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    • 1. 发明授权
    • Method for early detection of magnetic head degradation due to carbon overcoat wear
    • 早期检测由于碳外套磨损引起的磁头退化的方法
    • US07957083B2
    • 2011-06-07
    • US11781898
    • 2007-07-23
    • Albert John WallashHong Zhu
    • Albert John WallashHong Zhu
    • G11B27/36
    • G11B27/36G11B5/3106G11B5/40G11B5/455G11B19/048G11B2220/2516Y10T428/1107
    • A method for detecting an impending failure of a disk drive system. The method includes monitoring a signal from a magnetoresistive sensor for the presence of a negative signal spike. A negative signal spike can indicate that the carbon overcoat of the magnetic medium has been locally worn off. The resulting localized absence of carbon overcoat causes the magnetoresistive sensor to short to the magnetic medium. This causes a short, abrupt drop in voltage, which can be used as evidence of the localized absence of the carbon overcoat. If such a negative signal spike is detected, the user can be notified of an impending system failure. In addition to, or in lieu of, notifying the user of the impending system failure, the system can be automatically de-activated to prevent data loss and/or further damage to the recording system.
    • 一种用于检测磁盘驱动器系统即将发生故障的方法。 该方法包括监视来自磁阻传感器的信号以存在负信号尖峰。 负信号尖峰可以指示磁性介质的碳外涂层已被局部磨损。 所得到的局部不存在碳覆盖层导致磁阻传感器短于磁介质。 这导致电压短暂的突然下降,其可以用作局部不存在碳外涂层的证据。 如果检测到这样的负信号尖峰,则可以向用户通知即将发生的系统故障。 或者代替通知用户即将发生的系统故障,系统可以被自动去激活,以防止数据丢失和/或进一步损坏记录系统。
    • 4. 发明申请
    • METHOD FOR EARLY DETECTION OF MAGNETIC HEAD DEGRADATION DUE TO CARBON OVERCOAT WEAR
    • 用于早期检测由碳过度磨损引起的磁头降解的方法
    • US20090029188A1
    • 2009-01-29
    • US11781898
    • 2007-07-23
    • Albert John WallashHong Zhu
    • Albert John WallashHong Zhu
    • G11B5/39G11B27/36
    • G11B27/36G11B5/3106G11B5/40G11B5/455G11B19/048G11B2220/2516Y10T428/1107
    • A method for detecting an impending failure of a disk drive system. The method includes monitoring a signal from a magnetoresistive sensor for the presence of a negative signal spike. A negative signal spike can indicate that the carbon overcoat of the magnetic medium has been locally worn off. The resulting localized absence of carbon overcoat causes the magnetoresistive sensor to short to the magnetic medium. This causes a short, abrupt drop in voltage, which can be used as evidence of the localized absence of the carbon overcoat. If such a negative signal spike is detected, the user can be notified of an impending system failure. In addition to, or in lieu of, notifying the user of the impending system failure, the system can be automatically de-activated to prevent data loss and/or further damage to the recording system.
    • 一种用于检测磁盘驱动器系统即将发生故障的方法。 该方法包括监视来自磁阻传感器的信号以存在负信号尖峰。 负信号尖峰可以指示磁性介质的碳外涂层已被局部磨损。 所得到的局部不存在碳覆盖层导致磁阻传感器短于磁介质。 这导致电压短暂的突然下降,其可以用作局部不存在碳外涂层的证据。 如果检测到这样的负信号尖峰,则可以向用户通知即将发生的系统故障。 或者代替通知用户即将发生的系统故障,系统可以被自动去激活,以防止数据丢失和/或进一步损坏记录系统。