Patents by Inventor Kishore Kumar

Kishore Kumar 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).

  • Patent number: 11915776
    Abstract: A method can include receiving a request to read data from a block of a memory device, identifying a block family associated with the block of the memory device, identifying a voltage distribution parameter value associated with the block family, wherein the voltage distribution parameter value reflects an aggregate value of a corresponding voltage distribution associated with a plurality of memory cells of the block family, and determining a set of read levels associated with the voltage distribution parameter value, wherein each read level in the set of read levels corresponds to a respective voltage distribution of at least one memory cell comprised by the block of the memory device. The block family can be identified using a data structure that maps block identifiers to corresponding block family identifiers. The voltage distribution parameter value can be identified using a data structure that maps block family identifiers to corresponding voltage parameter values.
    Type: Grant
    Filed: September 12, 2022
    Date of Patent: February 27, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Michael Sheperek, Kishore Kumar Muchherla, Shane Nowell, Mustafa N Kaynak, Larry J Koudele
  • Patent number: 11915764
    Abstract: Memories might include an array of memory cells and a controller for access of the array of memory cells. The controller might be configured to cause the memory to initiate an array operation on the array of memory cells, indicate an unavailability to initiate a next array operation, append a delay interval to an array access time of the array operation, and indicate an availability to initiate a next array operation in response to a completion of the delay interval. The delay interval might have a duration determined in response to an indication of temperature.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: February 27, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Jeremy Binfet, Kishore Kumar Muchherla
  • Patent number: 11915785
    Abstract: A request to perform a write operation at a memory device is received. Current wordline start voltage (WLSV) information associated with a particular memory segment of the plurality of memory segments is retrieved. The write operation is performed on the particular memory segment. In a firmware record in a memory sub-system controller, information is stored indicative of a last written memory page associated with the particular memory segment on which the write operation is performed. The firmware record is managed in view of the information indicative of the last written memory page associated with the performed write operation. Each entry of the firmware record comprises one or more identifying indicia associated with a respective memory segment, at least one of the identifying indicia being a wordline start voltage (WLSV) associated with the respective memory segment.
    Type: Grant
    Filed: January 26, 2021
    Date of Patent: February 27, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Jiangang Wu, Lei Zhou, Jung Sheng Hoei, Kishore Kumar Muchherla, Qisong Lin
  • Publication number: 20240061589
    Abstract: A method includes determining a logical saturation of a memory device in a memory sub-system and adjusting a code rate of the memory device based on the logical saturation, wherein the code rate represents a ratio of user data to a combination of the user data and error correction data.
    Type: Application
    Filed: August 17, 2022
    Publication date: February 22, 2024
    Inventors: Kishore Kumar Muchherla, Mustafa N. Kaynak, Jonathan S. Parry, Sivagnanam Parthasarathy, Akira Goda
  • Publication number: 20240062799
    Abstract: Methods, apparatuses and systems related to maintaining stored data are described. The apparatus may be configured to refresh the stored data according to schedule that includes different delays between successive refresh operations.
    Type: Application
    Filed: August 17, 2022
    Publication date: February 22, 2024
    Inventors: Huai-Yuan Tseng, Akira Goda, Kishore Kumar Muchherla, James Fitzpatrick, Tomoharu Tanaka, Eric N. Lee, Dung V. Nguyen, David Ebsen
  • Publication number: 20240054048
    Abstract: A system related to providing multi-layer code rates for special event protection with reduced performance penalty for memories is disclosed. Based on an impending stress event, extra error correction code data is utilized to encode user data obtained from a host. The user data and first error correction code data are written to a first block and the extra error correction code data is written to a second block. Upon stress event completion, pages having user data with the extra error correction code data are scanned. If pages of the first block are unable to satisfy reliability requirements, a touch-up process is executed on each page in the first block to reinstate the first block so that the extra error correction code data is no longer needed. The extra error correction code data is deleted from the second block and the second block is made available for user data.
