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    • 3. 发明申请
    • METHOD FOR MANUFACTURING A ROTATING DEVICE
    • 制造旋转装置的方法
    • US20130025117A1
    • 2013-01-31
    • US13533669
    • 2012-06-26
    • Kenji NISHIHARAMasayuki ISHIKAWA
    • Kenji NISHIHARAMasayuki ISHIKAWA
    • G11B5/127
    • G11B19/2009H02K15/14Y10T29/49027
    • A rotating device comprises a hub on which a magnetic recording disk is to be mounted and a base rotatably supporting the hub. At least one of the base and the hub is an item of manufacture. A method for manufacturing the rotating device comprises the steps of forming the item of manufacture, immersing the formed item of manufacture in an aqueous solution, the solute of which being a surfactant and the temperature of which being higher than the melting point of heptacosane, taking out the item of manufacture from the aqueous solution and immersing the item of manufacture in a liquid that can be regarded as pure water, taking out the item of manufacture from the liquid and drying the item of manufacture, and assembling the rotating device using the dried item of manufacture.
    • 旋转装置包括其上安装磁记录盘的轮毂和可旋转地支撑轮毂的基座。 基座和轮毂中的至少一个是制造品。 一种旋转装置的制造方法,其特征在于,包括以下步骤:将形成的制品浸入水溶液中,其溶液为表面活性剂,其温度高于二十七烷的熔点, 从水溶液中取出制造物品,并将制品浸入可以被认为是纯水的液体中,从液体中取出制造物品并干燥制品,并使用干燥的装置组装旋转装置 制造项目。
    • 4. 发明申请
    • TEMPERATURE COMPENSATION METHOD FOR PIEZOELECTRIC OSCILLATOR, AND PIEZOELECTRIC OSCILLATOR
    • 压电振荡器温度补偿方法及压电振荡器
    • US20110121909A1
    • 2011-05-26
    • US12947049
    • 2010-11-16
    • Kensaku ISOHATAMasayuki ISHIKAWA
    • Kensaku ISOHATAMasayuki ISHIKAWA
    • H03B5/04
    • H03L1/026H03L1/027
    • A temperature compensation method for a piezoelectric oscillator including a piezoelectric vibrator having a frequency temperature characteristic with a hysteresis characteristic, and an oscillation circuit which oscillates the piezoelectric vibrator and outputs an oscillation signal, wherein, to a temperature compensation circuit which can calculate a quantity of temperature compensation using frequency temperature information indicating a temperature characteristic of an oscillation frequency of the piezoelectric vibrator and temperature information of the piezoelectric vibrator at the time of oscillation of the oscillation signal, the oscillation signal and the frequency temperature information are outputted, includes: calculating, as the frequency temperature information, an intermediate value between elevated-temperature frequency temperature information of the piezoelectric vibrator that is generated in the case where ambient temperature of the piezoelectric vibrator is elevated, and lowered-temperature frequency temperature information of the piezoelectric vibrator that is generated in the case where the ambient temperature is lowered.
    • 一种压电振荡器的温度补偿方法,包括具有滞后特性的频率温度特性的压电振动器和振荡所述压电振动器并输出振荡信号的振荡电路,其中,所述振荡电路能够计算出 输出表示压电振子的振荡频率的温度特性的频率温度信息的温度补偿和振荡信号振荡时的压电振动器的温度信息,振荡信号和频率温度信息,包括: 作为频率温度信息,在压电振动器的环境温度升高的情况下产生的压电振动器的高温频率温度信息之间的中间值, 以及在环境温度降低的情况下产生的压电振动器的降温温度信息。
    • 5. 发明申请
    • PIEZOELECTRIC OSCILLATOR
    • 压电振荡器
    • US20090121799A1
    • 2009-05-14
    • US12268490
    • 2008-11-11
    • Masayuki ISHIKAWA
    • Masayuki ISHIKAWA
    • H03B5/36
    • H03B5/366
    • A piezoelectric oscillator includes: a piezoelectric resonator; an oscillation circuit including a variable resistance circuit and a transistor for oscillation; a constant current circuit, the constant current circuit including a first current mirror circuit, and a current control circuit having an output terminal and controlling a current flowing in the first current circuit so as to enable an output current of the constant current circuit to be adjusted, the output terminal of the first current mirror circuit being coupled to at least one of a collector and a base of the transistor for oscillation with the variable resistance circuit; and a control circuit coupled to the current control circuit and the variable resistance circuit, the control circuit controlling the current control circuit and a resistance value of the variable resistance circuit.
    • 压电振荡器包括:压电谐振器; 包括可变电阻电路和用于振荡的晶体管的振荡电路; 恒流电路,包括第一电流镜电路的恒流电路和具有输出端子的电流控制电路,并且控制在第一电流电路中流动的电流,以使得能够调节恒流电路的输出电流 所述第一电流镜电路的输出端子与所述晶体管的集电极和基极中的至少一个耦合,用于与所述可变电阻电路振荡; 以及耦合到电流控制电路和可变电阻电路的控制电路,控制电流控制电路的控制电路和可变电阻电路的电阻值。