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公开(公告)号：US10290319B1
公开(公告)日：2019-05-14
申请号：US16058819
申请日：2018-08-08
Applicant: Seagate Technology LLC
Inventor： Antonia Tsoukatos , Tim Rausch , Mehmet Fatih Erden , Benjamin W Parish , Prasanna Manja Ramakrishna , Morovat Bryan Tayefeh , Sai Sian Hon , ChengYi Guo , Teck Khoon Lim , Song Wee Teo
Abstract: A method for performing a flaw scan test on a hard disk drive is disclosed. The hard disk drive includes a magnetic recording medium and spindle motor associated with a predetermined rated speed. The method includes writing a test pattern to the magnetic recording medium while operating the spindle motor at a speed greater than the predetermined rated speed. The method also includes reading the test pattern at the greater speed and detecting flaws in response to reading the test pattern.
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公开(公告)号：US10210899B1
公开(公告)日：2019-02-19
申请号：US15985430
申请日：2018-05-21
Applicant: Seagate Technology LLC
Inventor： Antonia Tsoukatos , Tim Rausch , Mehmet Fatih Erden , Benjamin W Parish , Prasanna Manja Ramakrishna , John D Reinhardt , Morovat Bryan Tayefeh
Abstract: A method for scanning for flaws on a magnetic recording medium is disclosed. The magnetic recording medium has a first set of nonconsecutive data tracks and a second set of nonconsecutive data tracks. The method includes writing a test pattern to only the first set of nonconsecutive data tracks of the magnetic recording medium, reading of the test pattern written to the first set of nonconsecutive data tracks, and identifying flaws within the first set of nonconsecutive data tracks and the second set of nonconsecutive data tracks based on the reading the test pattern.
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公开(公告)号：US20140085745A1
公开(公告)日：2014-03-27
申请号：US13627763
申请日：2012-09-26
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Kevin David Powers , Sandeep Bhushan , James J. Martin , Prasanna Manja Ramakrishna , Dale Thomas Riley , Vance Charles Kluver , Scott Howard Deits
CPC classification number: G11B5/6076 , G11B5/40 , G11B5/607
Abstract: The present application discloses a transducer head comprising a read element that reads data from a storage media and an asperity sensor that detects a dimension of an asperity on a surface of the storage media using a temperature change at the asperity sensor. The asperity may be one or both of a void in the surface of the storage media and a protrusion from the surface of the storage media.
Abstract translation: 本申请公开了一种换能器头，其包括从存储介质读取数据的读取元件和使用在凹凸传感器处的温度变化来检测存储介质的表面上的凹凸的尺寸的粗糙度传感器。 凹凸可以是存储介质的表面中的空隙和从存储介质的表面的突起中的一个或两个。
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公开(公告)号：US08681438B1
公开(公告)日：2014-03-25
申请号：US13627763
申请日：2012-09-26
Applicant: Seagate Technology LLC
Inventor： Kevin David Powers , Sandeep Bhushan , James J. Martin , Prasanna Manja Ramakrishna , Dale Thomas Riley , Vance Charles Kluver , Scott Howard Deits
IPC: G11B5/02
CPC classification number: G11B5/6076 , G11B5/40 , G11B5/607
Abstract: The present application discloses a transducer head comprising a read element that reads data from a storage media and an asperity sensor that detects a dimension of an asperity on a surface of the storage media using a temperature change at the asperity sensor. The asperity may be one or both of a void in the surface of the storage media and a protrusion from the surface of the storage media.
Abstract translation: 本申请公开了一种换能器头，其包括从存储介质读取数据的读取元件和使用在凹凸传感器处的温度变化来检测存储介质的表面上的凹凸的尺寸的粗糙度传感器。 凹凸可以是存储介质的表面中的空隙和从存储介质的表面的突起中的一个或两个。
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