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1. 发明授权

EP2131205B1 MAGNETIC SENSOR AND ITS SENSITIVITY MEASURING METHOD 有权
标题翻译：磁性传感器及其灵敏度测量方法
公开(公告)号：EP2131205B1
公开(公告)日：2018-05-02
申请号：EP08722634.6
申请日：2008-03-21
申请人： Asahi Kasei EMD Corporation
发明人： YAMASHITA, Masaya , YAMAGATA, Yo
IPC分类号： G01R33/07 , G01R33/02 , G01R35/00
CPC分类号： G01R33/07 , G01R33/0206 , G01R35/005
摘要： The present invention relates to a magnetic sensor with a sensitivity measuring function and a sensitivity measuring device and a method thereof having a magnetic substance on a semiconductor substrate provided with a plurality of Hall elements. Magnetic sensitivity surfaces (31) detect flux density, and a switching unit (32) extracts magnetic field intensity information of each axis, and inputs it to a sensitivity calculating unit (34) via an amplifier unit (33). The sensitivity calculating unit (34) calculates the sensitivity from the magnetic field intensity information about the individual axes from the magnetic sensitivity surfaces (31). The sensitivity calculating unit includes an axial component analyzing unit (34a) for analyzing the flux density from the magnetic sensitivity surfaces (31) into magnetic components of the individual axes; a sensitivity decision unit (34b) for deciding the sensitivity by comparing the individual axial components of the magnetic field intensity from the axial component analyzing unit (34a) with a reference value; and a sensitivity correction unit (34c) for carrying out sensitivity correction in accordance with the sensitivity information from the sensitivity decision unit (34b). A sensor diagnostic unit (39) carries out self-diagnosis of the validity of the sensitivity of the magnetic sensor according to the sensitivity information, and performs self-sensitivity correction (adjustment).

3. 发明授权

EP1519148B1 AZIMUTH MEASURING DEVICE AND AZIMUTH MEASURING METHOD 有权
标题翻译：方位测量装置和方位测量方法
公开(公告)号：EP1519148B1
公开(公告)日：2014-08-06
申请号：EP03738595.2
申请日：2003-06-30
申请人： Asahi Kasei EMD Corporation
发明人： HIKIDA, Koichi , YAMASHITA, Masaya
IPC分类号： G01C17/28 , G01C17/38
CPC分类号： G01C17/28 , G01C17/38

4. 发明公开

EP2482447A1 Voltage controlled oscillator 审中-公开
标题翻译： Spannungsgesteuerter Oszillator
公开(公告)号：EP2482447A1
公开(公告)日：2012-08-01
申请号：EP12158799.2
申请日：2006-11-29
申请人： Asahi Kasei EMD Corporation
发明人： Yamamoto, Tomoaki
IPC分类号： H03B5/32 , H03B5/36
CPC分类号： H03B5/366 , H03B2200/0092 , H03C3/08
摘要： The present invention provides a voltage controlled oscillator having a wide frequency variation range and an oscillation frequency that shows favorable linearity with respect to control voltage. The present invention includes an amplifier circuit 21, a piezoelectric element 22 connected in parallel to the amplifier circuit 21 and forming a feedback loop, variable capacitive elements 24 and 25 respectively connected to an input terminal and an output terminal of the amplifier circuit 21 and having a capacitance value that is dependent on control voltage, and an analog operation circuit 26 that generates a control voltage Vcs based on an inputted control voltage Vc. In this arrangement, the control voltage Vc is applied to the variable capacitive element 24 and the control voltage Vcs generated by the analog operation circuit 26 is applied to the variable capacitive element 25.
摘要翻译：本发明提供了一种具有宽的频率变化范围和相对于控制电压具有良好线性度的振荡频率的压控振荡器。本发明包括放大器电路21，与放大器电路21并联连接并形成反馈回路的压电元件22，分别连接到放大器电路21的输入端子和输出端子的可变电容元件24和25，并具有取决于控制电压的电容值，以及基于输入的控制电压Vc产生控制电压Vcs的模拟运算电路26。在这种布置中，控制电压Vc被施加到可变电容元件24，并且由模拟运算电路26产生的控制电压Vcs被施加到可变电容元件25。

