

CPC classification number: H04R9/045 ,  H04R7/127 ,  H04R9/063 ,  H04R2207/021 ,  H04R2307/029 ,  H04R2499/13

Abstract: The loudspeaker includes a dome diaphragm that is made of a base material impregnated in a thermosetting resin; a cone diaphragm whose outer circumference side end portion is coupled with an outer circumference end portion of the dome diaphragm; and a voice coil having a bobbin whose one end is coupled to a back surface of the dome diaphragm, and whose outer curved surface is coupled with an inner circumference end portion of the cone diaphragm, wherein the dome diaphragm is provided with a plurality of cone-shaped projections that is formed by hardening the thermosetting resin, projecting from the back surface, and disposed in a circular pattern with a space between each other, the plurality of cone-shaped projections defining a coupling portion to which the one end of the bobbin is coupled.

Abstract translation: 扬声器包括由浸渍在热固性树脂中的基材制成的圆顶隔膜; 锥形隔膜，其外周侧端部与圆顶隔膜的外周端部结合; 以及音圈，其具有一端耦合到所述圆顶隔膜的后表面的线轴，并且其外曲面与所述锥形隔膜的内周端部联接，其中所述圆顶隔膜设置有多个锥体 形状的突起，其通过硬化热固性树脂，从后表面突出并且以相互间隔开的空间设置成圆形图案，所述多个锥形突起限定了联接部分，所述线轴的一端 被耦合。

公开(公告)号：US20080149805A1

公开(公告)日：2008-06-26

申请号：US11775993

申请日：2007-07-11

Applicant: Tsuyoshi Morohashi ,  Mamoru Sekiya ,  Norio Etoh ,  Norimasa Kitagawa

Inventor： Tsuyoshi Morohashi ,  Mamoru Sekiya ,  Norio Etoh ,  Norimasa Kitagawa

IPC: F16F7/00 ,  F16M1/00

CPC classification number: F16F15/021

Abstract: The present invention provides a vibration-damping structure for an audio apparatus, accommodating a main transformer, which becomes a vibration source when driven, the vibration-damping structure including: a main chassis to which a signal processing board for processing an audio signal is attached, the first chassis defining a portion of an outer shape of an assembly of the vibration-damping structure; a sub-chassis fastened to an inner surface of the main chassis so as to be partially in contact with the inner surface of the main chassis via a plurality of fastening members; and a component accommodating chassis fastened to an inner surface of the sub-chassis so as to be partially in contact with the inner surface of the sub-chassis via other fastening members, wherein the main transformer is fixed to the component accommodating chassis.

Abstract translation: 本发明提供了一种用于音频装置的振动阻尼结构，其容纳主变压器，该主变压器在被驱动时成为振动源，所述减振结构包括：附接有用于处理音频信号的信号处理板的主机架 所述第一底盘限定所述减振结构的组件的外部形状的一部分; 副底盘，其固定在所述主底盘的内表面上，以便经由多个紧固构件部分地与所述主底盘的内表面接触; 以及固定在所述副底盘的内表面上的部件容纳底盘，以便经由其它紧固构件部分地与所述副底盘的内表面接触，其中所述主变压器固定到所述部件容纳底盘。

公开(公告)号：US20080062023A1

公开(公告)日：2008-03-13

申请号：US11739826

申请日：2007-04-25

Applicant: Masatoshi Nakabo ,  Mamoru Sekiya ,  Masaaki Inoue

Inventor： Masatoshi Nakabo ,  Mamoru Sekiya ,  Masaaki Inoue

IPC: H04B1/10 ,  H02M11/00

CPC classification number: H03H11/1239 ,  H03F1/26 ,  H03F3/45475 ,  H03F2200/372 ,  H03F2203/45138 ,  H03F2203/45521 ,  H03F2203/45528

Abstract: A low-pass filter with a high signal-to-noise ratio is provided. A low-pass filter includes a first RC filter circuit, a differential operation circuit subtracting an output signal from a low frequency component of an input signal and outputting a differential signal, a second RC filter circuit, a voltage-current conversion circuit, and a capacitor. The voltage-current conversion circuit includes an operational amplifier, a first resistor, and a feedback circuit generating a feedback voltage in accordance with a voltage applied to the first resistor. If resistance values of first to fourth resistors are R1, R2, R3, R4, a relational expression of R1*R3=R2*R4 is satisfied, and output current i becomes constant regardless of a resistance value of a load resistance. Since only a first resistor is connected between the input and the output of the voltage-current conversion circuit, thermal noise decreases, and a signal-to-noise ratio becomes high.

