公开(公告)号：US09852754B1

公开(公告)日：2017-12-26

申请号：US15281770

申请日：2016-09-30

Applicant: Seagate Technology LLC

Inventor： Richard E. Martin ,  Abhay T. Kataria ,  Dipeshkumar J. Purani ,  Richard A. Herr ,  Alexander T. Le ,  Sandeep D. Sequeira ,  LingZhi Yang ,  Ximin Shan ,  Salman Al Saif

IPC: G11B5/09 ,  G11B5/55

CPC classification number: G11B5/5547 ,  G11B5/40

Abstract: Apparatus and method for managing a data storage device during extended idle conditions of the data storage device in which host access commands are not being received or serviced. In some embodiments, upon detection of an idle condition, a control circuit identifies a selected data transducer of the data storage device and a corresponding initial radial position of the data transducer with respect to an associated rotatable data recording surface. The control circuit performs a serpentine seek operation during the idle condition to gradually advance the selected data transducer in a selected radial direction across the data recording surface beginning at the initial radial position and ending at a final radial position. The serpentine seek operation prevents the transducer from being maintained in a stationary position during the idle condition, reducing the likelihood of damage through thermal asperity contact events, lubrication disturb, wear, etc.

公开(公告)号：US09019650B1

公开(公告)日：2015-04-28

申请号：US14265576

申请日：2014-04-30

Applicant: Seagate Technology LLC

Inventor： Ximin Shan ,  Jye Kai Chang ,  Sandeep Sequeira

IPC: G11B21/02 ,  G11B5/48

CPC classification number: G11B5/48 ,  G11B5/483 ,  G11B5/5552 ,  G11B5/596

Abstract: Apparatus and method for determining a position of a writer supported by a multi-stage actuator. In some embodiments, the apparatus includes a multi-stage actuator which supports a transducer adjacent a data recording surface. The multi-stage actuator has a coarse actuator and a microactuator. The transducer includes a write element and a read element. A controller is adapted to determine a position of a write element of the transducer with respect to the data recording surface responsive to a position of a read element of the transducer and a displacement distance of the microactuator away from a neutral position.

Abstract translation: 用于确定由多级致动器支撑的写入器的位置的装置和方法。 在一些实施例中，该装置包括支撑邻近数据记录表面的换能器的多级致动器。 多级致动器具有粗致动器和微致动器。 换能器包括写元件和读元件。 控制器适于响应于换能器的读取元件的位置和微致动器远离中立位置的位移距离来确定换能器相对于数据记录表面的写入元件的位置。