Patents by Inventor Andrew J. Louder

Andrew J. Louder 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).

  • Providing additional parity for non-standard sized parity data sets
    Patent number: 11138069
    Abstract: Apparatus and method for storing data in a non-volatile memory (NVM), such as a flash memory in a solid-state drive (SSD). In some embodiments, a distributed storage space of the NVM is defined to extend across a plural number of regions of the NVM. A non-standard parity data set is provided having a plural number of data elements greater than or equal to the plural number of regions in the storage space. The data set is written by storing a first portion of the data elements and a first parity value to the plural number of regions and a remaining portion of the data elements and a second parity value to a subset of the plural number of regions. The regions can comprise semiconductor dies in a flash memory, and the distributed storage space can be a garbage collection unit formed using one erasure block from each flash die.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: October 5, 2021
    Assignee: Seagate Technology, LLC
    Inventors: Stephen H. Perlmutter, Steven S. Williams, Benjamin J. Scott, Andrew J. Louder, Kyumsung Lee, Robert W. Dixon
  • PROVIDING ADDITIONAL PARITY FOR NON-STANDARD SIZED PARITY DATA SETS
    Publication number: 20190377633
    Abstract: Apparatus and method for storing data in a non-volatile memory (NVM), such as a flash memory in a solid-state drive (SSD). In some embodiments, a distributed storage space of the NVM is defined to extend across a plural number of regions of the NVM. A non-standard parity data set is provided having a plural number of data elements greater than or equal to the plural number of regions in the storage space. The data set is written by storing a first portion of the data elements and a first parity value to the plural number of regions and a remaining portion of the data elements and a second parity value to a subset of the plural number of regions. The regions can comprise semiconductor dies in a flash memory, and the distributed storage space can be a garbage collection unit formed using one erasure block from each flash die.
    Type: Application
    Filed: December 6, 2018
    Publication date: December 12, 2019
    Inventors: Stephen H. Perlmutter, Steven S. Williams, Benjamin J. Scott, Andrew J. Louder, Kyumsung Lee, Robert W. Dixon