公开(公告)号：US09336807B1

公开(公告)日：2016-05-10

申请号：US14698587

申请日：2015-04-28

Applicant: Seagate Technology LLC

Inventor： Barmeshwar Vikramaditya ,  Patrick Korkowski

IPC: G11B21/02 ,  G11B5/596 ,  G11B5/60 ,  G11B20/18

CPC classification number: G11B5/6029 ,  G11B19/048 ,  G11B20/182

Abstract: Method and apparatus for detecting unstable read sensors (readers) for data storage systems. In some embodiments, a transducer is supported adjacent a rotating data recording medium having servo data patterns interspersed with calibration test data patterns. A read sensor of the transducer reads the servo and calibration test data patterns while the transducer is maintained at a passive fly height adjacent the medium. A corresponding location on the medium is identified for an error detected during the reading of the servo and calibration test patterns. The servo and calibration test patterns at the location are reread using the read sensor to characterize the read sensor as an unstable reader.

Abstract translation: 用于检测用于数据存储系统的不稳定读取传感器（读取器）的方法和装置。 在一些实施例中，传感器被支持在具有散布有校准测试数据模式的伺服数据模式的旋转数据记录介质附近。 传感器的读取传感器读取伺服和校准测试数据模式，同时传感器保持在与介质相邻的被动飞行高度。 识别介质上的相应位置，以便在读取伺服和校准测试图案期间检测到错误。 使用读取传感器重新读取位置的伺服和校准测试图案，以将读取的传感器表征为不稳定的读取器。