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公开(公告)号：US11768701B2
公开(公告)日：2023-09-26
申请号：US16572973
申请日：2019-09-17
Applicant: Western Digital Technologies, Inc.
Inventor： Bernd Lamberts , Remmelt Pit , Cory J. Peterson , Kris Schouterden , David Hall , Shad Thorstenson , Andy Larson
CPC classification number: G06F9/4881 , G06F9/466 , G06F16/2365 , H04L9/0637 , G06F2209/481 , H04L9/50
Abstract: A Data Storage Device (DSD) includes a memory for storing data, and a controller configured to execute firmware or code to perform a task. While performing the task, the controller is further configured to assign unique identifiers to respective firmware or code portions that are executed to perform the task, and create a list or data structure including the unique identifier assigned to the firmware or code portion that created the task. A unique identifier is added to the list or data structure for each firmware or code portion executed for the task. The list or data structure indicates the order in which the firmware or code portions are executed.
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2.发明授权公开(公告)号：US10777225B2
公开(公告)日：2020-09-15
申请号：US16018915
申请日：2018-06-26
Applicant: Western Digital Technologies, Inc.
Inventor： Pankaj Mehra , Bernd Lamberts , Sridhar Chatradhi , Jordan A. Katine
Abstract: Disclosed herein are methods of using embedded disconnected circuits (EDC) in magnetic storage media to assist in reading data from and writing data to the magnetic storage media. A wireless activation signal is used to activate an EDC in a magnetic storage media. Once activated, the EDC may assist to record data in and/or read data from one or more memory locations of the magnetic storage media.
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公开(公告)号：US11775366B2
公开(公告)日：2023-10-03
申请号：US17204234
申请日：2021-03-17
Applicant: Western Digital Technologies, Inc.
Inventor： Zarko Popov , Bernd Lamberts , Hitoshi Yoshida , Mao Nishiyama , Victor Ramirez
CPC classification number: G06F11/008 , G06N7/01 , G06N20/00 , G11B20/1037 , G11B20/1879 , G11B20/1217 , G11B2020/1222
Abstract: The present disclosure is directed to a data storage device that includes a refresh monitor based on a learning based feedback control. The refresh monitor is used to control refresh operations to account for effects of writes to media, e.g., adjacent track interference (ATI). Read operations are analyzed to derive damage information usable to update one or more probability distributions, upon which the learning is updated or reinforced and carried forward. In one embodiments, the data storage device includes control circuitry configured to maintain a refresh monitor based on a learning system, analyze a read operation with the refresh monitor; adjust the refresh monitor by updating the one or more probability distributions based on the analyzed read operation; and execute a refresh operation to refresh data based on the adjusted refresh monitor.
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公开(公告)号：US20230161487A1
公开(公告)日：2023-05-25
申请号：US17531734
申请日：2021-11-20
Applicant: Western Digital Technologies, Inc.
Inventor： Bernd Lamberts , Shad H. Thorstenson , Andrew Larson , Mark Bergquist
IPC: G06F3/06 , G06F12/0802
CPC classification number: G06F3/0625 , G06F3/0655 , G06F3/0679 , G06F12/0802 , G06F2212/60
Abstract: A Data Storage Device (DSD) includes at least one Non-Volatile Memory (NVM) configured to store data and a Non-Volatile Cache (NVC). Write data is stored in a volatile memory in preparation for writing the write data in the at least one NVM. In response to a power loss of the DSD, at least a portion of the data stored in the volatile memory is transferred from the volatile memory to the NVC and one or more parameters are determined for deriving a margin representing an additional amount of data for transfer from the volatile memory to the NVC using a remaining power following a power loss. A size of the NVC is adjusted based at least in part on the derived margin.
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公开(公告)号：US11531582B2
公开(公告)日：2022-12-20
申请号：US16935763
申请日：2020-07-22
Applicant: Western Digital Technologies, Inc.
Inventor： Bernd Lamberts , Remmelt Pit , Abhishek Srivastava , Karthik Venkatesh , Ammar A. Zayed
Abstract: A data storage device is disclosed comprising a non-volatile storage medium (NVSM) having a plurality of data sectors and a plurality of reserve sectors. A map-out value is generated for each of a first plurality of the data sectors based on a read latency of each of the first plurality of data sectors, and when the map-out value of a first data sector in the first plurality of data sectors exceeds a threshold, a first logical block address (LBA) is mapped from the first data sector to a first reserve sector. When the map-out value of a second data sector in the first plurality of data sectors exceeds the map-out value of the first data sector, the first LBA is mapped from the first reserve sector back to the first data sector, and a second LBA is mapped from the second data sector to the first reserve sector.