5. 发明公开

EP1607849A3 Key sheet for pointing device and pointing device 审中-公开
标题翻译：指点设备和定位设备键盘
公开(公告)号：EP1607849A3
公开(公告)日：2012-01-25
申请号：EP05011431.3
申请日：2005-05-27
申请人： Asahi Kasei EMD Corporation , POLYMATECH CO., LTD.
发明人： Takatsuka, Toshinori , Honmatsu, Yoshifumi
IPC分类号： G06F3/033
CPC分类号： G06F3/0338
摘要： Provided is a pointing device (10) that can be reduced in thickness even if a magnetic field sensor (5) is mounted to a front face of a printed circuit board (p). When a support portion (13a, 21a, 22f) laterally moves, a reverse face of a flexible portion is displaced while being guided away from the printed circuit board due to deformation of a mountain fold flexure portion (13i) as a directional deformation portion (13i, 22c). Therefore, a clearance between the reverse face of the flexible portion (13b, 22a) and the printed circuit board (P) increases, and the magnetic field sensor (5) can be mounted to the front face of the printed circuit board (P), thereby making it possible to reduce thickness of the pointing device (10). At the same time, the flexible portion (13b, 22a) would not be ruptured through sliding contact with the magnetic field sensor (5).

6. 发明授权

EP1615430B1 AUTOMATIC GAIN CONTROL CIRCUIT 有权
标题翻译：自动增益控制电路
公开(公告)号：EP1615430B1
公开(公告)日：2011-08-10
申请号：EP04726023.7
申请日：2004-04-06
申请人： Asahi Kasei EMD Corporation
发明人： SASAHARA, Hideaki , UKAJI, Nobuyoshi , ISHIHARA, Ken
IPC分类号： H04N5/52
CPC分类号： H04N5/52 , H03M1/183
摘要： An AGC control section (110) has a first operation mode for controlling the gain of a variable gain amplifier (103) so that the amplitude of a synchronization signal measured by a synchronization signal amplitude measurement circuit (108) is maintained constant and a second operation mode not increasing the gain even if the amplitude of the synchronization signal measured by a video signal processing circuit (109) is smaller than a predetermined first reference value and reducing the gain of the variable gain amplifier (103) only when the video signal amplitude has become greater than a predetermined second reference value. Here, when the synchronization signal amplitude is smaller than the predetermined first reference value and the video signal amplitude is greater than the predetermined second reference value while the AGC control section (110) is operating in the first operation mode, the mode is switched to the second operation mode. On the other hand, when the synchronization signal amplitude has become smaller than the predetermined first value while the AGC control section (110) is operating in the second operation mode, the mode is switched from the second operation mode to the first operation mode.