    Type: Application
    Filed: August 9, 2022
    Publication date: February 15, 2024
    Inventors: Kishore Kumar Muchherla, Huai-Yuan Tseng, Mustafa N. Kaynak, Akira Goda, Sivagnanam Parthasarathy, Jonathan Scott Parry
  • Patent number: 11899966
    Abstract: An example memory sub-system comprises: a memory device; and a processing device, operatively coupled with the memory device. The processing device is configured to: receive a first host data item; store the first host data item in a first page of a first logical unit of a memory device, wherein the first page is associated with a fault tolerant stripe; receive a second host data item; store the second host data item in a second page of the first logical unit of the memory device, wherein the second page is associated with the fault tolerant stripe, and wherein the second page is separated from the first page by one or more wordlines including a dummy wordline storing no host data; and store, in a third page of a second logical unit of the memory device, redundancy metadata associated with the fault tolerant stripe.
    Type: Grant
    Filed: July 25, 2022
    Date of Patent: February 13, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Kishore Kumar Muchherla, Mark A. Helm, Giuseppina Puzzilli, Peter Feeley, Yifen Liu, Violante Moschiano, Akira Goda, Sampath K. Ratnam
  • Patent number: 11899607
    Abstract: An apparatus comprises an interconnect providing communication paths between agents coupled to the interconnect. A coordination agent is provided which performs an operation requiring sending a request to each of a plurality of target agents, and receiving a response from each of the target agents, the operation being unable to complete until the response has been received from each of the target agents. Storage circuitry is provided which is accessible to the coordination agent and configured to store, for each agent that the coordination agent may communicate with via the interconnect, a latency indication for communication between that agent and the coordination agent. The coordination agent is configured, prior to performing the operation, to determine a sending order in which to send the request to each of the target agents, the sending order being determined in dependence on the latency indication for each of the target agents.
    Type: Grant
    Filed: June 1, 2021
    Date of Patent: February 13, 2024
    Assignee: Arm Limited
    Inventors: Timothy Hayes, Alejandro Rico Carro, Tushar P. Ringe, Kishore Kumar Jagadeesha
  • Publication number: 20240045616
    Abstract: Methods, systems, and apparatuses include receiving a write command including user data. The write command is directed to a portion of memory including a first and second block and a first and second user data portion are directed to the first and second block. Temporary parity data is generated using the first and second user data portions. The temporary parity data and the first and second user data portions are stored in a buffer. Portions of the first and second block are programmed with two programming passes. The first and second user data portions in the buffer are invalidated in response to a completion of the second programming pass of the portions of the first and second blocks. The temporary parity data is maintained in the buffer until a second programming pass of the first and second block.
    Type: Application
    Filed: August 5, 2022
    Publication date: February 8, 2024
    Inventors: Kishore Kumar Muchherla, Lakshmi Kalpana Vakati, Dave Scott Ebsen, Peter Feeley, Sanjay Subbarao, Vivek Shivhare, Jiangli Zhu, Fangfang Zhu, Akira Goda
  • Publication number: 20240049126
    Abstract: A mobile computing device comprising: a wireless communications interface configured to connect to a network deployed by a plurality of access points; a short-range wireless communications interface configured to communicate with one or more nearby computing devices; a processor interconnected with the wireless communications interface and the short-range wireless communications interface, the processor configured to: obtain, from the one or more nearby computing devices via the short-range wireless communications interface, a list of potential access points, wherein each potential access point comprises one of the plurality of access points by which a respective nearby computing device is connected to the network; select one of the potential access points as a target access point, wherein the target access point is different from a home access point to which the wireless communications interface is currently connected; and control the wireless communications interface to roam to the selected target access po
    Type: Application
    Filed: August 5, 2022
    Publication date: February 8, 2024
    Inventors: Darpan Majumder, Venkata Aneel Kumar Inuganti, Mahesh Kumar Edar, Surya Kantha Rao Kandoti, Chiranjeevi Kamakshipalya Hanumanthaiah, Naga Babu Parsi, Kishore Kumar Pathankanur, Mahendiran Balasubramaniyam, HariPrasad Mosuru Chandrasekhar, Phanindra Kumar Gollapudi, Punith Gangadhara
  • Publication number: 20240046238
    Abstract: A computing system (100) that includes at least one microapp (202) and a container application (204) configured to receive an application output from the microapp(s) (202,602) via an application programming interface. The computing system (100) can include at least one processor (112,132) and at least one tangible, non-transitory computer-readable medium that stores instructions that, when executed by the at least one processor (112,132), cause the at least one processor (112,132) to perform operations. The operations can include providing, for display within a first panel (304) in a user interface (306), a navigation bar (302) based on data received from the container application (204); receiving, at the container application (204), the application output from the at least one microapp (202) via the application programming interface; and providing, for display within a second panel in the user interface (306), data describing the application output.
