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11. 发明申请

US20070251322A1 Sensing Apparatus 有权
标题翻译：感应器
公开(公告)号：US20070251322A1
公开(公告)日：2007-11-01
申请号：US11659764
申请日：2005-08-11
申请人： Nobuo Tsukamoto , Kazuo Akaike , Tsukasa Kobata
发明人： Nobuo Tsukamoto , Kazuo Akaike , Tsukasa Kobata
IPC分类号： G01H13/00
CPC分类号： G01N11/16 , G01G3/13 , G01N29/036 , G01N29/4472 , G01N2291/0256 , G01N2291/02809
摘要： An object of the present invention is to provide a sensing instrument capable to detect a substance existing in a very small quantity, such as environmental pollutants, instantly with a high degree of precision. As a specific means for solving the problem, a frequency signal from a crystal oscillator is sampled using a frequency signal from a reference clock generating part, the sampling value is outputted in a digital signal, quadrature detection is conducted with the digital signal for a frequency signal corresponding to the output signal, the rotational vector rotating at a frequency corresponding to the difference between the frequency of the frequency signal and the frequency of a sinusoidal wave used for the quadrature detection is taken out, and the variation of the frequency is detected by detecting the velocity of the rotational vector based on the respective sampling values. In addition to that, the measurement range of the variation of frequency can be widened by multiplying the above-described rotational vector by the reversely rotational vector corresponding to the velocity of the rotational vector.
摘要翻译：本发明的目的是提供一种能够以高精度立即检测诸如环境污染物等非常少的物质的感测装置。作为解决该问题的具体手段，使用来自基准时钟生成部的频率信号对来自晶体振荡器的频率信号进行采样，以数字信号输出采样值，利用数字信号进行频率正交检波对应于输出信号的信号，取出以与频率信号的频率和用于正交检测的正弦波的频率之间的差相对应的频率旋转的旋转矢量，并且频率的变化由基于相应的采样值来检测旋转矢量的速度。除此之外，通过将上述旋转矢量乘以与旋转矢量的速度对应的反向旋转矢量，可以扩大频率变化的测量范围。

12. 发明申请

US20120218048A1 OSCILLATION DEVICE 失效
标题翻译：振荡器件
公开(公告)号：US20120218048A1
公开(公告)日：2012-08-30
申请号：US13406694
申请日：2012-02-28
申请人： Kazuo Akaike , Kaoru Kobayashi
发明人： Kazuo Akaike , Kaoru Kobayashi
IPC分类号： H03L7/00
CPC分类号： H03L1/00
摘要： Provided is an oscillation device capable of obtaining a stable oscillation frequency by compensating for a change in oscillation frequency caused with an elapse of operating time of a quartz-crystal oscillator. A difference value ΔF between a frequency difference between first and second quartz-crystal oscillators after a predetermined period of time has elapsed from a reference time and a frequency difference between the first and second quartz-crystal oscillators at the reference time is determined.
摘要翻译：提供一种能够通过补偿由石英晶体振荡器的经过时间引起的振荡频率变化而获得稳定的振荡频率的振荡装置。确定从参考时间起经过了预定时间段之后的第一和第二石英晶体振荡器之间的频率差与基准时刻的第一和第二石英晶体振荡器之间的频率差的差值Dgr; F。

