Patents by Inventor Kranthi Kumar Vaidyula

Kranthi Kumar Vaidyula 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: 20240170052
    Abstract: Methods, systems, and devices for reducing charge migration in a memory system are described. The memory system may receive a command to program a first set of memory cells with first data. The memory system may generate a scrambling seed to scramble the first data. Before programming the scrambled data, the memory system may compare a first set of states in the scrambled data with a second set of states in second data to determine an aggregate difference between the sets of states. If the aggregate difference is less than a threshold, the memory system may program the first set of memory cells with the first data. If the aggregate difference is greater than a threshold, the memory system may generate a new scrambling seed to rescramble the first data and determine a new aggregate difference by comparing states of the rescrambled data to the states of the second data.
    Type: Application
    Filed: November 21, 2023
    Publication date: May 23, 2024
    Inventors: Amiya Banerjee, Kranthi Kumar Vaidyula, Jameer Mulani
  • Publication number: 20240053916
    Abstract: Methods, systems, and devices for resuming write operation after suspension are described. A memory system may be configured to determine an upper limit of a threshold voltage of a page of a block at which a performance of a write operation was suspended based at least in part on an indication to resume the performance of the write operation that was previously suspended at a memory system; determine a difference between a first quantity of a first logic state stored in the page and a second quantity of the first logic state associated with an unsuspended write operation based at least in part on determining the upper limit of the threshold voltage; and resume the performance of the write operation based at least in part on determining the difference between the first quantity of the first logic state and the second quantity of the first logic state.
    Type: Application
    Filed: August 9, 2022
    Publication date: February 15, 2024
    Inventors: Amiya Banerjee, Kranthi Kumar Vaidyula, Shreesha Prabhu
  • Patent number: 11315637
    Abstract: Aspects of a storage device including a memory and controller are provided which allow for erase voltages applied during erase operations to be adaptively changed at elevated temperatures to reduce erase time and prevent erase failures. In response to detecting a lower temperature of the memory, the controller applies a first erase voltage to cells in a block of a die, and in response to detecting a higher temperature of the memory, the controller applies a second erase voltage larger than the first erase voltage to the cells in the block of the die. The controller may apply the different erase voltages depending on whether the temperature of the die falls within respective temperature ranges or meets a respective temperature threshold, which may change for different dies. As a result, successful erase operations at higher temperatures may be achieved.
    Type: Grant
    Filed: June 3, 2020
    Date of Patent: April 26, 2022
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Kranthi Kumar Vaidyula, Amiya Banerjee, Phani Raghavendra Yasasvi Gangavarapu
  • Publication number: 20210383873
    Abstract: Aspects of a storage device including a memory and controller are provided which allow for erase voltages applied during erase operations to be adaptively changed at elevated temperatures to reduce erase time and prevent erase failures. In response to detecting a lower temperature of the memory, the controller applies a first erase voltage to cells in a block of a die, and in response to detecting a higher temperature of the memory, the controller applies a second erase voltage larger than the first erase voltage to the cells in the block of the die. The controller may apply the different erase voltages depending on whether the temperature of the die falls within respective temperature ranges or meets a respective temperature threshold, which may change for different dies. As a result, successful erase operations at higher temperatures may be achieved.
    Type: Application
    Filed: June 3, 2020
    Publication date: December 9, 2021
    Inventors: Kranthi Kumar Vaidyula, Amiya Banerjee, Phani Raghavendra Yasasvi Gangavarapu