    Type: Application
    Filed: September 19, 2019
    Publication date: February 8, 2024
    Inventors: Kishore Kumar, Yuan Li, Lee Lee Choo, Guibin Kong, Steven Soneff, Joshua Tan, Michael Yeung, Jun Lan, Weijia He, Jiang Sheng, Yichi Zhang, Rama Ranganath, Vivek Agarwal, Cong Liu, Fabian Daniel Schlup, Arjita Madan
  • Publication number: 20240038316
    Abstract: A memory device includes a memory array including wordlines and at least one string of cells. Each cell of the at least one string of cells is addressable by a respective wordline. The memory device further includes control logic, operatively coupled to the memory array, to perform operations including generating gate-induced drain leakage (GIDL) with respect to the at least one string of cells, and causing a grounding voltage to be applied to a set of wordlines to ground each cell of the at least one string of cells addressable by each wordline of the set of wordlines. The grounding voltage applied to the set of wordlines enables transport of positive charge carriers generated by the GIDL. In some embodiments, the positive charge carriers neutralize a buildup of negative charge carriers generated during a seeding phase of a program refresh operation.
    Type: Application
    Filed: July 18, 2023
    Publication date: February 1, 2024
    Inventors: Huai-Yuan Tseng, Eric N. Lee, Akira Goda, Kishore Kumar Muchherla, Tomoharu Tanaka
  • Patent number: 11887651
    Abstract: Devices and techniques for temperature informed memory refresh are described herein. A temperature counter can be updated in response to a memory device write performed under an extreme temperature. Here, the write is performed on a memory device element in the memory device. The memory device element can be sorted above other memory device elements in the memory device based on the temperature counter. Once sorted to the top of these memory device elements, a refresh can be performed the memory device element.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: January 30, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Gianni Stephen Alsasua, Harish Reddy Singidi, Kishore Kumar Muchherla, Sampath Ratnam, Ashutosh Malshe, Vamsi Pavan Rayaprolu, Renato Padilla, Jr.
  • Patent number: 11886336
    Abstract: A system includes a memory device having multiple dice and a processing device operatively coupled to the memory device. The processing device receives a memory operation to program a set of pages of data across at least a subset of the plurality of dice. The processing device partitions the set of pages into a set of partitions and associates a first partition of the set of partitions with a first block family. The processing device assigns the first block family to a first threshold voltage offset bin and stores, in a metadata table, at least one bit to indicate that the set of pages is partitioned.
    Type: Grant
    Filed: January 31, 2023
    Date of Patent: January 30, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Kishore Kumar Muchherla, Karl D. Schuh, Jiangang Wu, Mustafa N. Kaynak, Devin M. Batutis, Xiangang Luo
  • Patent number: 11886726
    Abstract: 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 initialize a block family associated with a memory device; initialize a timeout associated with the block family; initializing a low temperature and a high temperature using a reference temperature at the memory device; responsive to programming a block residing on the memory device, associate the block with the block family; and responsive to at least one of: detecting expiration of the timeout or determining that a difference between the high temperature and the low temperature is greater than or equal to a specified threshold temperature value, close the block family.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: January 30, 2024
    Assignee: Micron Technology, Inc.
