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Method, apparatus, and system for implementing write head device for contact detection and spacing sensing

A technology of contact detection and writing head, applied in the direction of recording/reproducing/deleting method, manufacturing flux-sensitive magnetic head, hydrodynamic spacing of the head, etc., can solve problems that are not used to determine the spacing of the writer

Inactive Publication Date: 2016-05-04
HITACHI GLOBAL STORAGE TECH NETHERLANDS BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no technique for determining the writer-to-disk spacing

Method used

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  • Method, apparatus, and system for implementing write head device for contact detection and spacing sensing
  • Method, apparatus, and system for implementing write head device for contact detection and spacing sensing
  • Method, apparatus, and system for implementing write head device for contact detection and spacing sensing

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Embodiment Construction

[0018] In the following detailed description of embodiments of the invention, reference is made to the accompanying drawings, which illustrate example embodiments by which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the present invention.

[0019] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise. It will also be understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, integers, steps, operations, elements and / or components, but do not exclude the presence of one or more other The presence or addition of features, integers, steps, operations, e...

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PUM

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Abstract

A method, apparatus, and system are provided for implementing a write head device for writer-to-disk contact detection and spacing sensing of recording heads in hard disk drives (HDDs). A write head device, such as a spin-torque oscillator (STO), is provided between a main pole tip and a surrounding magnetic shield of the writer in the recording head. A pair of connections is provided to the magnetic shield and the main pole of the writer, and resistance of the write head device is measured to detect writer to disk spacing and contact.

Description

technical field [0001] The present invention relates generally to the field of data storage, and more particularly to a write head device for implementing writer-to-disk contact detection and gap sensing of a recording head in a hard disk drive (HDD). A method, apparatus and system for a write head device, such as a microwave assisted magnetic recording (MAMR) head. Background technique [0002] Many data processing applications require long-term data storage and often a high degree of data integrity. Often these needs are met by non-volatile data storage devices. Non-volatile storage or persistent media can be provided by a variety of devices, most commonly by direct access storage devices (DASDs), also known as hard disk drives (HDDs). [0003] Microwave-Assisted Magnetic Recording (MAMR) heads in hard disk drives (HDDs) provide improved areal density and / or improve data error rates by generating a more precisely defined magnetic footprint that is detected by the MAMR he...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B5/60G11B5/012G11B5/09G11B5/39G11B5/82
CPCG11B5/012G11B5/09G11B5/3967G11B5/6011G11B5/6029G11B5/82G11B2005/0024G11B5/6076G11B2005/0021G11B5/6005
Inventor J·康特雷拉斯S·Y·加佐恩T·S·休班克斯A·沃拉什
Owner HITACHI GLOBAL STORAGE TECH NETHERLANDS BV