13. 发明申请

US20110156823A1 Piezoelectric oscillator 失效
标题翻译：压电振荡器
公开(公告)号：US20110156823A1
公开(公告)日：2011-06-30
申请号：US12927888
申请日：2010-11-29
申请人： Mitsuaki Koyama , Shigetaka Kaga , Kazuo Akaike , Shigenori Watanabe
发明人： Mitsuaki Koyama , Shigetaka Kaga , Kazuo Akaike , Shigenori Watanabe
IPC分类号： H03B1/00
CPC分类号： H03L1/04 , H03H9/0509 , H03H9/1021 , H03H9/132 , H03H9/19 , H03L1/023 , H03L1/025
摘要： There is provided a temperature compensated piezoelectric oscillator which excels in frequency stability and has a good electronic noise characteristic, and with which a circuit can be structured simply. An auxiliary oscillator unit 21 sharing a crystal substrate 2 with a main oscillator unit 11 outputting a set frequency f0 to an outside is used as a temperature detecting unit 32 detecting a temperature T for obtaining a compensation voltage ΔV in a temperature compensated piezoelectric oscillator (TCXO), and electrodes 13, 23 of the main oscillator unit 11 and the auxiliary oscillator unit 21 are provided separately on the crystal substrate 2. For example, a fundamental wave and an overtone are used or a thickness shear vibration and a contour shear vibration are used in the main oscillator unit 11 and the auxiliary oscillator unit 21, respectively.
摘要翻译：提供了一种温度补偿压电振荡器，其频率稳定性优异并且具有良好的电子噪声特性，并且可以简单地构造电路。使用共用晶体基板2的辅助振荡器单元21与将外部设定频率f0的主振荡器单元11共同作为温度检测单元32，检测用于获得温度补偿压电振荡器中的补偿电压＆Dgr; V的温度T （TCXO）和主振荡器单元11和辅助振荡器单元21的电极13,23分别设置在晶体基板2上。例如，使用基波和泛音，或者使用厚度剪切振动和轮廓剪切在主振荡器单元11和辅助振荡器单元21中分别使用振动。

14. 发明申请

US20110080223A1 Voltage controlled oscillator 失效
标题翻译：压控振荡器
公开(公告)号：US20110080223A1
公开(公告)日：2011-04-07
申请号：US12924515
申请日：2010-09-29
申请人： Junichiro Yamakawa , Kazuo Akaike , Mikio Takano , Hiroshi Hoshigami , Kenji Kawahata , Kietsu Saito , Yasushi Yamamoto , Tatsunori Onzuka , Toshimasa Tsuda , Susumu Yoshimoto
发明人： Junichiro Yamakawa , Kazuo Akaike , Mikio Takano , Hiroshi Hoshigami , Kenji Kawahata , Kietsu Saito , Yasushi Yamamoto , Tatsunori Onzuka , Toshimasa Tsuda , Susumu Yoshimoto
IPC分类号： H03B5/12
CPC分类号： H03B5/1243 , H03B5/1203 , H03B2200/0008
摘要： There is provided a voltage controlled oscillator that is compact and can be manufactured at low cost. The voltage controlled oscillator is structured to include: a resonance part including a variable capacitance element and an inductance element, the variable capacitance element having a capacitance that varies according to a control voltage for frequency control input from an external part, and a series resonant frequency of the resonance part being adjusted according to the capacitance; an amplifying part amplifying a frequency signal from the resonance part; and a feedback part including a capacitance element for feedback and feeding the frequency signal amplified by the amplifying part back to the resonance part to form an oscillation loop together with the amplifying part and the resonance part, wherein the amplifying part is provided in an integrated circuit chip, and the resonance part and the capacitance element for feedback are formed as circuit components separate from the integrated circuit chip. The circuit components are selected according to an oscillation frequency.
摘要翻译：提供了一种紧凑的压控振荡器，并且可以以低成本制造。压控振荡器被构造为包括：包括可变电容元件和电感元件的谐振部分，所述可变电容元件具有根据用于来自外部部分的频率控制输入的控制电压而变化的电容和串联谐振频率的共振部分根据电容进行调节; 放大部分，用于放大来自谐振部分的频率信号; 以及反馈部分，包括用于反馈的电容元件，并将由放大部分放大的频率信号馈送到谐振部分，以与放大部分和谐振部分一起形成振荡环路，其中放大部分设置在集成电路中芯片，并且用于反馈的谐振部分和电容元件形成为与集成电路芯片分离的电路部件。根据振荡频率选择电路元件。

