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公开(公告)号：US20200004431A1
公开(公告)日：2020-01-02
申请号：US16025598
申请日：2018-07-02
Applicant: Seagate Technology LLC
Inventor： Lim Choo Chiang , Ooi Eng Kuan , Chng Yong Peng , HanSing Ling
IPC: G06F3/06 , G06F12/0802
Abstract: A data storage device includes a first memory section with a reserved area having stored therein an event trigger log that includes a history of past logged events. The data storage device also includes a second memory section separate from the first memory section. The data storage further includes a controller that, upon power up of the data storage device and before the data storage device is ready to receive host commands, allocates a buffer in the second memory section for capturing new events. The controller postpones linking of any captured new events with the past logged events until at least after the data storage device is ready to receive the host commands.
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公开(公告)号：US10514864B2
公开(公告)日：2019-12-24
申请号：US15661079
申请日：2017-07-27
Applicant: Seagate Technology LLC
Inventor： Earl T. Cohen , Timothy L. Canepa
IPC: G06F12/1027 , G06F3/06 , G06F12/00
Abstract: Methods, systems and computer-readable storage media for receiving, via an external interface of a storage device, a command from a computing host, the command including at least one non-standard command modifier, executing the command according to a particular non-standard command modifier, storing an indication of the particular non-standard command modifier in an entry of a map associated with a logical block address of the command, and storing a shadow copy of the map in a memory of the computing host.
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公开(公告)号：US20190385694A1
公开(公告)日：2019-12-19
申请号：US16552422
申请日：2019-08-27
Applicant: Seagate Technology LLC
Inventor： Zhengang Chen , David Patmore , Yingji Ju , Erich F. Haratsch
Abstract: An apparatus includes a memory and a controller. The memory may be configured to store data. The controller may be configured to process a plurality of input/output requests to a plurality of blocks of the memory that are not marked as bad on a block list, perform a code rate test that programs the plurality of blocks of the memory at three or more code rates of an error correction code scheme, and mark any of the plurality of blocks identified as bad during the code rate test on the block list.
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公开(公告)号：US20190385640A1
公开(公告)日：2019-12-19
申请号：US16556501
申请日：2019-08-30
Applicant: SEAGATE TECHNOLOGY LLC
Inventor： Timothy Francis ELLIS , Gary Ernest HILLUKKA , Joshua Ward Christensen , Puskal Prasad POKHAREL
Abstract: Systems and methods for servo zone transition optimization are described. In one embodiment, the storage system device includes a disk drive and a controller. In some embodiments, the controller may be configured to assess at least one operation of a read/write head of the disk drive; and format, based at least in part on the assessing of the read/write head, a disk surface of the disk drive with a first servo zone, a second servo zone, and an overlap region extending between a start point of the second servo zone and an end point of the first servo zone. In some cases, the overlap region starts towards a disk inner diameter (ID) and ends towards a disk outer diameter (OD).
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315.发明申请公开(公告)号：US20190381629A1
公开(公告)日：2019-12-19
申请号：US16434853
申请日：2019-06-07
Applicant: Seagate Technology LLC
Inventor： Edwin Rejda , Andrew Habermas , Jeff O'Konski , Andrew Sherve , Michael Thomas Johnson , Dongming Liu
Abstract: The present disclosure includes methods of lapping that include energizing one or more elements that are located proximal to a first magnetoresistive element in a transducer region and generate heat and cause the first magnetoresistive element to selectively expand in the lapping direction relative to one or more other magnetoresistive elements. The present disclosure also includes methods of lapping that use one or more thermal sensors located proximal to the first magnetoresistive element to help control lapping in the lapping direction. The present disclosure includes related lapping systems and sliders.
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Patent Agency Ranking
公开(公告)号：US10483999B1
公开(公告)日：2019-11-19
申请号：US15997571
申请日：2018-06-04
Applicant: Seagate Technology LLC
Inventor： Zheng Wu , Jason Vincent Bellorado , Marcus Marrow
Abstract: An apparatus may include a circuit configured to generate, by an analog to digital converter (ADC), one or more ADC samples based on an input signal. The circuit may be further configured to generate a first estimated signal using a first channel pulse response estimation with a gain constraint based on the one or more ADC samples and generate a second estimated signal using a second channel pulse response estimation with a phase constraint based on the one or more ADC samples.
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317.发明授权公开(公告)号：US10475473B2
公开(公告)日：2019-11-12
申请号：US16010930
申请日：2018-06-18
Applicant: Seagate Technology LLC
Inventor： Mehmet Fatih Erden
Abstract: A recording head has a first magnetic writer and a second magnetic writer offset from the first magnetic writer in a downtrack and crosstrack direction. The recording head has leads configured to deliver respective first and second write and/or laser currents to the first and second writers. The first and second write and/or laser currents enable the first and second writers to simultaneously write to adjacent tracks of a magnetic disk.
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318.发明授权公开(公告)号：US10474361B1
公开(公告)日：2019-11-12
申请号：US15969332
申请日：2018-05-02
Applicant: Seagate Technology LLC
Inventor： Christopher Nicholas Allo
Abstract: Apparatus and method for managing data. A host device is coupled to multiple hybrid data storage devices each having a primary non-volatile memory (NVM), a secondary NVM, a top level controller and a secondary controller. During a normal I/O processing mode, host access commands are serviced by the top level controllers to direct transfers with the respective primary and secondary NVMs. During a front end I/O processing mode, the host device forms a consolidated, distributed memory space in which data are separately stored to the secondary NVMs by the host device. The primary NVM may be rotatable recording media and the secondary NVM may be flash memory. The secondary NVM may be in the form of removable SSD cards that plug into the storage devices to support replacement and performance upgrades, as well as allowing transitions between cold and hot data storage modes in a single system.
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公开(公告)号：US10465099B1
公开(公告)日：2019-11-05
申请号：US15799264
申请日：2017-10-31
Applicant: Seagate Technology LLC
Inventor： Zubair Ahmed Khan , Dat Quach , Andrew Habermas , Joel William Hoehn
IPC: C09J175/04 , C09J7/02 , C09J133/10 , H01L21/683 , H01L21/304
Abstract: Described are methods for processing microelectronic device substrates by a lapping step, e.g., a final lapping step, wherein the step includes the use of an elastomeric pressure-sensitive adhesive to secure the microelectronic device substrate to a carrier that holds the substrate to a surface of the carrier during the lapping step, and wherein the pressure-sensitive adhesive can be a non-polysilicone based adhesive having mechanical properties that include a tan delta that is below about 0.2.
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公开(公告)号：US20190333599A1
公开(公告)日：2019-10-31
申请号：US15964691
申请日：2018-04-27
Applicant: Seagate Technology LLC
Inventor： Ludovic Danjean , Abdelhakim Alhussien , Erich Franz Haratsch
Abstract: Systems and methods presented herein provide for testing degradation in a storage device. In one embodiment, a storage controller is operable to test individual portions of a first of the plurality of storage areas of the storage device by: analyzing individual portions of the first storage area; determining that one or more of the individual portions of the first storage area have failed; and retire the failed one or more portions of the first storage area. The storage controller is further operable to write to the first storage area using an error correction code (ECC), and to test the remaining portions of the first storage area to determine whether the first storage area should be retired in response to writing to the first storage area.
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