Patents by Inventor Zhongguang Xu
Zhongguang Xu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240145010Abstract: A processing device in a memory sub-system initiates a partial block handling protocol for a closed block of a memory device, the block comprising a plurality of wordlines. The processing device further sends a first programming command to the memory device to program one or more wordlines of the block with first padding data having a first data pattern, wherein the one or more wordlines are adjacent to a last wordline of the block programmed before the block was closed. In addition, the processing device sends a second programming command to the memory device to program all of a set of remaining wordlines of the block with second padding data having a second data pattern comprising fewer bits of data per cell than the first data pattern.Type: ApplicationFiled: January 4, 2024Publication date: May 2, 2024Inventors: Zhongguang Xu, Nicola Ciocchini, Zhenlei Shen, Charles See Yeung Kwong, Murong Lang, Ugo Russo, Niccolo' Righetti
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Publication number: 20240105240Abstract: A read operation is performed on a set of memory cells addressable by a first wordline (WL), wherein the set of memory cells is comprised by an open translation unit (TU_of memory cells of a memory device. Respective threshold voltage offset bins for each WL of a second plurality of WLs coupled to respective sets of memory cells comprised by the open TU are determined based on a threshold voltage offset bin associated with the first WL. Respective default threshold voltages for each WL of the first plurality of WLs are updated based on the respective threshold voltage offset bins for each WL of the second plurality of WLs.Type: ApplicationFiled: December 6, 2023Publication date: March 28, 2024Inventors: Murong Lang, Zhenming Zhou, Jian Huang, Zhongguang Xu, Jiangli Zhu
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Patent number: 11929127Abstract: A system includes a memory device having a plurality of memory cells and a processing device operatively coupled to the memory device. The processing device is to determine to perform a rewrite on at least a portion of the plurality of memory cells. The processing device can determine that a number of rewrite operations at first subset of memory cells storing a first logic state fail to satisfy a threshold criterion. The processing device can also cause a rewrite of data stored at a second subset of memory cells storing a second logic state in response to determining the number of rewrite operations performed at the first subset of memory cells fail to satisfy the threshold criterion.Type: GrantFiled: August 31, 2021Date of Patent: March 12, 2024Assignee: Micron Technology, Inc.Inventors: Zhongguang Xu, Murong Lang, Zhenming Zhou
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Publication number: 20240071506Abstract: A memory device may include a memory and a controller. The controller may be configured to receive a read command associated with a block of the memory. The controller may be configured to determine a block type associated with the block. The controller may be configured to identify, based on the block type, one or more read voltage offsets for a read operation associated with the block. The controller may be configured to perform the read operation based on the one or more read voltage offsets.Type: ApplicationFiled: August 30, 2022Publication date: February 29, 2024Inventors: Zhongguang XU, Murong LANG, Zhenming ZHOU, Ugo RUSSO, Niccolo' RIGHETTI, Nicola CIOCCHINI
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Publication number: 20240061601Abstract: Aspects of the present disclosure configure a system component, such as a memory sub-system controller, to perform adaptive read level threshold voltage operations. The controller determines a memory reliability value associated with an individual portion of the set of memory components and selects a partition closing time for the individual portion of the set of memory components based on the memory reliability value. The controller defines a partition of the individual portion of the set of memory components based on the partition closing time and associates the partition with a bin of a plurality of bins, each of the plurality of bins representing an individual read level threshold voltage against which a charge distribution of data stored in the individual portion of the set of memory components is compared to determine one or more logical values.Type: ApplicationFiled: August 22, 2022Publication date: February 22, 2024Inventor: Zhongguang XU
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Patent number: 11901014Abstract: A processing device in a memory sub-system initiates a partial block handling protocol for a closed block of a memory device, the block comprising a plurality of wordlines. The processing device further sends a first programming command to the memory device to program one or more wordlines of the block with first padding data having a first data pattern, wherein the one or more wordlines are adjacent to a last wordline of the block programmed before the block was closed. In addition, the processing device sends a second programming command to the memory device to program all of a set of remaining wordlines of the block with second padding data having a second data pattern comprising fewer bits of data per cell than the first data pattern.Type: GrantFiled: May 9, 2022Date of Patent: February 13, 2024Assignee: Micron Technology, Inc.Inventors: Zhongguang Xu, Nicola Ciocchini, Zhenlei Shen, Charles See Yeung Kwong, Murong Lang, Ugo Russo, Niccolo' Righetti