15. 发明授权

US07899633B2 Sensing apparatus 有权
标题翻译：传感装置
公开(公告)号：US07899633B2
公开(公告)日：2011-03-01
申请号：US12154941
申请日：2008-05-28
申请人： Nobuo Tsukamoto , Kazuo Akaike , Tsukasa Kobata
发明人： Nobuo Tsukamoto , Kazuo Akaike , Tsukasa Kobata
IPC分类号： G01N23/00
CPC分类号： G01N11/16 , G01G3/13 , G01N29/036 , G01N29/4472 , G01N2291/0256 , G01N2291/02809
摘要： An object of the present invention is to provide a sensing instrument capable to detect a substance existing in a very small quantity, such as environmental pollutants, instantly with a high degree of precision. As a specific means for solving the problem, a frequency signal from a crystal oscillator is sampled using a frequency signal from a reference clock generating part, the sampling value is outputted in a digital signal, quadrature detection is conducted with the digital signal for a frequency signal corresponding to the output signal, the rotational vector rotating at a frequency corresponding to the difference between the frequency of the frequency signal and the frequency of a sinusoidal wave used for the quadrature detection is taken out, and the variation of the frequency is detected by detecting the velocity of the rotational vector based on the respective sampling values. In addition to that, the measurement range of the variation of frequency can be widened by multiplying the above-described rotational vector by the reversely rotational vector corresponding to the velocity of the rotational vector.
摘要翻译：本发明的目的是提供一种能够以高精度立即检测诸如环境污染物等非常少的物质的感测装置。作为解决该问题的具体手段，使用来自基准时钟生成部的频率信号对来自晶体振荡器的频率信号进行采样，以数字信号输出采样值，利用数字信号进行频率正交检波对应于输出信号的信号，取出以与频率信号的频率和用于正交检测的正弦波的频率之间的差相对应的频率旋转的旋转矢量，并且频率的变化由基于相应的采样值来检测旋转矢量的速度。除此之外，通过将上述旋转矢量乘以与旋转矢量的速度对应的反向旋转矢量，可以扩大频率变化的测量范围。

16. 发明授权

US07825701B2 Frequency synthesizer 有权
标题翻译：频率合成器
公开(公告)号：US07825701B2
公开(公告)日：2010-11-02
申请号：US12225563
申请日：2007-03-14
申请人： Tsukasa Kobata , Tsuyoshi Shiobara , Kazuo Akaike , Nobuo Tsukamoto
发明人： Tsukasa Kobata , Tsuyoshi Shiobara , Kazuo Akaike , Nobuo Tsukamoto
IPC分类号： H03L7/085 , H03L7/08
CPC分类号： H03L7/18 , H03L7/085 , H03L7/091 , H03L7/10 , H03L7/185 , H03L7/187 , H03L2207/06 , H03L2207/12
摘要： An object of the present invention provides a frequency synthesizer having a broad frequency entraining range which can finely set a frequency over a broad band by a novel principle.As s specific solving means, a sinusoidal signal of an output frequency of a voltage-controlled oscillator is subjected to orthogonal detection, a vector rotating at the differential frequency (speed) between the output frequency and the frequency of the frequency signal used for the detection is created, and the frequency of a vector when the output frequency of the voltage-controlled oscillator is equal to a set value is calculated in advance. The voltage signal corresponding to the difference between the frequency of the vector and the calculated frequency is fed back to the voltage-controlled oscillator when the voltage-controlled oscillator is driven, and PLL is formed so that the difference is equal to zero. Accordingly, the output frequency of the voltage-controlled oscillator is adjusted to the set frequency when PLL is locked. After the difference between both the frequencies is increased after PLL is locked, the set value is integrated by the integrating circuit portion and added to the control voltage.
摘要翻译：本发明的目的是提供一种频率合成器，其具有宽的频率夹带范围，可通过新的原理在宽带上精细地设定频率。作为具体的解决方法，对压控振荡器的输出频率的正弦信号进行正交检测，以用于检测的频率信号的输出频率和频率之间的差分频率（速度）旋转的矢量并且预先计算当压控振荡器的输出频率等于设定值时的矢量频率。当驱动压控振荡器时，与矢量频率和计算出的频率之间的差值相对应的电压信号被反馈到压控振荡器，并且形成PLL，使得差值等于零。因此，当PLL被锁定时，压控振荡器的输出频率被调整到设定频率。在PLL被锁定之后两个频率之间的差异增加之后，设定值被积分电路部分积分并加到控制电压上。

