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    LIMITING HOT-COLD SWAP WEAR LEVELING
    2.
    发明申请
    LIMITING HOT-COLD SWAP WEAR LEVELING 有权

    公开(公告)号：US20230019910A1

    公开(公告)日：2023-01-19

    申请号：US17954023

    申请日：2022-09-27

    Applicant: Micron Technology, Inc.

    Inventor： Fangfang Zhu ,  Ying Yu Tai ,  Ning Chen ,  Jiangli Zhu ,  Alex Tang

    IPC: G06F3/06

    Abstract: Embodiments include methods, systems, devices, instructions, and media for limiting hot-cold swap wear leveling in memory devices. In one embodiment, wear metric values are stored and monitored using multiple wear leveling criteria. The multiple wear leveling criteria include a hot-cold swap wear leveling criteria, which may make use of a write count offset value. Based on a first wear metric value of a first management group and a second wear metric value of a second management group, the first management group and the second management group are selected for a wear leveling swap operation. The wear leveling swap operation is performed with a whole management group read operation of the first management group to read a set of data, and a whole management group write operation to write the set of data to the second management group.

    Limiting hot-cold swap wear leveling
    3.
    发明授权
    Limiting hot-cold swap wear leveling 有权

    公开(公告)号：US11481119B2

    公开(公告)日：2022-10-25

    申请号：US16874389

    申请日：2020-05-14

    Applicant: Micron Technology, Inc.

    Inventor： Fangfang Zhu ,  Ying Yu Tai ,  Ning Chen ,  Jiangli Zhu ,  Alex Tang

    IPC: G06F12/00 ,  G06F13/00 ,  G06F3/06

    Abstract: Embodiments include methods, systems, devices, instructions, and media for limiting hot-cold swap wear leveling in memory devices. In one embodiment, wear metric values are stored and monitored using multiple wear leveling criteria. The multiple wear leveling criteria include a hot-cold swap wear leveling criteria, which may make use of a write count offset value. Based on a first wear metric value of a first management group and a second wear metric value of a second management group, the first management group and the second management group are selected for a wear leveling swap operation. The wear leveling swap operation is performed with a whole management group read operation of the first management group to read a set of data, and a whole management group write operation to write the set of data to the second management group.

    PERFORMING HYBRID WEAR LEVELING OPERATIONS BASED ON A SUB-TOTAL WRITE COUNTER
    6.
    发明申请
    PERFORMING HYBRID WEAR LEVELING OPERATIONS BASED ON A SUB-TOTAL WRITE COUNTER 审中-公开

    公开(公告)号：US20200110544A1

    公开(公告)日：2020-04-09

    申请号：US16153016

    申请日：2018-10-05

    Applicant: Micron Technology, Inc.

    Inventor： Fangfang Zhu ,  Jiangli Zhu ,  Ning Chen ,  Ying Yu Tai

    IPC: G06F3/06 ,  G06F12/10

    Abstract: Data is copied, from a second group of data blocks in a second plurality of groups of data blocks that are mapped, to a first group of data blocks in a first set of groups of data blocks that are not mapped to include the first group of data blocks in the second set of groups of data blocks that are mapped. A sub-total write counter associated with the first group of data blocks is reset. A value of the sub-total write counter indicates a number of write operations performed on the first group of data blocks since the first group of data blocks has been included in the second set of groups of data blocks. A wear leveling operation is performed on the first group of data blocks based on the sub-total write counter.

    CONSOLIDATING WRITE REQUEST IN CACHE MEMORY
    7.
    发明公开
    CONSOLIDATING WRITE REQUEST IN CACHE MEMORY 审中-公开

    公开(公告)号：US20240143231A1

    公开(公告)日：2024-05-02

    申请号：US18404999

    申请日：2024-01-05

    Applicant: Micron Technology, Inc.

    Inventor： Ning Chen ,  Jiangli Zhu ,  Yi-Min Lin ,  Fangfang Zhu

    IPC: G06F3/06

    CPC classification number: G06F3/0659 ,  G06F3/0604 ,  G06F3/0679

    Abstract: A write request directed to the non-volatile memory device is received. A stripe associated with an address specified by the write request is present in the volatile memory device is determined. The volatile memory device includes a plurality of stripes, each stripe of the plurality of stripes having a plurality of managed units. The write request on a managed unit of the stripe in the volatile memory device is performed. The stripe in the volatile memory device is evicted to a stripe in the non-volatile memory device.

    Maintaining data consistency in a memory sub-system that uses hybrid wear leveling operations
    8.
    发明授权
    Maintaining data consistency in a memory sub-system that uses hybrid wear leveling operations 有权

    公开(公告)号：US11874769B2

    公开(公告)日：2024-01-16

    申请号：US17698424

    申请日：2022-03-18

    Applicant: Micron Technology, Inc.

    Inventor： Ning Chen ,  Jiangli Zhu ,  Ying Yu Tai

    IPC: G06F12/02 ,  G06F3/06

    CPC classification number: G06F12/0246 ,  G06F3/061 ,  G06F3/064 ,  G06F3/065 ,  G06F3/0679 ,  G06F12/0292 ,  G06F2212/1036 ,  G06F2212/7201 ,  G06F2212/7211

    Abstract: A processing device in a memory sub-system maintains a mapping data structure to track data movements from a plurality of data management units associated with a media management operation on a memory device. The processing device further uses a first indicator and a second indicator of a plurality of indicators to indicate which data of data management units of a source group of data management units have been copied to a destination group of data management units during the media management operation. Data located in data management units preceding the first indicator have been copied to data management units of the destination group of data management units. Data located in data management units associated with the first indicator and the second indicator or between the first indicator and the second indicator are either copied to data management units of the destination group of data management units or remain located in data management units of the source group of data management units. Data located in data management units subsequent to the second indicator remain located in data management units of the source group of data management units and have not been copied to the destination group of data management units.

    Tracking host-provided metadata in a memory sub-system
    10.
    发明授权
    Tracking host-provided metadata in a memory sub-system 有权

    公开(公告)号：US11636008B2

    公开(公告)日：2023-04-25

    申请号：US17464449

    申请日：2021-09-01

    Applicant: MICRON TECHNOLOGY, INC.

    Inventor： Seungjune Jeon ,  Juane Li ,  Ning Chen

    IPC: G06F11/00 ,  G06F11/10

    Abstract: A request to program host data to a memory device of a memory sub-system is received. Redundancy metadata associated with the host data is generated. A determination is made, in view of the received request, whether the host data is valid data or invalid data. In response to a determination that the host data is invalid data, updated redundancy metadata associated with the host data is generated. The updated redundancy metadata indicates that the host data is invalid data. The host data and the updated redundancy metadata is programmed to the memory device.

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