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公开(公告)号：US20240233753A9
公开(公告)日：2024-07-11
申请号：US18132832
申请日：2023-04-10
CPC分类号： G06F3/0652 , G06F3/0604 , G06F3/0689 , G11B5/024
摘要： A method of data clearing of a hard disk comprises search a last target logic block of a target hard disk according to a predetermined sequence. Stored data in the target logic block is read for determining whether the stored data includes disk array information. The stored data of the target logic block is cleared while the stored data includes the disk array information. By accurately clearing minimum data, a data clearing process of the target hard disk is completed. By comparing with the full disk format manner, an effective of data clearing is improved. An apparatus and a computer readable storage medium applying the method are also disclosed.
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2.发明公开公开(公告)号：US20240134558A1
公开(公告)日：2024-04-25
申请号：US18132832
申请日：2023-04-09
CPC分类号： G06F3/0652 , G06F3/0604 , G06F3/0689 , G11B5/024
摘要： A method of data clearing of a hard disk comprises search a last target logic block of a target hard disk according to a predetermined sequence. Stored data in the target logic block is read for determining whether the stored data includes disk array information. The stored data of the target logic block is cleared while the stored data includes the disk array information. By accurately clearing minimum data, a data clearing process of the target hard disk is completed. By comparing with the full disk format manner, an effective of data clearing is improved. An apparatus and a computer readable storage medium applying the method are also disclosed.
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公开(公告)号：US11929104B2
公开(公告)日：2024-03-12
申请号：US17675367
申请日：2022-02-18
发明人： Lihong Zhang , Xiong Liu
CPC分类号： G11B5/024 , G11B5/09 , G11B5/5521 , G11B5/325
摘要： A recording head has a magnetic write transducer having a first crosstrack width operable to write a single track of data at a time to a magnetic disk. The recording head also has a magnetic erase transducer separate from the magnetic write transducer. The magnetic erase transducer has a second crosstrack width operable to simultaneously erase multiple tracks of data from the magnetic disk.
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公开(公告)号：US20230267952A1
公开(公告)日：2023-08-24
申请号：US17675367
申请日：2022-02-18
发明人： Lihong Zhang , Xiong Liu
CPC分类号： G11B5/024 , G11B5/09 , G11B5/5521 , G11B5/325
摘要： A recording head has a magnetic write transducer having a first crosstrack width operable to write a single track of data at a time to a magnetic disk. The recording head also has a magnetic erase transducer separate from the magnetic write transducer. The magnetic erase transducer has a second crosstrack width operable to simultaneously erase multiple tracks of data at from the magnetic disk
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公开(公告)号：US20190147906A1
公开(公告)日：2019-05-16
申请号：US15552269
申请日：2017-06-21
发明人： Roy Spiller
IPC分类号： G11B5/008
CPC分类号： G11B5/00813 , G11B5/024 , G11B5/127 , G11B5/187 , G11B5/325
摘要： The present invention provides a magnetic head for erasing data on a magnetic tape, the magnetic head comprising a body having an elongate magnet mounted thereon, and a plurality of magnetisable portions in magnetisable communication with the magnet, the plurality of magnetisable portions being aligned with the elongate magnet and forming at least a portion of a substantially planar external surface of the magnetic head. The present invention further provides a method and system for erasing data on a magnetic tape using said magnetic head
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公开(公告)号：US09984078B2
公开(公告)日：2018-05-29
申请号：US15681652
申请日：2017-08-21
发明人： Masayuki Iwanaga , Yumiko Ohta , Yutaka Oishi
CPC分类号： G06F17/30076 , G11B5/00813 , G11B5/024
摘要： A method for writing a file from an application of a host onto a tape includes sequentially receiving records forming the file from the application, adding a predetermined number of segments of dummy data (dummy records) subsequently to the plurality of records forming the file such that the records of the file and records of a subsequent file are not included in the same data set, interposing the dummy records between a final record of the file and a head record of the subsequent (next) file, to thereby construct at least one data set that is adjacent to one data set and does not include the records of the file, and writing a data set including the records of the file, a data set (dummy data set) including the final record of the file and the dummy records, and a data set including the subsequent file, onto the tape.