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Patent number: 11881284Abstract: A first read operation is performed on a first set of memory cells addressable by a first wordline (WL), and a second read operation is performed on a second set of memory cells addressable by a second WL, wherein the first set of memory cells and the second set of memory cells are comprised by an open TU of memory cells. A first threshold voltage offset bin associated with the first WL is identified. A second threshold voltage offset bin associated with the second WL is identified. Respective threshold voltage offset bins for each WL of a plurality of WLs coupled to respective sets of memory cells comprised by the open TU are determined based on at least one of the first threshold voltage offset bin and the second threshold voltage offset bin. Respective default threshold voltages for each WL of the plurality of WLs are updated based on the threshold voltage offset bins.Type: GrantFiled: December 9, 2021Date of Patent: January 23, 2024Assignee: Micron Technology, Inc.Inventors: Murong Lang, Zhenming Zhou, Jian Huang, Zhongguang Xu, Jiangli Zhu
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Publication number: 20240020025Abstract: A request to perform a memory access operation on a plurality of memory cells of a memory device is received. In response to determining that the request is from a host, a first error recovery operation is performed, wherein the first error recovery operation is associated with a first plurality of demarcation voltages. In response to determining that the request is from a controller, a second error recovery operation is performed, wherein the second error recovery operation is associated with a second plurality of demarcation voltages, wherein the second plurality of demarcation voltages comprises a greater number of demarcation voltages than the first plurality of demarcation voltages.Type: ApplicationFiled: September 26, 2023Publication date: January 18, 2024Inventors: Zhongguang Xu, Jian Huang, Tingjun Xie, Murong Lang, Zhenming Zhou
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Patent number: 11861178Abstract: A request to perform a memory access operation on a plurality of memory cells of a memory device is receive. A request type associated with the memory access operation is determined. In response to determining that the request type associated with the request type associated with the memory access operation is a first request type, an error recovery operation associated with the first request type is performed. In response to determining that the request type associated with the memory access operation is a second request type, an error recovery operation associated with the second request type is performed.Type: GrantFiled: August 31, 2021Date of Patent: January 2, 2024Assignee: Micron Technology, Inc.Inventors: Zhongguang Xu, Jian Huang, Tingjun Xie, Murong Lang, Zhenming Zhou
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Publication number: 20230420066Abstract: Systems and methods are disclosed including a memory device and a processing device operatively coupled to the memory device. The processing device can perform operations comprising receiving, from a host system, an enhanced erase command referencing a block; performing a lookup to determine whether the block is marked in a grown bad block (GBB) data structure used to track blocks that have a defective select gate; and responsive to determining that the block is marked in the GBB data structure, discarding the enhanced erase command.Type: ApplicationFiled: September 6, 2023Publication date: December 28, 2023Inventors: Zhongguang Xu, Zhenlei Shen, Murong Lang
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Patent number: 11854644Abstract: Systems and methods are disclosed including a memory device and a processing device operatively coupled to the memory device. The processing device can perform operations comprising determining a parameter value of a select gate associated with a first set of memory cells; responsive to determining that the parameter value satisfies a threshold criterion, marking the first block in a grown bad block (GBB) data structure; performing one or more pulse operations on the first block to invalidate data stored on the block; receiving, from a host system, an enhanced erase command referencing a second block; and responsive to determining that the second block is marked in the GBB data structure, discarding the enhanced erase command.Type: GrantFiled: December 14, 2021Date of Patent: December 26, 2023Assignee: Micron Technology, Inc.Inventors: Zhongguang Xu, Zhenlei Shen, Murong Lang
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Publication number: 20230386578Abstract: A processing device in a memory sub-system initiates a partial block handling protocol for a closed block of a memory device. The block includes a plurality of wordlines. The processing device further sends a first programming command to the memory device to program one or more wordlines of the block with first padding data. The one or more wordlines are adjacent to a last wordline of the block programmed before the block was closed. In addition, the processing device sends a second programming command to the memory device to concurrently program a remaining set of the plurality of wordlines of the block to a threshold voltage.Type: ApplicationFiled: May 26, 2022Publication date: November 30, 2023Inventors: Zhongguang Xu, Tingjun Xie, Murong Lang
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Publication number: 20230360704Abstract: A processing device in a memory sub-system initiates a partial block handling protocol for a closed block of a memory device, the block comprising a plurality of wordlines. The processing device further sends a first programming command to the memory device to program one or more wordlines of the block with first padding data having a first data pattern, wherein the one or more wordlines are adjacent to a last wordline of the block programmed before the block was closed. In addition, the processing device sends a second programming command to the memory device to program all of a set of remaining wordlines of the block with second padding data having a second data pattern comprising fewer bits of data per cell than the first data pattern.Type: ApplicationFiled: May 9, 2022Publication date: November 9, 2023Inventors: Zhongguang Xu, Nicola Ciocchini, Zhenlei Shen, Charles See Yeung Kwong, Murong Lang, Ugo Russo, Niccolo' Righetti
