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1. 发明申请

US20150237442A1 Digital Microphone and Position-to-Frequency Converter 有权
标题翻译：数字麦克风和位置 - 频率转换器
公开(公告)号：US20150237442A1
公开(公告)日：2015-08-20
申请号：US14615471
申请日：2015-02-06
申请人： Koichi Maezawa , Koichiro Tanoue
发明人： Koichi Maezawa , Koichiro Tanoue
IPC分类号： H04R3/00 , H04R1/08
CPC分类号： H04R3/00 , G01H11/06 , H03M3/43 , H04R1/04 , H04R1/08 , H04R23/00
摘要： A digital microphone includes: a cavity resonator operatable in a micrometer, millimeter, or electromagnetic waveband, the cavity resonator having a metal wall including a conductive membrane 32 that vibrates in response to incident acoustic waves and converts the shift of the membrane 32 into a resonance frequency of the cavity resonator; an FM-signal generator that modulates the resonance frequency of the cavity resonator in response to the shift of the membrane 32 and outputs FM signals from the metal wall other than the membrane; and a ΔΣ-modulated-signal generator that generates ΔΣ-modulated signals from the FM signals. The FM-signal generator includes a slot 36, a micro-strip line 38, and a negative resistive element 40. The ΔΣ-modulated-signal generator includes an edge detector 42.
摘要翻译：数字麦克风包括：可在微米，毫米或电磁波段中操作的空腔谐振器，空腔谐振器具有金属壁，该金属壁包括响应于入射的声波而振动的导电膜32，并将膜32的移位转换为共振谐振腔的频率; FM信号发生器，其响应于膜32的移动而调制空腔谐振器的谐振频率，并从除了膜之外的金属壁输出FM信号; 和调制信号发生器，用于从FM信号产生和调制信号。 FM信号发生器包括槽36，微带线38和负电阻元件40.该调制信号发生器包括边缘检测器42。

2. 发明申请

US20080258952A1 Delta Sigma Modulator and Delta Sigma Analog-Digital Converter 失效
标题翻译： Delta Sigma调制器和Delta Sigma模数转换器
公开(公告)号：US20080258952A1
公开(公告)日：2008-10-23
申请号：US11883886
申请日：2006-02-10
申请人： Koichi Maezawa , Takashi Mizutani
发明人： Koichi Maezawa , Takashi Mizutani
IPC分类号： H03M3/02
CPC分类号： H03M3/458
摘要： The present invention provides a ΔΣ modulator of a frequency modulation system that can lessen the requirement of linearity for an oscillator.A ΔΣ modulator comprises an oscillating apparatus that changes a frequency thereof according to an input signal, a quantizing means for quantizing a frequency modulation signal output from the oscillating apparatus, and an operation means for applying an operation to a digital signal output from the quantizing means. The oscillating apparatus comprises an oscillator that changes a frequency thereof according to the input signal, a reference signal source that outputs a reference signal at a predetermined frequency, a mixer that receives the signals from the oscillator and the reference signal source, and a low-pass filter that passes a low frequency component of a signal output from the mixer. The center oscillation frequency of the oscillator is set higher than a target center oscillation frequency of the frequency modulation signal.
摘要翻译：本发明提供一种频率调制系统的DeltaSigma调制器，其可以减少对振荡器的线性度的要求。 DeltaSigma调制器包括根据输入信号改变其频率的振荡装置，用于量化从振荡装置输出的频率调制信号的量化装置，以及用于对从量化装置输出的数字信号进行操作的操作装置。振荡装置包括根据输入信号改变其频率的振荡器，以预定频率输出参考信号的参考信号源，接收来自振荡器和参考信号源的信号的混频器，通过滤波器，其通过从混频器输出的信号的低频分量。振荡器的中心振荡频率被设定为高于调频信号的目标中心振荡频率。

3. 发明授权

US07609187B2 ΔΣ modulator and ΔΣ analog-digital converter 失效
标题翻译： DeltaSigma调制器和DeltaSigma模数转换器
公开(公告)号：US07609187B2
公开(公告)日：2009-10-27
申请号：US11883886
申请日：2006-02-10
申请人： Koichi Maezawa , Takashi Mizutani
发明人： Koichi Maezawa , Takashi Mizutani
IPC分类号： H03M3/00
CPC分类号： H03M3/458
摘要： The present invention provides a ΔΣ modulator of a frequency modulation system that can lessen the requirement of linearity for an oscillator.A ΔΣ modulator comprises an oscillating apparatus that changes a frequency thereof according to an input signal, a quantizing means for quantizing a frequency modulation signal output from the oscillating apparatus, and an operation means for applying an operation to a digital signal output from the quantizing means. The oscillating apparatus comprises an oscillator that changes a frequency thereof according to the input signal, a reference signal source that outputs a reference signal at a predetermined frequency, a mixer that receives the signals from the oscillator and the reference signal source, and a low-pass filter that passes a low frequency component of a signal output from the mixer. The center oscillation frequency of the oscillator is set higher than a target center oscillation frequency of the frequency modulation signal.
摘要翻译：本发明提供一种频率调制系统的DeltaSigma调制器，其可以减少对振荡器的线性度的要求。 DeltaSigma调制器包括根据输入信号改变其频率的振荡装置，用于量化从振荡装置输出的频率调制信号的量化装置，以及用于对从量化装置输出的数字信号进行操作的操作装置。振荡装置包括根据输入信号改变其频率的振荡器，以预定频率输出参考信号的参考信号源，接收来自振荡器和参考信号源的信号的混频器，通过滤波器，其通过从混频器输出的信号的低频分量。振荡器的中心振荡频率被设定为高于调频信号的目标中心振荡频率。

