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    Disk drive that performs cold writes to erased buffer
    1.
    发明授权
    Disk drive that performs cold writes to erased buffer 有权
    对擦除缓冲区执行冷写操作的磁盘驱动器

    公开(公告)号：US07184241B1

    公开(公告)日：2007-02-27

    申请号：US11157587

    申请日：2005-06-21

    申请人： Michael Mallary ,  Yan Wu ,  John VanLaanen ,  Bruce Buch ,  Jeffrey V DeRosa

    发明人： Michael Mallary ,  Yan Wu ,  John VanLaanen ,  Bruce Buch ,  Jeffrey V DeRosa

    IPC分类号： G11B5/596 ,  G11B5/02 ,  G11B15/18

    CPC分类号： G11B5/024 ,  G11B5/40

    摘要： A disk drive includes a rotatable data storage disk, a transducer, an actuator, and a controller. The transducer is configured to read and write data on the disk. The actuator is configured to position the transducer relative to defined portions of the disk. The controller is configured to write a predetermined magnetic polarity pattern on a buffer portion of the disk to erase data thereon. The controller also determines whether the disk drive has reached a threshold operating temperature, and to selectively direct data from a host device, which is addressed for an associated original block address on the disk, to be written to the buffer portion of the disk when the disk drive has not reached the threshold operating temperature. The controller later copies the data from the buffer portion of the disk to the original block address on the disk and then erases the data from the buffer portion of the disk.

    摘要翻译： 磁盘驱动器包括可旋转数据存储盘，换能器，致动器和控制器。 传感器配置为在磁盘上读取和写入数据。 致动器被配置成相对于盘的限定部分定位换能器。 控制器被配置为在盘的缓冲部分上写入预定的磁极性图案以在其上擦除数据。 控制器还确定磁盘驱动器是否已经达到阈值工作温度，并选择性地将来自主机设备的数据（其被寻址用于磁盘上相关联的原始块地址）写入到盘的缓冲部分中 磁盘驱动器尚未达到阈值工作温度。 控制器稍后将数据从磁盘的缓冲部分复制到磁盘上的原始块地址，然后从磁盘的缓冲区擦除数据。

    Disk drive including slider mover having low thermal coefficient of resistivity
    2.
    发明授权
    Disk drive including slider mover having low thermal coefficient of resistivity 有权
    包括具有低电阻热系数的滑动推动器的磁盘驱动器

    公开(公告)号：US07403356B1

    公开(公告)日：2008-07-22

    申请号：US11116730

    申请日：2005-04-28

    申请人： Michael Mallary ,  Yan Wu

    发明人： Michael Mallary ,  Yan Wu

    IPC分类号： G11B17/32

    CPC分类号： G11B5/582 ,  G11B5/3133 ,  G11B5/6064 ,  G11B5/607

    摘要： A disk drive includes a drive housing, a storage disk and a slider. The slider includes a head that magnetically interacts with the storage disk. Further, the slider includes a slider mover that moves a portion of the slider to adjust a head-to-disk spacing during operation of the disk drive. In one embodiment, the slider mover is formed from a material having a thermal coefficient of resistivity that is less than approximately 0.001/° C., such as a copper-manganese alloy, a copper-tin alloy or a gold alloy. The slider mover can be formed from a material having a negative thermal coefficient of resistivity. Further, the slider mover can be formed from a material having a resistivity that is less than approximately 15 microohm-centimeters. Additionally, the slider mover can be formed from a material having a melting point that is greater than approximately 750° C. The disk drive can include a drive circuitry and a lead that conducts electricity between the slider mover and the drive circuitry. The lead can be formed from substantially the same materials as the slider mover.

    摘要翻译： 磁盘驱动器包括驱动器壳体，存储盘和滑块。 滑块包括与存储盘磁性相互作用的磁头。 此外，滑块包括滑块移动器，其在磁盘驱动器的操作期间移动滑块的一部分以调节磁头到磁盘的间隔。 在一个实施例中，滑块移动器由具有小于约0.001 /℃的热电阻系数的材料形成，例如铜 - 锰合金，铜 - 锡合金或金合金。 滑动移动器可以由具有负热电阻系数的材料形成。 此外，滑块移动器可以由具有小于约15微欧姆厘米的电阻率的材料形成。 另外，滑块移动器可以由具有大于约750℃的熔点的材料形成。磁盘驱动器可以包括驱动电路和在滑块移动器和驱动电路之间传导电力的引线。 引线可以由与滑块移动器基本相同的材料形成。

    Writer shields with modified shapes for reduced flux shunting
    8.
    发明授权
    Writer shields with modified shapes for reduced flux shunting 有权
    作者盾牌具有改进的形状，用于减少通量分流

    公开(公告)号：US08542461B2

    公开(公告)日：2013-09-24

    申请号：US12806803

    申请日：2010-08-20

    申请人： Zhigang Bai ,  Moris Dovek ,  Yan Wu

    发明人： Zhigang Bai ,  Moris Dovek ,  Yan Wu

    IPC分类号： G11B5/147 ,  G11B5/187

    CPC分类号： G11B5/3163 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/312 ,  G11B5/3146

    摘要： A perpendicular magnetic recording (PMR) head is fabricated with a configuration of leading edge shields and trailing edge shields that reduce the leakage of flux between the main pole and the shields. The reduction of leakage is achieved by eliminating the sharp 90° corner between the backside surfaces of the shields and the surfaces adjacent to the main pole. In one embodiment the corner is replaced by two successive acute angles, in another embodiment it is replaced by a rounded surface. In a final embodiment, leakage between the pole and trailing edge shield is achieved by shortening the length of the write gap by forming the shield with a double taper.

    摘要翻译： 垂直磁记录（PMR）头被制造成具有前缘屏蔽和后缘屏蔽的结构，其减小主极和屏蔽之间的通量泄漏。 通过消除屏蔽的背面和与主极相邻的表面之间的尖锐的90°角来实现泄漏的减少。 在一个实施例中，角部被两个连续的锐角取代，在另一个实施例中，它被圆形表面所代替。 在最终实施例中，通过用双锥形形成屏蔽来缩短写入间隙的长度来实现极和后缘屏蔽之间的泄漏。

    Back channel communication
    10.
    发明授权
    Back channel communication 有权
    后通道通信

    公开(公告)号：US08418004B2

    公开(公告)日：2013-04-09

    申请号：US13046991

    申请日：2011-03-14

    申请人： Massimo Sorbara ,  Patrick Duvaut ,  Yan Wu

    发明人： Massimo Sorbara ,  Patrick Duvaut ,  Yan Wu

    IPC分类号： G06F11/00 ,  G01R31/28 ,  H04B1/38 ,  H04B3/46

    CPC分类号： H04L12/66 ,  H04B3/32

    摘要： Various embodiments are described for back channel communication. One embodiment is a method that comprises receiving data at customer premises equipment (CPE), determining at least one error in the received data, formatting the determined error for communication to a central office (CO), and sending the formatted error to the CO via a back channel, wherein the formatted error is sent between sync frames of a discrete multitone (DMT) superframe.

    摘要翻译： 对于后向信道通信描述了各种实施例。 一个实施例是一种方法，其包括在客户驻地设备（CPE）处接收数据，确定接收到的数据中的至少一个错误，将确定的错误格式化为中心局（CO），并将格式化的错误发送到CO经由 背信道，其中格式化的错误在离散多音（DMT）超帧的同步帧之间发送。