Patents by Inventor Murong Lang

Murong Lang 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).

  • Publication number: 20250140320
    Abstract: Apparatuses and methods for performing sensing operations on partially programmed erase blocks are provided. One example apparatus can include a memory array comprising a plurality of erase blocks and a controller coupled to the memory array. The controller can be configured to apply a first sensing voltage to a first access line of a first group of access lines corresponding to the first erase block during a first sensing operation on the first erase block that is partially programmed, apply a first pass voltage to a number of programmed access lines of the first group of access lines corresponding to the first erase block during the first sensing operation, and apply a second pass voltage a number of unprogrammed access lines of the first group of access lines corresponding to the first erase block during the first sensing operation.
    Type: Application
    Filed: July 25, 2024
    Publication date: May 1, 2025
    Inventors: Hanping Chen, Zhongguang Xu, Murong Lang, Zhenming Zhou
  • Publication number: 20250138996
    Abstract: 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 first read level offset associated with reading a first set of data from a first level using a first read level of a plurality of read levels. The controller applies the first read level offset to a machine learning model to estimate a second read level offset, associated with reading a second set of data from a second level of the plurality of levels, using a second read level of the plurality of read levels. The controller updates, based on the first read level offset and the estimated second read level offset, a look-up table that includes a set of read level offsets used to read data from the plurality of levels of the individual component.
    Type: Application
    Filed: October 25, 2023
    Publication date: May 1, 2025
    Inventors: Li-Te Chang, Charles S. Kwong, Wei Wang, Murong Lang, Shenming Zhou
  • Publication number: 20250118364
    Abstract: A difference between a recorded time stamp for a first set of memory cells comprised by an open translation unit (TU) of memory cells and a current time stamp for the open TU is determined, wherein the first set of memory cells comprises a most recently programmed set of memory cells. It is determined, based on a current temperature for the open TU and the difference between the recorded time stamp and the current time stamp, that a second set of memory cells comprised by the open TU is in a coarse programming state. A programming operation is performed on the second set of memory cells using a reduced programming state verify level and a reduced programming state gate step size associated with the second set of memory cells.
    Type: Application
    Filed: December 19, 2024
    Publication date: April 10, 2025
    Inventors: Murong Lang, Zhenming Zhou, Jian Huang, Tingjun Xie, Jiangli Zhu, Nagendra Prasad Ganesh Rao, Sead Zildzic
  • Patent number: 12272418
    Abstract: 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: Grant
    Filed: September 6, 2023
    Date of Patent: April 8, 2025
    Assignee: Micron Technology, Inc.
    Inventors: Zhongguang Xu, Zhenlei Shen, Murong Lang
  • Publication number: 20250111886
    Abstract: Methods, systems, and devices for read window management in a memory system are described. A memory system may determine, for a set of memory cells, a first value for a read window that is associated with a set of one or more threshold voltages each representing a different multi-bit value. The memory system may then use the first value for the read window to predict a second value for the read window. Based on the second value for the read window, the memory system may predict an error rate for the set of memory cells. The memory system may then set a value for an offset for a threshold voltage of the set of one or more threshold voltages based on the error rate.
    Type: Application
    Filed: December 12, 2024
    Publication date: April 3, 2025
    Inventors: Li-Te Chang, Murong Lang, Zhenming Zhou, Ting Luo
  • Publication number: 20250104772
    Abstract: A method includes performing, over a time period, a quantity of write operations associated with a quad-level cell (QLC) memory block, determining the time period exceeds a threshold time, designating the QLC memory block as a bimodal, determining a voltage threshold level of a last successful read operation associated with the QLC memory block, and setting a read threshold level of at least a portion of the QLC memory block at the voltage threshold level of the last successful read operation.
    Type: Application
    Filed: December 6, 2024
    Publication date: March 27, 2025
    Inventors: Tingjun Xie, Murong Lang, Fangfang Zhu, Jiangli Zhu, Zhenming Zhou
  • Patent number: 12260916
    Abstract: 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: Grant
    Filed: January 4, 2024
    Date of Patent: March 25, 2025
    Assignee: Micron Technology, Inc.