4. 发明授权

US5313117A Semiconductor logic circuit using two n-type negative resistance devices 失效
标题翻译：半导体逻辑电路使用两个n型负电阻器件
公开(公告)号：US5313117A
公开(公告)日：1994-05-17
申请号：US913108
申请日：1992-07-14
申请人： Koichi Maezawa
发明人： Koichi Maezawa
IPC分类号： H01L27/06 , H03K3/315 , H03K3/36 , H03K19/08 , H03K19/10 , H03K17/125
CPC分类号： B82Y10/00 , H01L27/0605 , H03K19/08 , H03K19/10 , H03K3/315 , H03K3/36
摘要： A semiconductor elements having N-type negative resistance characteristics are connected in series to obtain a series circuit. The two ends of the series circuit serve as drive voltage terminals to which periodic drive voltages are applied. At least one of the semiconductor elements has a control electrode to which a voltage is applied to change the peak current. A connection point between the two semiconductor elements serves as an output terminal.
摘要翻译：具有N型负电阻特性的半导体元件串联连接以获得串联电路。串联电路的两端用作施加周期性驱动电压的驱动电压端子。至少一个半导体元件具有施加电压以改变峰值电流的控制电极。两个半导体元件之间的连接点用作输出端子。

5. 发明授权

US4776224A Planetary gear type reduction starter 失效
标题翻译：行星齿轮减速起动器
公开(公告)号：US4776224A
公开(公告)日：1988-10-11
申请号：US790477
申请日：1985-10-23
申请人： Koichi Maezawa , Yozo Nakamura , Naoyuki Tanaka , Fumiaki Kasubuchi
发明人： Koichi Maezawa , Yozo Nakamura , Naoyuki Tanaka , Fumiaki Kasubuchi
IPC分类号： F02N15/02 , F02N15/06 , F16H55/17 , F16H55/00 , F02N11/00
CPC分类号： F02N15/06 , Y10T74/13 , Y10T74/131 , Y10T74/137 , Y10T74/19949 , Y10T74/19972
摘要： A reduction starter employing a planetary gear type reduction gear mechanism having an outer ring gear displaceable radially of a common axis of a central sun gear and an output shaft carrying planet gears for revolution about the common axis. The outer ring gear is formed by an internally toothed ring gear elastically deformable to assure uniform distribution of load torque to all planet gears. The tooth root bending stress of the ring gear is substantially equalized to the outer periphery bending stress thereof to improve the load performance of the planetary gear type reduction gear mechanism and thus reduce the size and weight of the starter. The outer ring gear has an outer rim of a radial thickness t and a plurality of radially inwardly extending teeth each having a height h. The rim thickness t is determined to'fall with a range of from +.ltoreq.0.8 h to +.gtoreq.0.4 h.
摘要翻译：一种减速起动器，其采用行星齿轮减速齿轮机构，该机构具有可沿着中心太阳齿轮的公共轴线径向位移的外齿圈，以及承载围绕公共轴旋转的行星齿轮的输出轴。外齿圈由可变形的内齿齿圈形成，以确保负载转矩均匀分布到所有行星齿轮。齿圈的齿根弯曲应力基本上与其外周弯曲应力相等，以提高行星齿轮减速机构的负载性能，从而减小起动器的尺寸和重量。外圈齿轮具有径向厚度t的外缘和多个具有高度h的径向向内延伸的齿。边缘厚度t被确定为在+ / = 0.4h的范围内下降。

6. 发明授权

US09503811B2 Digital microphone and position-to-frequency converter 有权
标题翻译：数字麦克风和位置 - 频率转换器
公开(公告)号：US09503811B2
公开(公告)日：2016-11-22
申请号：US14615471
申请日：2015-02-06
申请人： Koichi Maezawa , Koichiro Tanoue
发明人： Koichi Maezawa , Koichiro Tanoue
IPC分类号： H04R3/00 , H04R1/08
CPC分类号： H04R3/00 , G01H11/06 , H03M3/43 , H04R1/04 , H04R1/08 , H04R23/00
摘要： A digital microphone includes: a cavity resonator operatable in a micrometer, millimeter, or electromagnetic waveband, the cavity resonator having a metal wall including a conductive membrane 32 that vibrates in response to incident acoustic waves and converts the shift of the membrane 32 into a resonance frequency of the cavity resonator; an FM-signal generator that modulates the resonance frequency of the cavity resonator in response to the shift of the membrane 32 and outputs FM signals from the metal wall other than the membrane; and a ΔΣ-modulated-signal generator that generates ΔΣ-modulated signals from the FM signals. The FM-signal generator includes a slot 36, a micro-strip line 38, and a negative resistive element 40. The ΔΣ-modulated-signal generator includes an edge detector 42.
摘要翻译：数字麦克风包括：可在微米，毫米或电磁波段中操作的空腔谐振器，空腔谐振器具有金属壁，该金属壁包括响应于入射的声波而振动的导电膜32，并将膜32的移位转换为共振谐振腔的频率; FM信号发生器，其响应于膜32的移动而调制空腔谐振器的谐振频率，并从除了膜之外的金属壁输出FM信号; 以及ΔΣ调制信号发生器，其从FM信号产生ΔΣ调制信号。 FM信号发生器包括槽36，微带线38和负电阻元件40.ΔΣ调制信号发生器包括边缘检测器42。

