公开(公告)号：US09053729B1

公开(公告)日：2015-06-09

申请号：US14338485

申请日：2014-07-23

Applicant: SEAGATE TECHNOLOGY LLC

Inventor： Vijay Kumar ,  Ravishankar A. Shivarama

IPC: G11B21/02 ,  G11B27/36 ,  G11B5/60 ,  G11B5/54

CPC classification number: G11B5/6011 ,  G11B5/54 ,  G11B5/6058 ,  G11B5/607 ,  G11B5/6076

Abstract: Various embodiments of a method of detecting a contact event between a head and a storage medium, and a storage device that utilizes such method are disclosed. In one or more embodiments, the method includes applying an input signal to an actuator of a head of a storage device; identifying a frequency of the input signal; detecting an output signal in response to the input signal; and detecting a contact event between the head and a storage medium of the storage device if the output signal includes an even harmonic frequency and an odd harmonic frequency of the frequency of the input signal.

Abstract translation: 公开了检测头与存储介质之间的接触事件的方法以及利用这种方法的存储装置的各种实施例。 在一个或多个实施例中，该方法包括将输入信号施加到存储装置的头部的致动器; 识别输入信号的频率; 响应于所述输入信号检测输出信号; 以及如果所述输出信号包括所述输入信号的频率的偶次谐波频率和奇数谐波频率，则检测所述存储设备的磁头与存储介质之间的接触事件。