Patents by Inventor Andrew Louder

Andrew 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).

  • Staggered garbage collection unit (GCU) allocation across dies
    Patent number: 11334481
    Abstract: Apparatus and method for managing a non-volatile memory (NVM) such as a flash memory in a solid-state drive (SSD). In some embodiments, the NVM is arranged as a plurality of semiconductor memory dies coupled to a controller circuit using a plurality of channels. The controller circuit divides the plurality of dies into a succession of garbage collection units (GCUs). Each GCU is independently erasable and allocatable for storage of user data. The GCUs are staggered so that each GCU is formed from a different subset of the dies in the NVM. In further embodiments, the dies are arranged into NVM sets in accordance with the NVMe (Non-Volatile Memory Express) specification with each NVM set addressable by a different user for storage of data in a separate set of staggered GCUs.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: May 17, 2022
    Inventors: Stephen H. Perlmutter, Stacey Secatch, Andrew Louder
  • STAGGERED GARBAGE COLLECTION UNIT (GCU) ALLOCATION ACROSS DIES
    Publication number: 20200379903
    Abstract: Apparatus and method for managing a non-volatile memory (NVM) such as a flash memory in a solid-state drive (SSD). In some embodiments, the NVM is arranged as a plurality of semiconductor memory dies coupled to a controller circuit using a plurality of channels. The controller circuit divides the plurality of dies into a succession of garbage collection units (GCUs). Each GCU is independently erasable and allocatable for storage of user data. The GCUs are staggered so that each GCU is formed from a different subset of the dies in the NVM. In further embodiments, the dies are arranged into NVM sets in accordance with the NVMe (Non-Volatile Memory Express) specification with each NVM set addressable by a different user for storage of data in a separate set of staggered GCUs.
    Type: Application
    Filed: August 18, 2020
    Publication date: December 3, 2020
    Inventors: Stephen H. Perlmutter, Stacey Secatch, Andrew Louder
  • Staggered garbage collection unit (GCU) allocation across dies
    Patent number: 10747662
    Abstract: Apparatus and method for managing a non-volatile memory (NVM) such as a flash memory in a solid-state drive (SSD). In some embodiments, the NVM is arranged as a plurality of semiconductor memory dies coupled to a controller circuit using a plurality of channels. The controller circuit divides the plurality of dies into a succession of garbage collection units (GCUs). Each GCU is independently erasable and allocatable for storage of user data. The GCUs are staggered so that each GCU is formed from a different subset of the dies in the NVM. In further embodiments, the dies are arranged into NVM sets in accordance with the NVMe (Non-Volatile Memory Express) specification with each NVM set addressable by a different user for storage of data in a separate set of staggered GCUs.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: August 18, 2020
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Stephen H. Perlmutter, Stacey Secatch, Andrew Louder
  • STAGGERED GARBAGE COLLECTION UNIT (GCU) ALLOCATION ACROSS DIES
    Publication number: 20200004676
    Abstract: Apparatus and method for managing a non-volatile memory (NVM) such as a flash memory in a solid-state drive (SSD). In some embodiments, the NVM is arranged as a plurality of semiconductor memory dies coupled to a controller circuit using a plurality of channels. The controller circuit divides the plurality of dies into a succession of garbage collection units (GCUs). Each GCU is independently erasable and allocatable for storage of user data. The GCUs are staggered so that each GCU is formed from a different subset of the dies in the NVM. In further embodiments, the dies are arranged into NVM sets in accordance with the NVMe (Non-Volatile Memory Express) specification with each NVM set addressable by a different user for storage of data in a separate set of staggered GCUs.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 2, 2020
    Inventors: Stephen H. Perlmutter, Stacey Secatch, Andrew Louder