    Inventors: Zhongguang Xu, Nicola Ciocchini, Zhenlei Shen, Charles See Yeung Kwong, Murong Lang, Ugo Russo, Niccolo' Righetti
  • Patent number: 12242755
    Abstract: A system includes a memory device and a processing device, operatively coupled with the memory device, to perform operations including: receiving a request to perform a read operation on a segment of the memory device; determining whether a temperature offset value of the segment satisfies a threshold criterion associated with a program erase cycle count of the segment; and responsive to determining that the temperature offset value satisfies the threshold criterion, performing a corrective read operation on the segment of the memory device, wherein a sense time parameter of the corrective read operation is modified according to the temperature offset value and the program erase cycle count.
    Type: Grant
    Filed: February 6, 2024
    Date of Patent: March 4, 2025
    Assignee: Micron Technology, Inc.
    Inventors: Zhenming Zhou, Murong Lang, Ching-Huang Lu, Nagendra Prasad Ganesh Rao
  • Publication number: 20250069675
    Abstract: The disclosure configures a memory sub-system controller to use prior read verify operations to selectively apply enhancements to read window budgets (RWB). The controller receives a request to perform a memory operation on data stored in an individual memory component of a set of memory components. The controller accesses RWB tracking information associated with the individual memory component and determines that the tracking information associated with the individual memory component indicates a need for enhancing a RWB associated with the memory operation. The controller applies one or more enhancement processes to the individual memory component in response to determining that the tracking information associated with the individual memory component indicates the need for enhancing the RWB associated with the memory operation.
    Type: Application
    Filed: July 16, 2024
    Publication date: February 27, 2025
    Inventors: Daniel Zhang, Yu-Chung Lien, Peng Zhang, Murong Lang, Zhenming Zhou
  • Publication number: 20250061928
    Abstract: 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: Application
    Filed: November 4, 2024
    Publication date: February 20, 2025
    Inventors: Murong Lang, Zhenming Zhou, Jian Huang, Zhongguang Xu, Jiangli Zhu
  • Patent number: 12217794
    Abstract: A difference between a recorded time stamp for a first set of memory cells comprised by an open translation unit (TU) of memory cells and a current time stamp for the open TU is determined, wherein the first set of memory cells comprises a most recently programmed set of memory cells. It is determined, based on a current temperature for the open TU and the difference between the recorded time stamp and the current time stamp, that a second set of memory cells comprised by the open TU is in a coarse programming state. A programming operation is performed on the second set of memory cells using a reduced programming state verify level and a reduced programming state gate step size associated with the second set of memory cells.
    Type: Grant
    Filed: January 29, 2024
    Date of Patent: February 4, 2025
    Assignee: Micron Technology, Inc.
    Inventors: Murong Lang, Zhenming Zhou, Jian Huang, Tingjun Xie, Jiangli Zhu, Nagendra Prasad Ganesh Rao, Sead Zildzic
  • Patent number: 12216529
    Abstract: A command to read specific data stored at a memory die is received. A read operation is performed while operating both a memory controller and the memory die simultaneously at a first frequency. A processor determines whether a first error rate associated with the memory die satisfies a first error threshold criterion (e.g., UECC). Responsive to determining that the first error rate satisfies the first error threshold criterion, the read operation is repeated while operating at least one of the memory controller or the memory die at a second frequency that is different from the first frequency. The processor determines whether a second error rate associated with the memory die satisfies a second error threshold criterion. Responsive to determining that the second error rate satisfies the second error threshold criterion (e.g. UECC persists), determining that the read operation has failed.
    Type: Grant
    Filed: September 19, 2022
    Date of Patent: February 4, 2025
    Assignee: Micron Technology, Inc.
    Inventors: Jian Huang, Zhenming Zhou, Zhongguang Xu, Murong Lang
  • Publication number: 20250036307
    Abstract: Methods, systems, and devices for cross-temperature mitigation in a memory system are described. A memory system may determine a first temperature of the memory system. Based on the first temperature satisfying a first threshold, the memory system may write a set of data to a first block of the memory system that is configured with a first rate for performing scan operations to determine error information for the first block. The memory system may then determine a second temperature of the memory system after writing the set of data to the first block. Based on the second temperature satisfying a second threshold, the memory system may transfer the set of data to a second block of the memory system that is configured with a second rate for performing scan operations to determine error information for the second block.