Abstract translation: 提供了具有高信噪比的低通滤波器。 低通滤波器包括第一RC滤波器电路，差分运算电路，从输入信号的低频分量中减去输出信号并输出​​差分信号，第二RC滤波电路，电压 - 电流转换电路和 电容器。 电压 - 电流转换电路包括运算放大器，第一电阻器和反馈电路，该反馈电路根据施加到第一电阻器的电压产生反馈电压。 如果第一至第四电阻器的电阻值为R 1，R 2，R 3，R 4，a 满足R 1→R 3→R 2→R 4的关系表达式，并且输出电流i成为 不管负载电阻的电阻值如何。 由于在电压 - 电流转换电路的输入和输出之间仅连接第一电阻器，所以热噪声降低，并且信噪比变高。

公开(公告)号：US06697002B2

公开(公告)日：2004-02-24

申请号：US10342205

申请日：2003-01-15

Applicant: Mamoru Sekiya ,  Youichi Kudoh ,  Satomi Yamaguchi

Inventor： Mamoru Sekiya ,  Youichi Kudoh ,  Satomi Yamaguchi

IPC: H03M300

CPC classification number: G11C27/024 ,  H03H11/04

Abstract: A low-pass filter (700) includes a differential operation circuit (2), a voltage-current conversion circuit (3), and a capacitor (C1). The voltage-current conversion circuit (3) and the capacitor (C1) form a filter circuit (700), and therefore the low-pass filter can remove a high frequency component. The differential operation circuit (2) outputs a differential signal (&phgr;C) for the difference between an analog signal (&phgr;A) and an output signal (&phgr;B). Therefore, with the differential operation circuit (2), a necessary frequency band is not attenuated. The phase level of the output signal (&phgr;B) output from the low-pass filter (700) can be substantially equal to that of the analog signal (&phgr;A) by the differential operation circuit (2). Therefore, the low-pass filter have a higher attenuation ratio for a high frequency component.

Abstract translation: 低通滤波器（700）包括差分运算电路（2），电压 - 电流转换电路（3）和电容器（C1）。 电压电流转换电路（3）和电容器（C1）形成滤波电路（700），因此低通滤波器可以去除高频分量。 差分运算电路（2）输出用于模拟信号（phiA）和输出信号（phiB）之间的差的差分信号（phiC）。 因此，通过差分运算电路（2），必要的频带不衰减。 从低通滤波器（700）输出的输出信号（phiB）的相位电平可以通过差分运算电路（2）基本上等于模拟信号（phiA）的相位电平。 因此，低通滤波器对于高频分量具有较高的衰减比。

公开(公告)号：US4072907A

公开(公告)日：1978-02-07

申请号：US740979

申请日：1976-11-11

Applicant: Mamoru Sekiya ,  Nobuyuki Sakabe

Inventor： Mamoru Sekiya ,  Nobuyuki Sakabe

IPC: H03F3/30 ,  H03F3/45

CPC classification number: H03F3/3071 ,  H03F3/45085 ,  H03F2203/45472 ,  H03F2203/45496 ,  H03F2203/45598 ,  H03F2203/45601 ,  H03F2203/45701

Abstract: An amplifier circuit comprising a differential circuit including means for preventing base bias voltages applied to driver transistors connected with the transistors constituting the differential amplifier from becoming unbalanced. Means is also provided which is adapted to prevent so-called shock noise from appearing at the output of the amplifier circuit. Such means may be constructed by using a delay circuit.

Abstract translation: 一种包括差分电路的放大器电路，包括用于防止施加到与构成差分放大器的晶体管连接的驱动晶体管的基极偏置电压变得不均衡的装置。 还提供了适于防止所谓的冲击噪声出现在放大器电路的输出端的装置。 这种装置可以通过使用延迟电路构成。