7. 发明公开

EP2200172A1 MOTOR CONTROL CIRCUIT, MOTOR SYSTEM, AND MOTOR CONTROL METHOD 审中-公开
标题翻译： MOTORSTEUERUNGSSCHALTUNG，MOTORSTEUERUNGSVERFAHREN
公开(公告)号：EP2200172A1
公开(公告)日：2010-06-23
申请号：EP09718472.5
申请日：2009-02-19
申请人： Asahi Kasei EMD Corporation
发明人： FUKUSHIMA, Takashi
IPC分类号： H02P6/24 , H02P3/18
CPC分类号： H02P6/24 , H02P3/18
摘要： In a motor control circuit which controls energization of a coil on the basis of a detection result of a rotor position, the control is performed so that the continuous rotation of the rotor due to its own inertia is suppressed and stopped in a short time, and that the reverse rotation of the rotor is prevented. When an external control signal CTL is changed from L to H, the normal rotation control is switched to reverse rotation control, so that a reverse brake state is effected. When motor rotation speed is monitored and reduced to a set rotation speed, a brake control signal SPSB is changed from L to H, so that a short brake state is effected. However, the motor continues to be rotated by its own inertia, and a position detection signal HALL is changed. Thus, reverse brake control is temporarily performed (only during a time period corresponding to a pulse width T RB ). The short pulse reverse brake control is intermittently performed until the motor is completely stopped. Therefore, it is possible to stop the motor in a shorter time as compared with the case where the motor is stopped only by the short brake control after the motor is decelerated to a rotation speed immediately before being stopped.
摘要翻译：在基于转子位置的检测结果来控制线圈通电的电动机控制电路中，进行控制，使得转子在其自身惯性下的连续旋转在短时间内被抑制和停止，并且防止了转子的反转。当外部控制信号CTL从L变为H时，正常旋转控制切换到反向旋转控制，从而实现反向制动状态。当电机转速被监测并降低到设定的转速时，制动控制信号SPSB从L变为H，从而实现短的制动状态。然而，马达继续通过其惯性旋转，并且改变位置检测信号HALL。因此，暂时执行反向制动控制（仅在对应于脉冲宽度T RB的时间段内）。间歇地执行短脉冲逆向制动控制，直到电机完全停止。因此，与马达在停止后马达减速到转速之后的马达仅通过短路制动控制的情况相比，可以在更短的时间内停止马达。

8. 发明公开

EP2110639A1 SPATIAL INFORMATION DETECTING SYSTEM, ITS DETECTING METHOD, AND SPATIAL INFORMATION DETECTING DEVICE 审中-公开
标题翻译： SYSTEM FOR空间信息检测方法的查看客房信息的检测机构的检测和设备
公开(公告)号：EP2110639A1
公开(公告)日：2009-10-21
申请号：EP08711031.8
申请日：2008-02-08
申请人： Asahi Kasei EMD Corporation
发明人： NAKAMURA, Takenobu , YAMASHITA, Masaya
IPC分类号： G01B7/00 , G01B7/30
CPC分类号： G01B7/003 , G01D5/145
摘要： The present invention relates to a spatial information detecting system that can conduct continuous measurement using an alternating magnetic field, and that has a high degree of freedom of frequency settings and a simple configuration. A magnetic sensor driving unit (23) drives a magnetic sensor (21) via a multiplexer unit (22). Signals of the magnetic sensor are converted from analog signals to digital signals, and are transmitted from a data transmitting unit (26) to an arithmetic unit (3) as magnetic data. A Fourier transform unit (32) calculates the amplitudes and phases of a plurality of frequency components of individual axes from the output signal of the magnetic data receiving unit (31). A magnetic field vector calculating unit (33) calculates signs of the amplitudes of the individual axes from phase relationships between the plurality of frequency components on the individual axes from the output signal from the Fourier transform unit (32), and calculates the magnetic field vector representing the direction and magnitude of the magnetic field from the signs and amplitudes. A direction calculating unit (34) calculates the direction of the information terminal (2).
摘要翻译：本发明涉及一种空间信息检测系统确实可以进行使用简单的交变磁场连续测量，并做具有高度的频率设置和配置自由度。一种磁传感器驱动部（23）驱动经由多路复用单元（22）的磁传感器（21）。磁传感器的信号从模拟信号作为磁数据转换成数字信号，和为反式mitted从数据发送单元（26），以在计算单元（3）。傅立叶变换单元（32）计算接收单元（31）从所述磁数据的输出信号各轴的频率分量的多个振幅和相位。磁场矢量算出部（33）计算从来自输出信号的各轴从傅立叶变换单元（32）的频率分量的多元性之间的相位关系的各轴的振幅的符号，并且计算磁场矢量表示从符号和振幅的方向和磁场的幅度。 A方向计算单元（34）计算的信息终端（2）的方向。

