会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 6. 发明授权
    • Magnetic recording disk with patterned nondata islands of alternating polarity
    • 具有交替极性的图案化非磁性岛的磁记录盘
    • US07771852B2
    • 2010-08-10
    • US11148918
    • 2005-06-09
    • Thomas R. AlbrechtZvonimir Bandic
    • Thomas R. AlbrechtZvonimir Bandic
    • G11B5/66
    • B82Y10/00G11B5/1278G11B5/59655G11B5/743G11B5/855
    • A magnetic recording disk has patterned nondata regions that are used for read/write head positioning and data synchronization. The nondata regions contain nondata islands of magnetizable material separated by nonmagnetic spaces with the nondata islands having alternating magnetization polarity in the along-the-track direction. In each nondata region, every other nondata island in the along-the track direction has the same magnetization direction, with adjacent nondata islands having antiparallel magnetization directions. The disk may be either a horizontal magnetic recording disk, wherein the antiparallel magnetization directions are in the plane of the recording layer and parallel to the along-the-track direction, or a perpendicular magnetic recording disk, wherein the antiparallel the magnetization directions are “into” and “out of” the recording layer.
    • 磁记录盘具有用于读/写头定位和数据同步的非图形区域。 非磁性区域包含由非磁性空间分离的可磁化材料的非磁性岛,其中沿着磁道方向具有交变磁化极性的非磁性岛。 在每个非数据区域中,沿轨道方向的每隔一个非数据岛具有相同的磁化方向,相邻的非数据岛具有反平行的磁化方向。 盘可以是水平磁记录盘,其中反平行磁化方向在记录层的平面中并且平行于轨道方向,或垂直磁记录盘,其中反并联的磁化方向为“ 进入“和”离开“记录层。
    • 8. 发明申请
    • Disk drive with phase-quadrature servo pattern and demodulated position error signal insensitive to timing and phase-misalignment errors
    • 具有相位正交伺服模式的磁盘驱动器和解调位置误差信号对定时和相位错位误差不敏感
    • US20060279873A1
    • 2006-12-14
    • US11148752
    • 2005-06-09
    • Zvonimir BandicMichael Moser
    • Zvonimir BandicMichael Moser
    • G11B5/596
    • G11B5/59688
    • A magnetic recording disk drive uses a phase-quadrature position-error-signal (PES) pattern and a servo signal demodulator that is insensitive to clock errors and phase-misalignment errors. The disk has angularly-spaced servo sectors, with each servo sector having radially-spaced servo tracks that contain a phase-quadrature pattern of servo blocks. A first band in each servo sector contains two generally like patterns radially-spaced in the servo track with the second pattern phase-shifted 90 degrees along-the-track from the first pattern. A second band in each servo sector is spaced along-the-track from the first band and also has two patterns like those in the first band, but with the phase shift of the second pattern being in the opposite direction to the phase shift of the second pattern in the first band. The demodulator calculates the true amplitudes of the servo signal from the measured amplitudes of the servo signals from each band to thereby remove clock errors and phase-misalignment errors.
    • 磁记录盘驱动器使用对时钟误差和相位错位误差不敏感的相位正交位置误差信号(PES)模式和伺服信号解调器。 磁盘具有角度间隔的伺服扇区,每个伺服扇区具有包含伺服块的相位正交模式的径向间隔的伺服磁道。 每个伺服扇区中的第一频带包含在伺服轨道中径向间隔的两个大致相似的模式,其中第二模式与第一模式沿着轨迹相移90度。 每个伺服扇区中的第二频带与第一频带沿着轨道间隔开,并且还具有与第一频带中的那些相似的两个模式,但是第二模式的相移与相位偏移相反 第一个乐队的第二个模式。 解调器根据来自每个频带的伺服信号的测量幅度计算伺服信号的真实振幅,从而消除时钟误差和相位误差。