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公开(公告)号：US09947343B1
公开(公告)日：2018-04-17
申请号：US14318969
申请日：2014-06-30
摘要： A hard disk drive desledder comprises a support and a cutting member. The support is configured to receive and to support a hard disk drive assembly that includes a hard disk drive and a sled. The cutting member has at least two cutting edges corresponding to respective portions of the sled. The cutting member is movable from a first position spaced apart from the support and a second position adjacent the support to cause the at least two cutting edges to cut portions of the sled to allow the hard disk drive to be removed from the hard disk drive assembly. Related desledding methods are also described.
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公开(公告)号：US09916868B1
公开(公告)日：2018-03-13
申请号：US15229967
申请日：2016-08-05
发明人： Kangkang Wang , Xiaobin Zhu , Ganping Ju , Kai Chieh Chang , Yingguo Peng , Timothy J. Klemmer , Jan-Ulrich Thiele , Pin-Wei Huang
IPC分类号： G11B27/36 , G11B7/1263 , G11B5/024 , G11B5/09 , G11B7/1267 , G11B5/00
CPC分类号： G11B27/36 , G01R33/0325 , G11B5/024 , G11B5/09 , G11B5/4555 , G11B7/1263 , G11B7/1267 , G11B2005/0021
摘要： An apparatus comprises a spindle to rotate a magnetic recording medium and a magnetic field generator to expose a track of the medium to a DC magnetic field. The magnetic field generator is configured to saturate the track during an erase mode and reverse the DC magnetic field impinging the track during a writing mode. A laser arrangement heats the track during the erase mode and, during the writing mode, heats the track while the track is exposed to the reversed DC magnetic field so as to write a magnetic pattern thereon. A reader reads the magnetic pattern and generates a read signal. A processor is coupled to the reader and configured to determine an anisotropy parameter using the read signal. The apparatus can further comprise a Kerr sensor that generates a Kerr signal using the magnetic pattern.
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公开(公告)号：US09858963B2
公开(公告)日：2018-01-02
申请号：US15450776
申请日：2017-03-06
发明人： Kazunori Sekido
CPC分类号： G11B20/1217 , G11B5/012 , G11B5/024 , G11B5/09 , G11B20/1803 , G11B27/329 , G11B2020/1238
摘要： In an embodiment, a storage device includes a shingled magnetic recording device, a management unit, selection unit, and execution unit. The shingled magnetic recording device performs writing in unit of a band including tracks being adjacent to and partially overlapping with each other. The management unit manages management information mutually associating band identifier of the band, characteristic information indicating a possibility that data stored in the band is not referred to, and data identifier of the data in a case where the data is stored in the band. The selection unit selects the band of the shingled magnetic recording device storing the data based on the data and the characteristic information in a case where the shingled magnetic recording device is requested to store the data. The execution unit stores the data to the selected band.
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公开(公告)号：US09412410B1
公开(公告)日：2016-08-09
申请号：US14946580
申请日：2015-11-19
CPC分类号： G11B20/10388 , G11B5/00826 , G11B5/024 , G11B20/1833 , G11B2020/1853
摘要： In one embodiment, a tape drive includes a magnetic head having a plurality of read sensors, each read sensor being configured to read data simultaneously, a controller, and logic integrated with and/or executable by the controller. The logic is configured to read, using the plurality of read sensors, encoded data from a plurality of tracks of a magnetic tape medium simultaneously. The logic is also configured to perform track-dependent erasure decoding on the encoded data based on detection of one or more time-varying signal quality issues associated with at least one of the plurality of tracks read simultaneously from the magnetic tape medium.
摘要翻译： 在一个实施例中，磁带驱动器包括具有多个读取传感器的磁头，每个读取传感器被配置为同时读取数据，控制器以及与控制器集成和/或可执行的逻辑。 该逻辑被配置为同时从多个磁带介质的多个磁道读取使用多个读取传感器的编码数据。 该逻辑还被配置为基于与从磁带介质同时读取的多个磁道中的至少一个轨道相关联的一个或多个时变信号质量问题的检测，对编码数据执行与磁道相关的擦除解码。
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