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Patent number: 11763914Abstract: A first sequence of operations corresponding to an error recovery process of a memory sub-system is determined. A value corresponding to an operating characteristic of a memory sub-system is determined, the operating characteristic corresponding to execution of a first sequence of operations of an error recovery process. A determination is made that the value satisfies a condition. In response to the value satisfying the first condition, a second sequence of operations corresponding to the error recovery process is executed.Type: GrantFiled: December 21, 2021Date of Patent: September 19, 2023Assignee: Micron Technology, Inc.Inventors: Zhongguang Xu, Murong Lang, Zhenming Zhou
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Patent number: 11762589Abstract: A current operating characteristic value of a unit of the memory device is identified. An operating characteristic threshold value is identified from a set of operating characteristic thresholds, where the current operating characteristic value satisfies an operating characteristic threshold criterion that is based on the operating characteristic threshold value. A set of write-to-read (W2R) delay time thresholds that corresponds to the operating characteristic threshold value is identified from a plurality of sets of W2R delay time thresholds. Each of the W2R delay time thresholds in the set is associated with a corresponding read voltage level. A W2R delay time threshold associated with a W2R delay time threshold criterion is identified from the set of W2R delay time thresholds, where the W2R threshold criterion is satisfied by a current W2R delay time of the memory sub-system. A read voltage level associated with the identified W2R delay time threshold is identified.Type: GrantFiled: August 6, 2021Date of Patent: September 19, 2023Assignee: Micron Technology, Inc.Inventors: Zhongguang Xu, Tingjun Xie, Murong Lang, Zhenming Zhou
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Patent number: 11740959Abstract: An initial level of sensing voltage is set based on one or more characteristics of the segment of the memory device. A count for operational cycles for a segment of a memory device is set. Responsive to determining that a number of operational cycles performed on the segment of the memory device has reached the set count of operational cycles, the sensing voltage is varied with respect to the initial level of sensing voltage. The sensing voltage is adjusted to a new level based on wearing of the segment of the memory device during the number of operational cycles performed on the segment of the memory device.Type: GrantFiled: July 9, 2020Date of Patent: August 29, 2023Assignee: Micron Technology, Inc.Inventors: Zhongguang Xu, Murong Lang, Zhenming Zhou
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Patent number: 11742029Abstract: A method includes performing a first write operation that writes data to a first memory unit of a group of memory units in a memory device, determining a write-to-write (W2W) delay based on a time difference between the first write operation and a second write operation on a memory unit in the group of memory units, wherein the second write operation occurred prior to the first write operation, identifying a threshold time criterion that is satisfied by the W2W delay, identifying a first read voltage level associated with the threshold time criterion, and associating the first read voltage level with a second memory unit of the group of memory units. The second memory unit can be associated with a second read voltage level that satisfies a selection criterion based on a comparison of the second read voltage level to the first read voltage level.Type: GrantFiled: August 13, 2021Date of Patent: August 29, 2023Assignee: Micron Technology, Inc.Inventors: Zhongguang Xu, Tingjun Xie, Murong Lang, Zhenming Zhou
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Managing execution of a scrub operation in view of an operating characteristic of a memory subsystem
Patent number: 11742053Abstract: A value corresponding to an operating characteristic of a memory sub-system is determined. The value is compared to a threshold level to determine whether a condition is satisfied. In response to satisfying the condition, a read scrub operation associated with the memory sub-system is executed.Type: GrantFiled: September 7, 2021Date of Patent: August 29, 2023Assignee: Micron Technology, Inc.Inventors: Murong Lang, Zhongguang Xu, Zhenming Zhou -
Patent number: 11721381Abstract: A processing device of a memory sub-system is configured to determine a current refresh frequency associated with the memory device, the current refresh frequency specifying a rate of performing refresh operations on data stored at the memory device; compute an updated refresh frequency by updating the current refresh frequency based on a criterion reflecting a result of comparing one or more operating parameters of the memory device to their respective threshold values; and perform a refresh operation on data stored at the memory device according to the updated refresh frequency.Type: GrantFiled: August 3, 2021Date of Patent: August 8, 2023Assignee: Micron Technology, Inc.Inventors: Li-Te Chang, Murong Lang, Zhongguang Xu, Zhenming Zhou
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Publication number: 20230207028Abstract: A threshold criterion of a plurality of threshold criteria is identified based on a current program-erase cycle (PEC) count of a first block of a memory device, wherein the first block is configured as quad-level cell (QLC) memory. A raw bit error rate (RBER) associated with data of a second block of the memory device is determined, wherein the second block is configured as single-level cell (SLC) memory. It is determined that the RBER associated with the data of the second block satisfies the threshold criterion. In response to determining that the RBER satisfies the threshold criterion, the data of the second block is written to the first block.Type: ApplicationFiled: January 20, 2022Publication date: June 29, 2023Inventors: Jian Huang, Zhenming Zhou, Murong Lang, Zhongguang Xu, Jiangli Zhu