    Type: Application
    Filed: October 10, 2024
    Publication date: January 30, 2025
    Inventors: Murong Lang, Christina Papagianni, Zhenming Zhou, Ting Luo
  • Patent number: 12210752
    Abstract: 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: Grant
    Filed: September 26, 2023
    Date of Patent: January 28, 2025
    Assignee: Micron Technology, Inc.
    Inventors: Zhongguang Xu, Jian Huang, Tingjun Xie, Murong Lang, Zhenming Zhou
  • Patent number: 12198777
    Abstract: Methods, systems, and devices for read window management in a memory system are described. A memory system may determine, for a set of memory cells, a first value for a read window that is associated with a set of one or more threshold voltages each representing a different multi-bit value. The memory system may then use the first value for the read window to predict a second value for the read window. Based on the second value for the read window, the memory system may predict an error rate for the set of memory cells. The memory system may then set a value for an offset for a threshold voltage of the set of one or more threshold voltages based on the error rate.
    Type: Grant
    Filed: July 14, 2022
    Date of Patent: January 14, 2025
    Assignee: Micron Technology, Inc.
    Inventors: Li-Te Chang, Murong Lang, Zhenming Zhou, Ting Luo
  • Publication number: 20250004663
    Abstract: Aspects of the present disclosure configure a system component, such as a memory sub-system controller, to provide adaptive media management based on temperature-related memory component capabilities. The controller determines a read disturb condition criterion associated with an individual memory component of a set of memory components and determines a temperature of a memory sub-system comprising the set of memory components. The controller adjusts the read disturb condition criterion based on the temperature and program erase cycles (PEC) of the memory sub-system and performs an individual media management operation on the individual memory component in response to determining that the adjusted read disturb condition criterion has been satisfied.
    Type: Application
    Filed: June 24, 2024
    Publication date: January 2, 2025
    Inventors: Christina Papagianni, Murong Lang, Zhenming Zhou
  • Patent number: 12176060
    Abstract: 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: Grant
    Filed: December 6, 2023
    Date of Patent: December 24, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Murong Lang, Zhenming Zhou, Jian Huang, Zhongguang Xu, Jiangli Zhu
  • Publication number: 20240420784
    Abstract: Aspects of the present disclosure configure a memory sub-system controller to selectively adjust a program pulse for different word line groups of a memory sub-system. The controller receives a request to program data to an individual memory component of a set of memory components. The controller determines that a program erase count (PEC) associated with the individual memory component transgresses a threshold value. The controller, in response to determining that the PEC associated with the individual memory component transgresses the threshold value, selectively adjusts a predetermined program voltage (Vpgm) associated with a subset of word lines (WLs) of the individual memory component based on whether the subset of WLs is associated with an individual WL group (WLG). The controller programs the data to the individual memory component according to the selectively adjusted predetermined Vpgm.
    Type: Application
    Filed: June 11, 2024
    Publication date: December 19, 2024
    Inventors: Murong Lang, Peng Zhang, Lei Lin, Zhenming Zhou, Jun Wan
  • Patent number: 12169646
    Abstract: A data structure including a target read voltage level corresponding to each set of values of a plurality of sets of values corresponding to a plurality of operating characteristics is stored. In response to a read command associated with a memory cell, a current set of measured values of the plurality of operating characteristics associated with the memory cell is measured. A match between a first set of values of the plurality of sets of values corresponding to the plurality of operating characteristics and the current set of measured values is identified. Using the data structure, a first stored target read voltage level corresponding to the match between the first set of values and the current set of measured values is identified. The read command is executed using the first stored target read voltage level.
    Type: Grant
    Filed: April 8, 2022
    Date of Patent: December 17, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Murong Lang, Zhenming Zhou
  • Patent number: 12165709
    Abstract: A method includes performing, over a time period, a quantity of write operations associated with a quad-level cell (QLC) memory block, determining the time period exceeds a threshold time, designating the QLC memory block as a bimodal, determining a voltage threshold level of a last successful read operation associated with the QLC memory block, and setting a read threshold level of at least a portion of the QLC memory block at the voltage threshold level of the last successful read operation.
    Type: Grant
    Filed: July 28, 2022
    Date of Patent: December 10, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Tingjun Xie, Murong Lang, Fangfang Zhu, Jiangli Zhu, Zhenming Zhou