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Patent Agency Ranking
公开(公告)号：US12230304B2
公开(公告)日：2025-02-18
申请号：US18232003
申请日：2023-08-09
Applicant: WESTERN DIGITAL TECHNOLOGIES, INC.
Inventor： Bernd Lamberts , Bernhard E. Knigge , Erhard Schreck , Qing Dai
Abstract: Various illustrative aspects are directed to a data storage device, comprising one or more disks; an actuator mechanism configured to position one or more heads proximate to a corresponding disk surface of the one or more disks; and one or more processing devices. The one or more processing devices are configured to receive signals indicative of conditions of a write operation by the selected head. The one or more processing devices are further configured to determine, based on the signals, a verification status indicating whether the write operation was successful. The one or more processing devices are further configured to output the verification status within a selected time limit.
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公开(公告)号：US11644986B1
公开(公告)日：2023-05-09
申请号：US17531734
申请日：2021-11-20
Applicant: Western Digital Technologies, Inc.
Inventor： Bernd Lamberts , Shad H. Thorstenson , Andrew Larson , Mark Bergquist
IPC: G06F12/00 , G06F3/06 , G06F12/0802
CPC classification number: G06F3/0625 , G06F3/0655 , G06F3/0679 , G06F12/0802 , G06F2212/60
Abstract: A Data Storage Device (DSD) includes at least one Non-Volatile Memory (NVM) configured to store data and a Non-Volatile Cache (NVC). Write data is stored in a volatile memory in preparation for writing the write data in the at least one NVM. In response to a power loss of the DSD, at least a portion of the data stored in the volatile memory is transferred from the volatile memory to the NVC and one or more parameters are determined for deriving a margin representing an additional amount of data for transfer from the volatile memory to the NVC using a remaining power following a power loss. A size of the NVC is adjusted based at least in part on the derived margin.
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公开(公告)号：US20220385672A1
公开(公告)日：2022-12-01
申请号：US17333007
申请日：2021-05-27
Applicant: Western Digital Technologies, Inc.
Inventor： Bernd Lamberts , Jeffrey Hobbet , Evan Richardson , Remmelt Pit , Ravi Singh
Abstract: An approach to exchanging information between data storage devices (DSDs) within a secure data center and an external fleet health manager (FHM) application includes querying one or more DSDs for data to be analyzed, including providing a unique query identifier, whereby a particular DSD responsively provides (i) a device identifier identifying itself, (ii) a random key code for authentication and integrity purposes, (iii) the data to be analyzed, and (iv) the query identifier for the FHM application to verify. The FHM application can then digitally sign a corrective action payload, using the key code from the particular DSD, including the query identifier and the device identifier and a recommended corrective action, and transmit the signed corrective action payload to the data center for application to the particular DSD, whereby the DSD can execute pre-defined fundamental repair action operation(s) corresponding to the corrective action for in-situ repair.
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9.发明申请公开(公告)号：US20200007169A1
公开(公告)日：2020-01-02
申请号：US16020853
申请日：2018-06-27
Applicant: Western Digital Technologies, Inc.
Inventor： Bernd Lamberts , Remmelt Pit , Timothy Lieber , Robert M. Lester , Zarko Popov
Abstract: A dynamic scalable error correction coding (ECC) scheme for a data storage system involves a system controller predicting a type and/or amount of ECC needed to reconstruct data to be stored on a particular data storage device(s) based on operational data integrity information accessed from the array of data storage devices. Thus, redundancy does not need to be allocated unless required. The devices may be logically grouped into subsets according to common characteristics, whereby the prediction made for a device in a subset may be based on the data integrity information from that subset, as well as from other relevant subsets.
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公开(公告)号：US20180356992A1
公开(公告)日：2018-12-13
申请号：US15621932
申请日：2017-06-13
Applicant: Western Digital Technologies, Inc.
Inventor： Bernd Lamberts , Vijay Karamcheti
IPC: G06F3/06
Abstract: The disclosed multi-device platform includes, by way of example, a system that receives a host command including a logical address and determines a hybrid storage device unit based on the logical address. The hybrid storage device unit has a set of hybrid physical storage devices and the set of hybrid physical storage devices includes one or more magnetic storage devices and one or more flash storage devices. The system selects a first plurality of physical storage devices from the set of hybrid physical storage devices, generates a plurality of device commands for the first plurality of physical storage devices based on the host command, and executes the plurality of device commands on the first plurality of physical storage devices.
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