9. 发明公开

EP2006700A9 MAGNETIC SENSOR AND METHOD FOR FABRICATING THE SAME 有权
标题翻译：磁传感器及其制造方法
公开(公告)号：EP2006700A9
公开(公告)日：2009-07-29
申请号：EP07740148.7
申请日：2007-03-28
申请人： Asahi Kasei EMD Corporation
发明人： KATAOKA, Makoto , KAKUTA, Katsumi , YAMAGATA, Yo , KANAYAMA, Yuichi
IPC分类号： G01R33/07 , H01L43/06
CPC分类号： G01R33/07 , G01R33/0011 , H01L27/22 , H01L43/06
摘要： The present invention relates to a magnetic sensor with which magnetic characteristics are made extremely stable by consideration of an area of contact of a base layer of a magnetic substance and a semiconductor substrate. On a semiconductor substrate (111) a plurality of Hall elements (112a, 112b) are embedded so as to be coplanar to a top surface of the semiconductor substrate while being mutually spaced apart by a predetermined distance, and above the Hall elements and the semiconductor substrate, a base layer (114), having coefficient of thermal expansion differing from that of the Hall elements and partially covers a region of each Hall elements, is formed via a protective layer (113), and a magnetic flux concentrator (115), having an area larger than the base layer and with magnetic amplification, is formed on the base layer. An area of contact of the base layer of the magnetic substance and the semiconductor substrate is made small to lessen the generation of an offset voltage.
摘要翻译：本发明涉及考虑到磁性体的基底层与半导体基板的接触面积而使磁特性极其稳定的磁性传感器。在半导体衬底（111）上，多个霍尔元件（112a，112b）被嵌入，以便与半导体衬底的顶面共面，同时彼此间隔开预定的距离，并且在霍尔元件和半导体衬底，通过保护层（113）和磁通量集中器（115）形成热膨胀系数不同于霍尔元件的热膨胀系数并部分地覆盖每个霍尔元件的区域的基层（114）具有大于基极层并具有磁放大的面积的基极层形成在基极层上。减小磁性物质基层与半导体衬底的接触面积以减小偏移电压的产生。

10. 发明公开

EP2058944A1 TRANSCONDUCTANCE AMPLIFIER 有权
标题翻译： TRANSKONDUKTANZVERSTÄRKER
公开(公告)号：EP2058944A1
公开(公告)日：2009-05-13
申请号：EP07792993.3
申请日：2007-08-27
申请人： Asahi Kasei EMD Corporation
发明人： AIBA, Yusuke
IPC分类号： H03G3/10 , H03F3/34 , H03F3/45
CPC分类号： H03G1/0029 , H03F1/3211 , H03F3/45179 , H03F3/45183 , H03F3/45188 , H03F2203/45052 , H03F2203/45066 , H03F2203/45101 , H03F2203/45292 , H03F2203/45356 , H03F2203/45394 , H03F2203/45481 , H03F2203/45586 , H03G1/0023 , H03G1/04
摘要： Provided is a transconductance amplifier capable of suppressing variation in the range of a linear relationship between an input voltage and an output current depending on the magnitude of a tuning voltage Vctrl, thereby adjusting transconductance over a wider range of operating input voltages. The transconductance amplifier is configured by a differential pair formed of MOS transistors (111, 112) having a common source, MOS transistors (113, 114), amplifiers (106, 107), a voltage generator circuit (100), and a differential-pair input voltage generator circuit (120). An input differential common voltage Vcm of all differential signals inputted to the differential pair is adjusted so that a difference between Vcm and Vctrl is equal to a constant, in accordance with a change in the tuning voltage Vctrl that controls the transconductance. This enables keeping constant the range in which the transconductance amplifier can achieve good linearity.
摘要翻译：提供了能够根据调谐电压Vctr1的大小来抑制输入电压和输出电流之间的线性关系的范围的变化的跨导放大器，由此在更宽的工作输入电压范围内调节跨导。跨导放大器由具有公共源的MOS晶体管（111,112），MOS晶体管（113,114），放大器（106,107），电压发生器电路（100）和差分放大器构成的差分对构成，对输入电压发生器电路（120）。根据控制跨导的调谐电压Vctrl的变化，调整输入到差分对的所有差分信号的输入差分公共电压Vcm，使得Vcm和Vctr1之间的差等于常数。这使得跨导放大器可以实现良好线性度的范围保持恒定。

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