Patents by Inventor GOPU S

GOPU S 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: 11557334
    Abstract: An apparatus includes control circuits configured to connect to a plurality of non-volatile memory cells. Each non-volatile memory cell is configured to store a plurality of bits of a plurality of logical pages including at least a first bit of a first logical page, a second bit of a second logical page and a third bit of a third logical page. The control circuits are configured to select a subset of the plurality of logical pages for reading, perform pre-read steps, and read a first and at least a second selected logical page of the subset without performing pre-read steps between reading the first and second selected logical pages.
    Type: Grant
    Filed: May 5, 2021
    Date of Patent: January 17, 2023
    Assignee: SanDisk Technologies LLC
    Inventors: Subin CP, Gopu S, Sainath Viswasarai
  • Publication number: 20220358995
    Abstract: An apparatus includes control circuits configured to connect to a plurality of non-volatile memory cells. Each non-volatile memory cell is configured to store a plurality of bits of a plurality of logical pages including at least a first bit of a first logical page, a second bit of a second logical page and a third bit of a third logical page. The control circuits are configured to select a subset of the plurality of logical pages for reading, perform pre-read steps, and read a first and at least a second selected logical page of the subset without performing pre-read steps between reading the first and second selected logical pages.
    Type: Application
    Filed: May 5, 2021
    Publication date: November 10, 2022
    Applicant: SanDisk Technologies LLC
    Inventors: Subin CP, Gopu S, Sainath Viswasarai
  • Patent number: 10643710
    Abstract: Apparatuses, systems, methods, and computer program products for enhanced erase retry of a non-volatile storage device are disclosed. An apparatus includes a non-volatile storage device and a controller. A controller includes a verification component configured to detect that an erase operation performed on an erase block of a non-volatile storage device is unsuccessful. A controller includes a parameter component configured to adjust one or more erase parameters for an erase operation. One or more erase parameters may be associated with one or more select gate drain storage cells of an erase block. A controller includes an erase component configured to retry an erase operation on an erase block with one or more adjusted erase parameters.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 5, 2020
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Divya Prasad, Sainath Viswasarai, Gopu S, Swaroop Kaza, Piyush Anil Dhotre, Chittoor Devarajan Sunilkumar
  • Patent number: 10629247
    Abstract: Apparatuses, systems, and methods are disclosed for read threshold adjustment using reference data for non-volatile memory. An apparatus may include an array of non-volatile memory cells and a controller. A controller may be configured to write a predetermined reference data pattern to a region of an array. A controller may be configured to read reference data from a region. A controller may be configured to set one or more read thresholds based on identifying differences between reference data and a predetermined reference data pattern.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: April 21, 2020
    Assignee: WESTERN DIGITAL TECHNOLOGIES, INC.
    Inventors: Salil Kale, Shreejith Kv, Aneesh Puthoor, Gopu S, Narayan K
  • Publication number: 20190198069
    Abstract: Apparatuses, systems, and methods are disclosed for read threshold adjustment using reference data for non-volatile memory. An apparatus may include an array of non-volatile memory cells and a controller. A controller may be configured to write a predetermined reference data pattern to a region of an array. A controller may be configured to read reference data from a region. A controller may be configured to set one or more read thresholds based on identifying differences between reference data and a predetermined reference data pattern.
    Type: Application
    Filed: December 21, 2017
    Publication date: June 27, 2019
    Applicant: Western Digital Technologies, Inc.
    Inventors: SALIL KALE, SHREEJITH KV, ANEESH PUTHOOR, GOPU S, NARAYAN K
  • Publication number: 20190164614
    Abstract: Apparatuses, systems, methods, and computer program products for enhanced erase retry of a non-volatile storage device are disclosed. An apparatus includes a non-volatile storage device and a controller. A controller includes a verification component configured to detect that an erase operation performed on an erase block of a non-volatile storage device is unsuccessful. A controller includes a parameter component configured to adjust one or more erase parameters for an erase operation. One or more erase parameters may be associated with one or more select gate drain storage cells of an erase block. A controller includes an erase component configured to retry an erase operation on an erase block with one or more adjusted erase parameters.
    Type: Application
    Filed: November 30, 2017
    Publication date: May 30, 2019
    Applicant: Western Digital Technologies, Inc.
    Inventors: DIVYA PRASAD, SAINATH VISWASARAI, GOPU S, SWAROOP KAZA, PIYUSH ANIL DHOTRE, CHITTOOR DEVARAJAN SUNILKUMAR