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1. 发明申请

US20230065231A1 SELECTIVELY UTILIZING A READ PAGE CACHE MODE IN A MEMORY SUBSYSTEM 有权
公开(公告)号：US20230065231A1
公开(公告)日：2023-03-02
申请号：US17412225
申请日：2021-08-25
申请人： Micron Technology, Inc.
发明人： Jiangang Wu , Jing Sang Liu , Jung Sheng Hoei , Kishore Kumar Muchherla , Mark Ish , Myoung Jun Go , Nolan Tran , Qisong Lin
IPC分类号： G06F12/0806
摘要： A method is described, which includes receiving, by a memory subsystem, a memory command targeted at a memory array; determining, by the memory subsystem, if the memory command is a high priority memory command; and determining if the memory subsystem is processing any non-high priority memory commands. The memory subsystem enables a read page cache mode for processing the memory command in response to determining that (1) the memory command is a high priority memory command and (2) the memory subsystem is not processing any non-high priority memory commands Thereafter, the memory subsystem processes the memory command using the read page cache mode.

2. 发明授权

US11379304B1 Mitigating read disturb effects in memory devices 有权
公开(公告)号：US11379304B1
公开(公告)日：2022-07-05
申请号：US17160194
申请日：2021-01-27
申请人： Micron Technology, Inc.
发明人： Gerald L. Cadloni , Mark Ish , James P. Crowley
IPC分类号： G11C29/00 , G06F11/10 , G06F11/07 , G06F12/02 , G06F12/0882 , G06F12/1081 , G06F11/30
摘要： A total read counter, a plurality of die read counters, and a plurality of block read counters are maintained. Each die read counter is associated with a respective die of a memory device. A value of a block read counter and a value of a die read counter are determined for a specified block. Based on the value of the block read counter, the value of the die read counter, and the value of the total read counter, an estimated number of read events associated with the specified block of the memory device is determined. Responsive to determining that the estimated number of read events satisfies a predefined criterion, a media management operation of one or more pages associated with the specified block is performed.

3. 发明授权

US11221776B2 Metadata indication for a memory device 有权
公开(公告)号：US11221776B2
公开(公告)日：2022-01-11
申请号：US16730919
申请日：2019-12-30
申请人： Micron Technology, Inc.
发明人： Mark Ish , Yiran Liu , Tom V. Geukens
IPC分类号： G06F3/06 , G06F12/1009 , G06F11/10
摘要： Methods, systems, and devices for metadata indication are described herein. A method includes receiving, from a host system, a read command to retrieve information from a first block of a memory device, identifying a transfer unit associated with the first block indicated in the read command, identifying an indicator in metadata of the identified transfer unit indicating that at least one sector of the transfer unit has been altered based at least in part on identifying the transfer unit, validating data of the transfer unit stored in the memory device based at least in part on identifying the indicator in the metadata, and retrieving the information stored in the first block based at least in part on validating the data of the transfer unit.

4. 发明申请

US20210182227A1 HANDLING OPERATION COLLISIONS IN A NON-VOLATILE MEMORY 有权
公开(公告)号：US20210182227A1
公开(公告)日：2021-06-17
申请号：US17161303
申请日：2021-01-28
申请人： Micron Technology, Inc.
发明人： Lyle E. Adams , Mark Ish , Pushpa Seetamraju , Karl D. Schuh , Dan Tupy
IPC分类号： G06F13/376 , G06F3/06 , G06F13/16
摘要： A first operation identifier is assigned to a current operation directed to a memory component, the first operation identifier having a first entry in a first data structure that associates the first operation identifier with a first buffer identifier. It is determined whether the current operation collides with a prior operation assigned a second operation identifier, the second operation identifier having a second entry in the first data structure that associates the second operation identifier with a second buffer identifier. A latest flag is updated to indicate that the first entry is a latest operation directed to an address (1) in response to determining that the current operation collides with the prior operation and that the current and prior operations are read operations, or (2) in response to determining to determining that the current operation does not collide with a prior operation.

5. 发明授权

US11556258B1 Implementing automatic rate control in a memory sub-system 有权
公开(公告)号：US11556258B1
公开(公告)日：2023-01-17
申请号：US17379118
申请日：2021-07-19
申请人： Micron Technology, Inc.
发明人： Ying Huang , Mark Ish
IPC分类号： G06F3/06 , G06F12/02
摘要： A processing device in a memory system identifies, while the memory device is in a first state condition, a plurality of workload conditions associated with the memory device, wherein the plurality of workload conditions comprise data reflecting a performance condition of the memory device. The processing device determines, while the memory device is in the first state condition, a host rate of a host system write performance for the memory device based on one or more workload conditions of the plurality of workload conditions. The processing device determines that one or more workload conditions of the plurality of workload conditions satisfies a first threshold criterion. Responsive to determining that the one or more workload conditions of the plurality of workload conditions satisfies the first threshold criterion, the processing device detects a change in a condition of the memory device from the first state to a second state. The processing device determines, while the memory device is in the second state condition, an adjusted host rate based on the host rate and a calculated adjustment value. The processing device uses the adjusted host rate to determine a credit consuming rate for a host write operation for the memory device.