    Inventors: Michael Sheperek, Kishore Kumar Muchherla, Mustafa N. Kaynak, Vamsi Pavan Rayaprolu, Bruce A. Liikanen, Peter Feeley, Larry J. Koudele, Shane Nowell, Steven Michael Kientz
  • Publication number: 20240028397
    Abstract: Methods, computer systems, and apparatus, including computer programs encoded on computer storage media, for allocating computation resources for a plurality of databases. For each database, the system identifies a respective initial computation capacity tier for the respective database based at least on the respective utilization of the respective database. For each of a set of optimization orders, the system determines a respective set of candidate resource pools for accommodating the plurality of databases. The system selects an optimization order and determines a final set of resource pools for the plurality of databases. The system outputs data specifying the final set of resource pools.
    Type: Application
    Filed: July 22, 2022
    Publication date: January 25, 2024
    Inventors: Madhan Kumar Srinivasan, Guruprasad PV, Kishore Kumar Gajula
  • Publication number: 20240029815
    Abstract: Methods, systems, and apparatuses include retrieving a defectivity footprint of a portion of memory, the portion of memory composed of multiple blocks. A deck programming order is determined, based on the defectivity footprint, for a current block of the multiple blocks. The current block is composed of multiple decks. The deck programming order is an order in which the multiple decks are programmed. The multiple decks programmed according to the determined deck programming order.
    Type: Application
    Filed: July 25, 2022
    Publication date: January 25, 2024
    Inventors: Kishore Kumar Muchherla, Akira Goda, Dave Scott Ebsen, Lakshmi Kalpana Vakati, Jiangli Zhu, Peter Feeley, Sanjay Subbarao, Vivek Shivhare, Fangfang Zhu
  • Publication number: 20240028259
    Abstract: Methods, systems, and apparatuses include receiving a write command including user data. The write command is directed to a portion of memory including a first block and a second block. A buffer is allocated for executing the write command to the first block. The buffer includes multiple buffer decks and the buffer holds the user data written to the first block. User data is programmed into the first block to a threshold percentage. The threshold percentage is less than one hundred percent of the first block. A buffer deck is invalidated in response to programming the first block to the threshold percentage. The buffer deck is reallocated to the second block for programming the user data into the second block. The buffer deck holds user data written to the second block.
    Type: Application
    Filed: July 21, 2022
    Publication date: January 25, 2024
    Inventors: Kishore Kumar Muchherla, Peter Feeley, Jiangli Zhu, Fangfang Zhu, Akira Goda, Lakshmi Kalpana Vakati, Vivek Shivhare, Dave Scott Ebsen, Sanjay Subbarao
  • Publication number: 20240028252
    Abstract: Exemplary methods, apparatuses, and systems include a quick charge loss (QCL) mitigation manager for controlling writing data bits to a memory device. The QCL mitigation manager receives a first set of data bits for programming to memory. The QCL mitigation manager writes a first subset of data bits of the first set of data bits to a first memory block of the memory during a first pass of programming. The QCL mitigation manager writes a second subset of data bits of the first set of data bits to the first memory block during a second pass of programming in response to determining that the threshold delay is satisfied.
    Type: Application
    Filed: July 25, 2022
    Publication date: January 25, 2024
    Inventors: Kishore Kumar Muchherla, Dung V. Nguyen, Dave Scott Ebsen, Tomoharu Tanaka, James Fitzpatrick, Huai-Yuan Tseng, Akira Goda, Eric N. Lee
  • Publication number: 20240028200
    Abstract: A memory device includes an array of memory cells and a controller configured to access the array of memory cells. The controller is further configured to program a first number of bits to a first memory cell of the array of memory cells and program a second number of bits to a second memory cell of the array of memory cells. The controller is further configured to following a period after programming the second number of bits to the second memory cell, merge at least a subset of the first number of bits stored in the first memory cell to the second number of bits stored in the second memory cell without erasing the second memory cell such that the second number of bits plus at least the subset of the first number of bits are stored in the second memory cell.
    Type: Application
    Filed: July 25, 2022
    Publication date: January 25, 2024
    Applicant: MICRON TECHNOLOGY, INC.
    Inventors: Tomoharu Tanaka, Huai-Yuan Tseng, Dung V. Nguyen, Kishore Kumar Muchherla, Eric N. Lee, Akira Goda, James Fitzpatrick, Dave Ebsen