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    • 6. 发明申请
    • Cross talk and EME minimizing suspension design
    • 串音和EME最大限度地减少悬架设计
    • US20050180053A1
    • 2005-08-18
    • US10781000
    • 2004-02-18
    • Moris DovekDavid Hu
    • Moris DovekDavid Hu
    • G11B5/60G11B5/48G11B21/21
    • G11B5/486G11B5/484
    • This structure and method for minimizing EME (Electromagnetic Emission) and the crosstalk between the signal lines which are used to write and read the tracks of magnetic disk drives. These signal lines are located on magnetic trace suspension assemblies which move above the magnetic disk drives. The structure and method utilize well-placed single and multiple crossovers on either or both of the lines used to read and write the tracks on magnetic disks. In addition, the structure and method utilize the parasitic capacitances between the write and read lines to couple beneficial voltages which cancel the unwanted crosstalk noise.
    • 用于最小化EME(电磁辐射)的结构和方法以及用于写入和读取磁盘驱动器的轨道的信号线之间的串扰。 这些信号线位于在磁盘驱动器上方移动的磁迹悬挂组件上。 该结构和方法在用于读取和写入磁盘上的轨道的一条或两条线上使用良好的单个和多个交叉。 此外,该结构和方法利用写入和读取线之间的寄生电容来耦合有益的电压,从而消除不需要的串扰噪声。
    • 9. 发明授权
    • Magnetic head tester using magnetic disk with pre-written servo
    • 磁头测试仪采用磁盘预写伺服
    • US07580218B2
    • 2009-08-25
    • US11217872
    • 2005-09-01
    • Lou ShrinkleDavid HuPeter CrillMatthew Yee
    • Lou ShrinkleDavid HuPeter CrillMatthew Yee
    • G11B5/596
    • G11B5/59627G11B5/455
    • A method for operating a head testing apparatus (spin stand) using a mounted hard disk that has had its servo track information pre-written in an external servo-writing apparatus rather than in the testing apparatus itself. This insures more accurate servo-track writing and renders the testing operation more efficient. The problem of repeatable runout (RRO) associated with the transfer of a disk written in one machine to another is eliminated by forming a corrected position error signal (PES) by subtracting the average offset of one or more servo sector locations previously calculated using limited bandwidth operation of the servomechanism, from the position error signal generated during full bandwidth servo operation of the apparatus.
    • 使用已经将其伺服信息信息预写在外部伺服写入装置而不是在测试装置本身中的安装的硬盘来操作头部测试装置(旋转架)的方法。 这样可以确保更准确的伺服轨迹写入,并使测试操作更有效率。 通过减去先前使用有限带宽计算的一个或多个伺服扇区位置的平均偏移量来形成校正位置误差信号(PES)来消除与将一个机器中写入的盘传输到另一个机器的可重复跳动(RRO)的问题 从设备的全带宽伺服操作期间产生的位置误差信号来操作伺服机构。