6. 发明授权

US11513959B2 Managing collisions in a non-volatile memory system with a coherency checker 有权
公开(公告)号：US11513959B2
公开(公告)日：2022-11-29
申请号：US17185059
申请日：2021-02-25
申请人： Micron Technology, Inc.
发明人： Horia C. Simionescu , Lyle E. Adams , Yongcai Xu , Mark Ish
IPC分类号： G06F12/08 , G06F12/0855
摘要： A request to read data from a location associated with a memory component is received. The request is assigned a first tag, the first tag having a first identifier of a first buffer to store data read from the location. The request to read data is determined to collide with an earlier request to write data to the location. The earlier request is assigned a second tag, the second tag having a second identifier of a second buffer to store data to write to the location. An attempt to lock the second tag and the second buffer for the request to read data is made. The request to read data is fulfilled from the second buffer in response to a successful attempt to lock the second tag and the second buffer.

7. 发明申请

US20220237078A1 MITIGATING READ DISTURB EFFECTS IN MEMORY DEVICES 有权
公开(公告)号：US20220237078A1
公开(公告)日：2022-07-28
申请号：US17160194
申请日：2021-01-27
申请人： Micron Technology, Inc.
发明人： Gerald L. Cadloni , Mark Ish , James P. Crowley
IPC分类号： G06F11/10 , G06F11/07 , G06F11/30 , G06F12/02 , G06F12/0882 , G06F12/1081
摘要： A total read counter, a plurality of die read counters, and a plurality of block read counters are maintained. Each die read counter is associated with a respective die of a memory device. A value of a block read counter and a value of a die read counter are determined for a specified block. Based on the value of the block read counter, the value of the die read counter, and the value of the total read counter, an estimated number of read events associated with the specified block of the memory device is determined. Responsive to determining that the estimated number of read events satisfies a predefined criterion, a media management operation of one or more pages associated with the specified block is performed.

8. 发明授权

US11347434B2 Block family tracking for memory devices 有权
公开(公告)号：US11347434B2
公开(公告)日：2022-05-31
申请号：US16854282
申请日：2020-04-21
申请人： Micron Technology, Inc.
发明人： Mark Ish
IPC分类号： G06F3/06 , G11C16/26 , G11C16/04
摘要： An example memory sub-system includes a memory device and a processing device, operatively coupled to the memory device. The processing device is configured to receive a read command specifying an identifier of a logical block and a page number; translate the identifier of the logical block into a physical address of a physical block stored on the memory device, wherein the physical address comprises an identifier of a memory device die; identify, based on block family metadata associated with the memory device, a block family associated with the physical block and the page number; determine a threshold voltage offset associated with the block family and the memory device die; compute a modified threshold voltage by applying the threshold voltage offset to a base read level voltage associated with the memory device die; and read, using the modified threshold voltage, data from a physical page identified by the page number within the physical block.

9. 发明申请

US20220129376A1 LOGICAL-TO-PHYSICAL MAPPING OF DATA GROUPS WITH DATA LOCALITY 有权
公开(公告)号：US20220129376A1
公开(公告)日：2022-04-28
申请号：US17572477
申请日：2022-01-10
申请人： Micron Technology, Inc.
发明人： Sanjay Subbarao , Johnny A. Lam , John E. Maroney , Mark Ish
IPC分类号： G06F12/02 , G06F12/0873 , G06F9/355 , G06F12/0882
摘要： A system includes integrated circuit (IC) dies having memory cells and a processing device, which is to perform operations including generating a number of zone map entries for zones of a logical block address (LBA) space that are sequentially mapped to physical address space of the plurality of IC dies, wherein each zone map entry corresponds to a respective data group that has been sequentially written to one or more IC dies; and generating a die identifier and a block identifier for each data block of multiple data blocks of the respective data group, wherein each data block corresponds to a media block of the plurality of IC dies.

10. 发明授权

US11204721B2 Input/output size control between a host system and a memory sub-system 有权
公开(公告)号：US11204721B2
公开(公告)日：2021-12-21
申请号：US16865247
申请日：2020-05-01
申请人： Micron Technology, Inc.
发明人： Sanjay Subbarao , Mark Ish
IPC分类号： G06F3/06 , G06F12/1009 , G11C16/04
摘要： A memory sub-system configured to dynamically determine input/output sizes of write commands based on a media physical layout of a memory sub-system. The memory sub-system can identify, dynamically in response to write commands being selected for execution in media units of the memory sub-system, a portion of a media layout that maps from logical addresses identified by the write commands in the logical address space to physical addresses of memory units in the media units. Based on the media layout, an input/output size for a next write command is identified and transmitted to the host system in a response. The host system generates the next write command and configures the amount of data to be written through the next write command based on the input/output size identified in the response.

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