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    • 5. 发明授权
    • Head actuator having reduced and controlled vibration characteristics
for high speed disk drive systems
    • 头驱动器具有降低和受控的高速磁盘驱动系统的振动特性
    • US5764441A
    • 1998-06-09
    • US636802
    • 1996-04-23
    • Keiji ArugaYasumasa KurobaTomoyoshi Yamada
    • Keiji ArugaYasumasa KurobaTomoyoshi Yamada
    • G11B21/02B81B3/00G11B21/08G11B5/55
    • G11B21/085
    • A rotary moving coil actuator in a disk drive selectively positions a read/write head with respect to disk medium. A carriage is pivotable about an axis and has a carriage arm for supporting the head. A pair of magnets, disposed in spaced relationship within a magnetic yoke structure, have spaced flat faces perpendicular to the axis and define a gap therebetween. A flat coil structure, comprising one or a pair of flat coils, is attached to the carriage and disposed at least in part within the gap between the opposing flat faces of the magnets so as to be movable along a stroke of movement relatively thereto. The flat coil structure in cooperation with the magnets, generates a driving force in a direction approximately parallel to a first line which is perpendicular to the axis and passes through the axis and toward the read/write head and thereby substantially perpendicular to the seek direction of the head.
    • 盘驱动器中的旋转运动线圈致动器相对于盘介质选择性地定位读/写头。 滑架可绕轴线转动并且具有用于支撑头部的托架臂。 在磁轭结构内以间隔关系设置的一对磁体具有垂直于该轴线的间隔开的平坦表面,并且在它们之间形成间隙。 包括一个或一对扁平线圈的扁平线圈结构被附接到托架并且至少部分地设置在磁体的相对平坦表面之间的间隙内,以便能够相对于其移动。 与磁体协调的扁平线圈结构在大致平行于垂直于轴线的第一线的方向上产生驱动力,并且通过轴线并朝向读/写头,从而基本上垂直于读取方向 头部。
    • 8. 发明授权
    • Detecting circuit for read signal from magnetic recording system using partial response
    • 使用部分响应从磁记录系统读取信号的检测电路
    • US06501610B1
    • 2002-12-31
    • US08596471
    • 1996-02-05
    • Takao SugawaraUmeo OshioTakenori OhshimaYoshifumi MizoshitaKeiji Aruga
    • Takao SugawaraUmeo OshioTakenori OhshimaYoshifumi MizoshitaKeiji Aruga
    • G11B509
    • G11B20/10055G11B5/09G11B20/10009G11B20/1258
    • A detection circuit in a magnetic recording and playback apparatus which uses partial response and the maximum likelihood method, in which neither the size of the detection circuit nor the power consumption increase when the partial response order n increases. In this detection circuit, in the circuit that detects a signal read out from a head, either a plurality of equalizers for different target equalization waveforms, or a single variable target equalizer is provided. A detector for the waveform output from an equalizer is connected in series with the detector. A plurality of combinations, each formed by an equalizer and a detector, is connected in parallel to the output of a filter, the outputs of the combinations of equalizers and detectors being input to a switching circuit, which is controlled by a switching control means. The switching control means controls the switching circuit so that just one of the combinations of equalizer and detectors is selected as the detector output. If a variable target equalizer, which is capable of generating two or more different types of equalization waveforms, is used as the equalizer, it is possible to reduce the number of equalizers to one.
    • 使用部分响应和最大似然方法的磁记录和重放装置中的检测电路,其中当部分响应顺序n增加时,检测电路的尺寸和功耗都不会增加。 在该检测电路中,在检测从头读出的信号的电路中,提供用于不同的目标均衡波形的多个均衡器或单个可变目标均衡器。 用于从均衡器输出的波形的检测器与检测器串联连接。 由均衡器和检测器形成的多个组合与滤波器的输出并联连接,均衡器和检测器组合的输出被输入到由开关控制装置控制的开关电路。 开关控制装置控制开关电路,使得仅选择均衡器和检测器的组合中的一个作为检测器输出。 如果能够产生两种或多种不同类型的均衡波形的可变目标均衡器被用作均衡器,则可以将均衡器的数量减少到1。