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    • 1. 发明申请
    • Sound Generating Apparatus
    • 发声装置
    • US20080037820A1
    • 2008-02-14
    • US11791522
    • 2005-11-24
    • Keiji Koga
    • Keiji Koga
    • H04R1/00
    • H04R5/023
    • An object of the invention is to provide a sound generating apparatus which reproduces sound, such as music or voice, from a sound generating member, such as a flower or a tree. A sound generating apparatus 10 includes a vibration unit 11 and a drive unit 14. The vibration unit 11 includes a vibration member 12 to be attached to a sound generating member 1 and a solenoid coil 13 wound around the vibration member 12. The drive unit 14 includes a magnet 15 and a bottom part 17b, a trunk part 17a, and a top part 17c. The magnet 15 is provided at one end with respect to the axial direction of the core member, and opposes one lateral face of the solenoid coil. The bottom part 17b is provided so as to oppose the vibration member 12 with interposing the magnet 15 between the bottom part 17b and the vibration member 12, the trunk part 17a is in the form of a cylinder, extending from the outer part of the bottom part 17b so that the trunk part 17a covers the outer peripheries of the vibration unit 11 and the magnet 15. The top part 17c extends from an end of the trunk part 17a in the direction of the diameter so as to oppose the second lateral face of the solenoid coil 13.
    • 本发明的目的是提供一种从诸如花或树之类的声音产生部件再现诸如音乐或声音的声音的声音产生装置。 发声装置10包括振动单元11和驱动单元14。 振动单元11包括附接到声音发生构件1的振动构件12和缠绕在振动构件12上的螺线管线圈13。 驱动单元14包括磁体15和底部17b,主体部分17a和顶部部分17c。 磁体15相对于芯构件的轴向设置在一端,并与电磁线圈的一个侧面相对。 底部17b设置成与底部17b和振动部件12之间插入磁体15而与振动部件12相对,主体部分17a为圆筒状,从外侧部分 使得主体部分17a覆盖振动单元11的外周和磁体15。 顶部17c从主体部分17a的端部沿着直径方向延伸,以与电磁线圈13的第二侧面相对。
    • 2. 发明申请
    • Magnetic storage cell and magnetic memory device
    • 磁存储单元和磁存储器件
    • US20060279980A1
    • 2006-12-14
    • US10568808
    • 2004-08-18
    • Susumu HarataniKeiji KogaJoichiro Ezaki
    • Susumu HarataniKeiji KogaJoichiro Ezaki
    • G11C11/00
    • H01L27/224G11C11/16H01L43/08
    • To provide a magnetic memory cell that is capable of efficiently changing the magnetization directions of magneto-sensitive layers. A magnetic memory cell comprises an annular magnetic layer 4a through which extends a write bit line 5a that generates a magnetic field, and a TMR film S20a configured so as to include: a first magneto-sensitive layer 14a, a magnetization direction of which is changed by the magnetic field in the annular magnetic layer 4a; and a magnetoresistive effect revealing body 20a disposed on a surface of the first magneto-sensitive layer 14a so that an electric current flows in a direction perpendicular to a laminating surface of the laminate, and the first magneto-sensitive layer 14a has a thickness thereof set in a range of not less than 0.5 nm to not more than 40 nm.
    • 提供能够有效地改变感磁层的磁化方向的磁存储单元。 磁存储单元包括环形磁性层4a,通过该环形磁性层延伸产生磁场的写入位线5a;以及TMR膜S 20a,被配置为包括:第一磁敏层14a,磁化 其方向由环形磁性层4a中的磁场改变; 以及设置在第一感应层14a的表面上的电磁效应显示体20a,使得电流在垂直于层叠体的层叠表面的方向上流动,并且第一磁敏层14具有 其厚度设定在不小于0.5nm至不大于40nm的范围内。
    • 6. 发明授权
    • Mixer and frequency converting apparatus
    • 混频器和变频装置
    • US07991377B2
    • 2011-08-02
    • US12391440
    • 2009-02-24
    • Yuji KakinumaKeiji Koga
    • Yuji KakinumaKeiji Koga
    • H04B1/26
    • H03D7/00
    • A mixer includes: a magnetoresistive effect element including a fixed magnetic layer, a free magnetic layer, and a nonmagnetic spacer layer disposed between the fixed magnetic layer and the free magnetic layer; and a magnetic field applying unit that applies a magnetic field to the free magnetic layer. The mixer is operable, when a first high-frequency signal and a second high-frequency signal as a local signal are inputted, to multiply the first high-frequency signal and the second high-frequency signal using the magnetoresistive effect element and to generate a multiplication signal. A frequency converting apparatus includes the mixer and a filter operable, when a higher frequency and a lower frequency out of frequencies of the first high-frequency signal and the second high-frequency signal are expressed as f1 and f2 respectively, to pass one out of a frequency (f1+f2) and a frequency (f1−f2) out of the multiplication signal.
    • 混频器包括:磁阻效应元件,包括固定磁性层,自由磁性层和设置在固定磁性层和自由磁性层之间的非磁性间隔层; 以及向自由磁性层施加磁场的磁场施加单元。 当输入作为本地信号的第一高频信号和第二高频信号时,混频器可操作,以使用磁阻效应元件对第一高频信号和第二高频信号进行乘法,并产生 乘法信号。 频率转换装置包括混频器和滤波器,当第一高频信号和第二高频信号的较高频率和较低频率频率分别表示为f1和f2时,可以将一个从 乘法信号中的频率(f1 + f2)和频率(f1-f2)。
    • 9. 发明授权
    • Magnetic device and frequency analyzer
    • 磁性装置和频率分析仪
    • US07808229B2
    • 2010-10-05
    • US12000171
    • 2007-12-10
    • Keiji KogaYuji Kakinuma
    • Keiji KogaYuji Kakinuma
    • G01R15/20
    • G01R23/16B82Y25/00G01R33/093H01L43/08
    • A magnetic device and a frequency analyzer are provided as those industrially utilizing a resonance phenomenon of a direction of magnetization of a magnetoresistive element. Since polarities of an alternating current i vary with time, the direction of magnetization oscillates as affected by the magnitude and frequency of the alternating current. When the frequency fF of the direction of magnetization of a free layer in the magnetoresistive element coincides with the frequency f of the alternating current flowing in the magnetoresistive element, the oscillation of the direction of magnetization resonates to increase a voltage between output terminals. A magnetic yoke applies such a magnetic field as to cause resonance, to the free layer. A direct current is used as an electric current outputted from a current control circuit and, while this direct current is swept, voltages at respective specific resonance frequencies are detected by a monitor circuit.
    • 提供了磁性装置和频率分析器,其工业上利用磁阻元件的磁化方向的共振现象。 由于交流电i的极性随时间而变化,所以磁化方向受交流电流的大小和频率的影响而振荡。 当磁阻元件中的自由层的磁化方向的频率fF与在磁阻元件中流动的交流电流的频率f一致时,磁化方向的振荡会共振以增加输出端子之间的电压。 磁轭将这种磁场施加到自由层上引起共振。 使用直流电流作为从电流控制电路输出的电流,并且当该直流电流被扫描时,各个特定共振频率的电压由监视电路检测。