Patents by Inventor David Scott Seekins

David Scott Seekins 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: 9411717
    Abstract: Method and apparatus for managing a memory, such as but not limited to a flash memory. In accordance with some embodiments, user data and associated metadata are stored in a memory. The metadata are arranged as a first sequence of snapshots of the metadata at different points in time during the operation of the memory, and a second sequence of intervening journals which reflect updates to the metadata from one snapshot to the next. Requested portions of the metadata are recovered from the memory using a selected snapshot in the first sequence and first and second journals in the second sequence.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: August 9, 2016
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Patent number: 9164830
    Abstract: A first data set is written to first memory units identified as having a higher data reliability and a second data set is written to second memory units identified as having a lower data reliability than the first memory units. In some cases, the second data set may include metadata or redundancy information that is useful to aid in reading and/or decoding the first data set. The act of writing the second data set increases the data reliability of the first data set. The second data set may be a null pattern, such as all erased bits.
    Type: Grant
    Filed: January 14, 2014
    Date of Patent: October 20, 2015
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Navneeth Kankani, Mark Allen Gaertner, Rodney Virgil Bowman, Ryan James Goss, David Scott Seekins, Tong Shirh Stone
  • Patent number: 9122593
    Abstract: Method and apparatus for managing a memory, such as but not limited to a flash memory. In accordance with some embodiments, initial state information is stored which identifies an actual state of a garbage collection unit (GCU) of a memory during a normal operational mode. During a restoration mode after a memory power cycle event, a virtualized state of the GCU is determined responsive to the initial state information and to data read from the GCU. The memory is transitioned from the restoration mode to the normal operational mode once the virtualized state for the GCU is determined.
    Type: Grant
    Filed: January 19, 2015
    Date of Patent: September 1, 2015
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Patent number: 9058281
    Abstract: A tiered memory system includes a memory controller for a primary memory and a secondary memory, where the secondary memory is used as a cache for the primary memory. The memory controller is configured to cause redundant data that is stored in the primary memory of the memory system to be stored in first memory locations of the secondary memory. The controller causes data that is not stored in the primary memory to be stored in second memory locations of the secondary memory. The second memory locations have at least one of lower bit error rate and higher access speed than the first memory locations.
    Type: Grant
    Filed: June 1, 2012
    Date of Patent: June 16, 2015
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Publication number: 20150143039
    Abstract: Method and apparatus for managing a memory, such as but not limited to a flash memory. In accordance with some embodiments, initial state information is stored which identifies an actual state of a garbage collection unit (GCU) of a memory during a normal operational mode. During a restoration mode after a memory power cycle event, a virtualized state of the GCU is determined responsive to the initial state information and to data read from the GCU. The memory is transitioned from the restoration mode to the normal operational mode once the virtualized state for the GCU is determined.
    Type: Application
    Filed: January 19, 2015
    Publication date: May 21, 2015
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Patent number: 8954689
    Abstract: A first cumulative data transfer over a first time window from an intermediary module to a data storage media is determined. The intermediary module is coupled between a host interface and the data storage media. An activity rate from the intermediary module to the data storage media is limited for one or more subsequent time windows if the first cumulative activity rate exceeds a threshold value that impacts life of the data storage media. The limitation of the activity rate is removed after the one or more subsequent time windows expire.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: February 10, 2015
    Assignee: Seagate Technology LLC
    Inventors: David Scott Seekins, Ryan James Goss, Kristofer Carlson Conklin
  • Patent number: 8938597
    Abstract: Method and apparatus for managing a memory, such as but not limited to a flash memory. In accordance with some embodiments, initial state information is stored which identifies an actual state of a garbage collection unit (GCU) of a memory during a normal operational mode. During a restoration mode after a memory power cycle event, a virtualized state of the GCU is determined responsive to the initial state information and to data read from the GCU. The memory is transitioned from the restoration mode to the normal operational mode once the virtualized state for the GCU is determined.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: January 20, 2015
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Patent number: 8930612
    Abstract: Apparatus and method for data management in a memory, such as but not limited to a flash memory array. In accordance with some embodiments, a plurality of data sets in a memory are identified as having a common data content and different physical addresses in the memory. A selected one of the data sets is marked as valid data and the remaining data sets are marked as stale data responsive to evaluation of at least one variable parameter associated with the physical addresses at which the data sets are respectively stored.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: January 6, 2015
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, Mark Allen Gaertner, David Scott Seekins
  • Patent number: 8923045
    Abstract: Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with some embodiments, a first block of data is written to a group of memory cells at a first memory location in single-level cell (SLC) mode. The first block of data is copied from the first memory location to a group of memory cells at a second memory location to provide a backup copy of the first block of data during a protected mode of operation. A second block of data is subsequently overwritten to the group of memory cells at the first memory location so that the first memory location stores both the first and second blocks of data in multi-level cell (MLC) mode.