7. 发明授权

US08077886B2 Digital microphone 有权
标题翻译：数字麦克风
公开(公告)号：US08077886B2
公开(公告)日：2011-12-13
申请号：US12401015
申请日：2009-03-10
申请人： Tetsuya Motobayashi , Koichi Maezawa
发明人： Tetsuya Motobayashi , Koichi Maezawa
IPC分类号： H01R25/00
CPC分类号： H04R1/04 , H03M3/43
摘要： A digital microphone comprises a ΔΣ modulator. The ΔΣ modulator has a resonator including a membrane which vibrates by receiving a sound wave and a wiring pattern disposed opposite to the membrane, an oscillator, including the resonator, for outputting an FM signal according to the vibration of the membrane, and a one-bit quantizer for outputting a one-bit quantized signal by sampling the FM signal with a high-frequency clock.
摘要翻译：数字麦克风包括＆Dgr＆amp; 调制器。＆Dgr＆＆调制器具有共振器，其包括通过接收声波而振动的膜和与膜相对设置的布线图案，包括谐振器的振荡器，用于根据膜的振动输出FM信号，以及一位量化器用于通过用高频时钟采样FM信号来输出一位量化信号。

8. 发明授权

US06388597B1 &Dgr;-&Sgr; modulator and &Dgr;-&Sgr; A/D converter 失效
标题翻译： DELTA-SIGMA调制器和DELTA-SIGMA A / D转换器
公开(公告)号：US06388597B1
公开(公告)日：2002-05-14
申请号：US09941938
申请日：2001-08-30
申请人： Koichi Maezawa , Takashi Mizutani
发明人： Koichi Maezawa , Takashi Mizutani
IPC分类号： H03M100
CPC分类号： B82Y10/00 , H03K5/249 , H03M3/30
摘要： A &Dgr;-&Sgr; converter comprises a &Dgr;-&Sgr; modulator and a digital filter. The &Dgr;-&Sgr; modulator has a comparator having two resonant tunnel diodes connected to each other in series between two terminals and a field effect transistor connected in parallel to one of the resonant tunnel diodes, a conversion input transistor for converting an input voltage into electric current, a capacitor provided so that charge amount thereof is decreased by flow of electric current through the conversion input transistor and an electric potential proportional to the charge amount is used for the input electric potential to the comparator, and a feedback transistor, to which an output of the comparator is inputted, operating in such a way as to increase the charge amount of the capacitance element when the output of the comparator becomes a high level.
摘要翻译： DELTA-SIGMA转换器包括DELTA-SIGMA调制器和数字滤波器。 DELTA-SIGMA调制器具有一个比较器，它具有串联连接在两个端子之间的两个谐振隧道二极管和一个并联连接到谐振隧道二极管之一的场效应晶体管，转换输入晶体管用于将输入电压转换为电流设置电容器，使得其电荷量通过转换输入晶体管的电流流过而减小，并且与电荷量成比例的电位用于比较器的输入电位，反馈晶体管用于输出输入比较器，当比较器的输出变为高电平时，以增加电容元件的电荷量的方式进行操作。

9. 发明申请

US20090232339A1 DIGITAL MICROPHONE 有权
标题翻译：数字麦克风
公开(公告)号：US20090232339A1
公开(公告)日：2009-09-17
申请号：US12401015
申请日：2009-03-10
申请人： Tetsuya MOTOBAYASHI , Koichi Maezawa
发明人： Tetsuya MOTOBAYASHI , Koichi Maezawa
IPC分类号： H04R19/04
CPC分类号： H04R1/04 , H03M3/43
摘要： A digital microphone comprises a ΔΣ modulator. The ΔΣ modulator has a resonator including a membrane which vibrates by receiving a sound wave and a wiring pattern disposed opposite to the membrane, an oscillator, including the resonator, for outputting an FM signal according to the vibration of the membrane, and a one-bit quantizer for outputting a one-bit quantized signal by sampling the FM signal with a high-frequency clock.
摘要翻译：数字麦克风包括DeltaSigma调制器。 DeltaSigma调制器具有包括通过接收声波而振动的膜和与膜相对设置的布线图案的振荡器，包括谐振器的振荡器，用于根据膜的振动输出FM信号，用于通过用高频时钟采样FM信号来输出一位量化信号。

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