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公开(公告)号：US20130003217A1
公开(公告)日：2013-01-03
申请号：US13539214
申请日：2012-06-29
申请人： Myoung Mee Kim
发明人： Myoung Mee Kim
IPC分类号： G11B5/03
CPC分类号： G11B5/6076 , G11B5/40
摘要： Method and apparatus for detecting head disk interference (HDI). In accordance with some embodiments, a bias calibration circuit is adapted to respectively bypass or amplify a head disk interference (HDI) signal output from an HDI sensor responsive to a bias voltage adjusted according to a first control signal. A detection circuit is adapted to compare a swing range of a signal output from the bias calibration circuit and a swing range of a reference signal, and to output the first control signal responsive to said comparison.
摘要翻译： 用于检测头盘干扰（HDI）的方法和装置。 根据一些实施例，偏置校准电路适于响应于根据第一控制信号调整的偏置电压来分别绕过或放大从HDI传感器输出的头盘干涉（HDI）信号。 检测电路适于比较从偏置校准电路输出的信号的摆动范围和参考信号的摆动范围，并响应于所述比较输出第一控制信号。
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公开(公告)号：US11630779B2
公开(公告)日：2023-04-18
申请号：US17528977
申请日：2021-11-17
IPC分类号： G06F12/0873 , G06F12/128 , G06F12/02
摘要： A hybrid storage device with three-level memory mapping is provided. An illustrative device comprises a primary storage device comprising a plurality of primary sub-blocks; a cache memory device comprising a plurality of cache sub-blocks implemented as a cache for the primary storage device; and a controller configured to map at least one portion of one or more primary sub-blocks of the primary storage device stored in the cache to a physical location in the cache memory device using at least one table identifying portions of the primary storage device that are cached in one or more of the cache sub-blocks of the cache memory device, wherein a size of the at least one table is independent of a capacity of the primary storage device.
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公开(公告)号：US11621857B2
公开(公告)日：2023-04-04
申请号：US17011180
申请日：2020-09-03
发明人： Dieter P. Schnabel , Francois Xavier Hannedouche , Nicholas James Dance , Ujjwal Lanjewar , John Anthony Fletcher
摘要： A method includes importing an object into a first data storage device, obtaining static metadata relating to the object, and obtaining dynamic metadata relating to the importation of the object. The static metadata and the dynamic metadata are hashed to create a block hash for the object and the importation of the object. The imported object and the block hash are stored in the first data storage device.
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公开(公告)号：US11610603B2
公开(公告)日：2023-03-21
申请号：US17301433
申请日：2021-04-02
摘要： A data storage device can have one or more rotating data media with data tracks that are radially disposed from a central spindle. The data tracks may be logically divided into multiple regions while a write strategy is generated with a region module to set a sequence of different regions for future data writes. Receipt of a data write request to the data storage media from a host can prompt the region module to classify the data write request as a sequential or random write in order to intelligently select a region to satisfy the data write request based on the write strategy to maximize data writing consistency for data associated with the data write request.
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公开(公告)号：US20230066792A1
公开(公告)日：2023-03-02
申请号：US17859408
申请日：2022-07-07
发明人： Xiong Liu , Barish Chakravarty , Lihong Zhang , Akhil Namboori , Hui Ning Tan
IPC分类号： G02B26/00
摘要： A digital microfluidic (DMF) system based on an electrowetting-on-dielectric mechanism includes a substrate, and at least one dielectric layer comprising diamond-like carbon over the substrate. The DMF system also includes a plurality of electrodes connected to the dielectric layer. A voltage source is selectively couplable to different electrodes of the plurality of electrodes.
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公开(公告)号：US20230062615A1
公开(公告)日：2023-03-02
申请号：US17409927
申请日：2021-08-24
摘要： Two or more data values are received from one or more sensors of a hard disk drive. The two or more data values are indicative of a fly height of a recording head of the hard disk drive. The two or more data values are input into a machine-learning processor during operation of the hard disk drive. A fly height of the recording head during the operation of the hard drive head is adjusted based on an output of the machine learning processor
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公开(公告)号：US11593262B1
公开(公告)日：2023-02-28
申请号：US15962993
申请日：2018-04-25
摘要： Systems and methods are disclosed for the intelligent scheduling of garbage collection operations on a solid state memory. In certain embodiments, a method may comprise initiating a garbage collection process for a solid state memory (SSM) having a multiple die architecture, determining an order of die access for the garbage collection process based on an activity table indicating a use of one or more die in the multiple die architecture, and performing the garbage collection process based on the determined order of die access. Garbage collection reads may be directed to idle die to avoid conflicts with die busy performing other operations, thereby improving system performance.
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公开(公告)号：US11587581B1
公开(公告)日：2023-02-21
申请号：US16263308
申请日：2019-01-31
发明人： Mark Gubbins , Roger L. Hipwell, Jr. , Marcus B. Mooney , Mark Ostrowski , Tong Zhao , Michael J. Hardy , Michael Christopher Kautzky , Neil Zuckerman , Declan Macken , Francis A. McGinnity
IPC分类号： G11B5/127 , G11B3/10 , G11B5/31 , G11B11/105 , G11B5/00
摘要： A near-field transducer or heat sink is formed via a first process. The near-field transducer or heat sink is transfer-printed to a read/write head via a second process.
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公开(公告)号：US20230050976A1
公开(公告)日：2023-02-16
申请号：US17401076
申请日：2021-08-12
发明人： Marc Tim JONES
摘要： The technology disclosed herein pertains to a system and method for providing the ability for a computational storage device (CSD) to understand data layout based upon automatic detection or host identification of the file system occupying a non-volatile memory express (NVMe) namespace, the method including receiving, at a CSD, a request to process a file using a computation program stored on the CSD, detecting a filesystem associated with the file within a namespace of CSD, mounting the filesystem on the CSD, interpreting a data structure associated with the file within the namespace, and reading the physical data blocks associated with the file into a computational storage memory (CSM) of the CSD.
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公开(公告)号：US11580413B2
公开(公告)日：2023-02-14
申请号：US16117432
申请日：2018-08-30
发明人： Mehmet Fatih Erden
摘要： Systems and methods for timing recovery in DNA storage systems is described. In one embodiment, the present systems and methods include generating a unique pattern of DNA bases and use the unique pattern for a phase-locked loop (PLL) field of a data layout, generating a multidimensional mapping, configuring the multidimensional mapping to include one or more prohibited sequences of DNA bases, identifying a prohibited sequence from the multidimensional mapping and use the prohibited sequence for one or more synch-mark (SM) fields of the data layout, prohibiting a User Data field from using any of the prohibited sequences of DNA bases when converting binary data to DNA bases, identifying random insertion and/or deletion of DNA bases in the User Data field, and repairing the random insertion and/or deletion of DNA bases in the User Data field.
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