17. 发明申请

US20090288488A1 PIEZOELECTRIC SENSOR AND SENSING INSTRUMENT 有权
标题翻译：压电传感器和感应仪器
公开(公告)号：US20090288488A1
公开(公告)日：2009-11-26
申请号：US12454518
申请日：2009-05-19
申请人： Junichiro Yamakawa , Kazuo Akaike , Takeru Mutoh , Hiroyuki Kukita
发明人： Junichiro Yamakawa , Kazuo Akaike , Takeru Mutoh , Hiroyuki Kukita
IPC分类号： G01N29/00 , H01L41/047
CPC分类号： H01L41/1132 , H01L41/042
摘要： To provide a piezoelectric sensor in which a first electrode for measurement and a second electrode for reference are provided apart from each other on one surface side of a piezoelectric piece and a common electrode is provided on the other surface side so as to face the first and second electrodes, and which achieves highly reliable oscillation by reducing the influence of electrical coupling between the first electrode and the second electrode. A piezoelectric sensor includes: a first electrode for measurement and a second electrode for reference provided apart from each other on one surface side of a piezoelectric piece; a common electrode provided on the other surface side of the piezoelectric piece commonly for the first electrode and the second electrode to face the first electrode and the second electrode; and an adsorption layer formed on an area, of the common electrode, to which the first electrode is projected, to adsorb a substance to be sensed. This structure prevents the first electrode and the second electrode from being electrically coupled due to the impedance of the sample fluid.
摘要翻译：提供一种压电传感器，其中第一测量用电极和第二参考用电极在压电片的一个表面侧彼此分开设置，并且公共电极设置在另一个表面侧上以面向第一和第二电极，并且通过减少第一电极和第二电极之间的电耦合的影响来实现高度可靠的振荡。一种压电传感器包括：用于测量的第一电极和用于在压电片的一个表面侧彼此分开的第二参考电极; 在所述压电片的另一个表面侧上设置的公共电极，所述公共电极通常用于所述第一电极，所述第二电极与所述第一电极和所述第二电极相对; 以及形成在所述公共电极的与所述第一电极投影的区域上的吸附层，以吸附待感测的物质。这种结构防止了第一电极和第二电极由于样品流体的阻抗而电耦合。

18. 发明授权

US06879815B2 Apparatus for extracting a carrier frequency 有权
标题翻译：用于提取载波频率的装置
公开(公告)号：US06879815B2
公开(公告)日：2005-04-12
申请号：US10207857
申请日：2002-07-31
申请人： Manabu Nakamura , Kazuo Akaike
发明人： Manabu Nakamura , Kazuo Akaike
IPC分类号： H04L27/227 , H04B1/26 , H04B1/66 , H04B1/18
CPC分类号： H04B1/26 , H04B1/66
摘要： A frequency extractor extracts an input frequency of an input signal. The frequency extractor includes a frequency multiplier, first and second filters, a binary circuit and a frequency divider. The frequency multiplier obtains a signal of a multiplied frequency, the multiplied frequency being N times the input frequency, N being an integer greater than 1. The first filter, having a first bandwidth, filters the signal of the multiplied frequency to provide a first filtered signal. The binary circuit binarizes the first filtered signal to a binary signal. The frequency divider divides the binary signal by a factor of N to provide a divided signal. The second filter, having a second bandwidth, filters the divided signal to generate the input frequency in a form of a continuous wave, wherein the second bandwidth is about 1/N times the first bandwidth.
摘要翻译：频率提取器提取输入信号的输入频率。频率提取器包括倍频器，第一和第二滤波器，二进制电路和分频器。倍频器获得倍频信号，乘法频率为输入频率的N倍，N为大于1的整数。具有第一带宽的第一滤波器对倍频信号进行滤波，以提供第一滤波信号。二进制电路将第一个滤波信号二值化为二进制信号。分频器将二进制信号除以因子N以提供分频信号。具有第二带宽的第二滤波器对分频信号进行滤波以产生连续波形式的输入频率，其中第二带宽约为第一带宽的1/N。