    Type: Grant
    Filed: May 31, 2012
    Date of Patent: December 30, 2014
    Assignee: Seagate technology LLC
    Inventors: Ryan James Goss, Mark Allen Gaertner, David Scott Seekins
  • Patent number: 8909888
    Abstract: Method and apparatus for securely erasing data from a non-volatile memory, such as but not limited to a flash memory array. In accordance with various embodiments, an extended data set to be sanitized from the memory is identified. The extended data set includes multiple copies of data having a common logical address and different physical addresses within the memory. The extended data set is sanitized in relation to a characterization of the data set. The data sanitizing operation results in the extended data set being purged from the memory and other previously stored data in the memory being retained.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: December 9, 2014
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins, Jonathan W. Haines, Timothy R. Feldman
  • Patent number: 8832402
    Abstract: Method and apparatus for self-initiated secure erasure of data from a non-volatile memory, such as a solid state drive (SSD). In accordance with various embodiments, the memory is operated in communication with a host device. A self-initiated, non-destructive secure erasure of the data stored in the memory is carried out responsive to a detection of an unauthorized power down event associated with the memory.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: September 9, 2014
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins
  • Patent number: 8811074
    Abstract: Method and apparatus for managing data in a memory, such as a flash memory array. In accordance with various embodiments, data are stored in a first location in a memory, and read from the first location a selected number of times. At least one parameter associated with the first location is measured after the data are read the selected number of times. The data are thereafter migrated to a second location in the memory responsive to the measured parameter indicating a presence of read disturbance in the data in the first location.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: August 19, 2014
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Patent number: 8806106
    Abstract: Completion times of data storage operations targeted to a non-volatile, solid-state memory device are measured. Wear of the memory device is estimated using the measured completion times, and life cycle management operations are performed to affect subsequent wear of the memory device in accordance with the estimated wear. The life cycle management may include operations such as wear leveling, predicting an end of service life of the memory device, and removing worn blocks of the memory device from service.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: August 12, 2014
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins, David Scott Ebsen, Navneeth Kankani
  • Publication number: 20140129891
    Abstract: A first data set is written to first memory units identified as having a higher data reliability and a second data set is written to second memory units identified as having a lower data reliability than the first memory units. In some cases, the second data set may include metadata or redundancy information that is useful to aid in reading and/or decoding the first data set. The act of writing the second data set increases the data reliability of the first data set. The second data set may be a null pattern, such as all erased bits.
    Type: Application
    Filed: January 14, 2014
    Publication date: May 8, 2014
    Applicant: Seagate Technology LLC
    Inventors: Navneeth Kankani, Mark Allen Gaertner, Rodney Virgil Bowman, Ryan James Goss, David Scott Seekins, Tong Shirh Stone
  • Publication number: 20140115233
    Abstract: Method and apparatus for managing a memory, such as but not limited to a flash memory. In accordance with some embodiments, initial state information is stored which identifies an actual state of a garbage collection unit (GCU) of a memory during a normal operational mode. During a restoration mode after a memory power cycle event, a virtualized state of the GCU is determined responsive to the initial state information and to data read from the GCU. The memory is transitioned from the restoration mode to the normal operational mode once the virtualized state for the GCU is determined.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Publication number: 20140115232
    Abstract: Method and apparatus for managing a memory, such as but not limited to a flash memory. In accordance with some embodiments, user data and associated metadata are stored in a memory. The metadata are arranged as a first sequence of snapshots of the metadata at different points in time during the operation of the memory, and a second sequence of intervening journals which reflect updates to the metadata from one snapshot to the next. Requested portions of the metadata are recovered from the memory using a selected snapshot in the first sequence and first and second journals in the second sequence.
    Type: Application
    Filed: October 23, 2012
    Publication date: April 24, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Patent number: 8705291
    Abstract: Method and apparatus for sanitizing a non-volatile memory, such as a flash memory array. In accordance with various embodiments, a memory cell is sanitized by using a write circuit to accumulate charge on a floating gate of the cell to a level such that application of a maximum available read sensing voltage to a control gate of the cell is insufficient to place the cell in a conductive state.
    Type: Grant
    Filed: May 27, 2011
    Date of Patent: April 22, 2014
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins, Navneeth Kankani
  • Publication number: 20140052897
    Abstract: Method and apparatus for managing data in a memory, such as but not limited to a flash memory. In accordance with some embodiments, a memory is provided with a plurality of addressable data storage blocks which are arranged into a first set of garbage collection units (GCUs). The blocks are rearranged into a different, second set of GCUs responsive to parametric performance of the blocks.
    Type: Application
    Filed: August 17, 2012
    Publication date: February 20, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Ryan James Goss, Mark Allen Gaertner, David Scott Seekins
  • Patent number: 8645773
    Abstract: Representative locations of a non-volatile, solid-state memory of an apparatus store characterization data. An event during which elapsed time is not measured by the apparatus is determined. In response to the event, temporal degradation of the non-volatile, solid-state memory during the event is estimated based on electrical characteristics of the representative locations.
    Type: Grant
    Filed: June 30, 2011
    Date of Patent: February 4, 2014
    Assignee: Seagate Technology LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner
  • Publication number: 20130326114
    Abstract: Apparatus and method for data management in a memory, such as but not limited to a flash memory array. In accordance with some embodiments, a first hash value associated with a first set of data stored in a memory is compared to a second hash value associated with a second set of data pending storage to the memory. The second set of data is stored in the memory responsive to a mismatch between the first and second hash values.
    Type: Application
    Filed: May 30, 2012
    Publication date: December 5, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Ryan James Goss, David Scott Seekins, Mark Allen Gaertner