19. 发明授权

US06833755B2 Modulator and demodulator 失效
公开(公告)号：US06833755B2
公开(公告)日：2004-12-21
申请号：US10611869
申请日：2003-07-03
申请人： Hirotoshi Takahashi , Kazuo Akaike
发明人： Hirotoshi Takahashi , Kazuo Akaike
IPC分类号： H03D300
CPC分类号： H03D3/007 , H03C3/40
摘要： A modulator for modulating carrier wave signals with an in-phase component signal and a quadrature component signal includes a fixed frequency signal generating means for generating two fixed-frequency signals differing 90 degrees in phase, a variable frequency signal generating means for generating a signal whose frequency can be varied according to a modulated signal to be produced, an in-phase component carrier wave signal generating means for mixing one fixed-frequency signal and the variable-frequency signal to generate a carrier wave signal for an in-phase component, a quadrature component carrier wave signal generating means for mixing the other fixed-frequency signal and the variable-frequency signal to generate a carrier wave signal for a quadrature component, an in-phase component modulating means for modulating the in-phase component carrier wave signal with the in-phase component signal, and a quadrature component modulating means for modulating the quadrature component carrier wave with the quadrature component signal. A demodulator for demodulating an in-phase component modulated signal and a quadrature component modulated signal includes a fixed frequency signal generating means for generating two fixed-frequency signals differing 90 degrees in phase, a variable frequency signal generating means for generating a signal whose frequency can be varied according to a modulated signal, an in-phase component carrier wave signal generating means for mixing one fixed-frequency signal and the variable-frequency signal to generate a carrier wave signal for an in-phase component, a quadrature component carrier wave signal generating means for mixing the other fixed-frequency signal and the variable-frequency signal to generate a carrier wave signal for a quadrature component, an in-phase component demodulating means for demodulating an in-phase component modulated signal with the in-phase component carrier wave signal to produce an in-phase component signal, and a quadrature component demodulating means for demodulating a quadrature component modulated signal with the quadrature component carrier wave signal to produce a quadrature component signal.

20. 发明授权

US06747524B2 Modulator and demodulator 失效
标题翻译：调制器和解调器
公开(公告)号：US06747524B2
公开(公告)日：2004-06-08
申请号：US10036428
申请日：2002-01-07
申请人： Hirotoshi Takahashi , Kazuo Akaike
发明人： Hirotoshi Takahashi , Kazuo Akaike
IPC分类号： H03C300
CPC分类号： H03D3/007 , H03C3/40
摘要： A modulator for modulating carrier wave signals with an in-phase component signal and a quadrature component signal includes a fixed frequency signal generator for generating two fixed-frequency signals differing 90 degrees in phase, a variable frequency signal generator for generating a signal whose frequency can be varied according to a modulated signal, in-phase and quadrature component carrier wave signal generators for mixing respective ones of the fixed-frequency signals and the variable-frequency signal to generate carrier wave signals for in-phase and quadrature components, an in-phase component modulator for modulating the in-phase component carrier wave signal with the in-phase component signal, and a quadrature component modulator for modulating the quadrature component carrier wave with the quadrature component signal. Also, a demodulator is able to demodulate an in-phase component modulated signal and a quadrature component modulated signal from the modulator.
摘要翻译：用于以同相分量信号和正交分量信号调制载波信号的调制器包括：固定频率信号发生器，用于产生相位不同于90度的两个固定频率信号;可变频率信号发生器，用于产生频率可以根据调制信号，同相和正交分量载波信号发生器来变化，用于混合固定频率信号和可变频率信号中的相应频率信号以产生用于同相和正交分量的载波信号，用于用同相分量信号调制同相分量载波信号的相位分量调制器和用正交分量信号调制正交分量载波的正交分量调制器。此外，解调器能够解调来自调制器的同相分量调制信号和正交分量调制信号。

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