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    Multiple detector data channel and data detection utilizing different cost functions
    41.
    发明授权
    Multiple detector data channel and data detection utilizing different cost functions 有权

    公开(公告)号：US11223447B1

    公开(公告)日：2022-01-11

    申请号：US17219444

    申请日：2021-03-31

    Applicant: Seagate Technology LLC

    Inventor： Mehmet Fatih Erden ,  Walter R. Eppler

    IPC: H04L1/00 ,  H04L25/03

    Abstract: Systems and methods are disclosed for a multiple detector data channel and data detection utilizing different cost functions. For example, a digital data channel system can have multiple data detectors where each data detector implements a distinct cost function for detecting data. A cost function analyzer can then selectively choose decisions from the multiple data detectors to generate a data sequence. In some examples, a dual detector system may have one detector implement a Soft-Output Viterbi Algorithm (SOVA) cost function and another detector implement a peak detection algorithm. Further, in some embodiments, the cost function analyzer can implement multiple selection criteria to determine which decisions to include in a data sequence from the multiple data detectors.

    DISTRIBUTED DATA SECURITY
    42.
    发明申请
    DISTRIBUTED DATA SECURITY 有权

    公开(公告)号：US20210342458A1

    公开(公告)日：2021-11-04

    申请号：US17378240

    申请日：2021-07-16

    Applicant: Seagate Technology LLC

    Inventor： Mehmet Fatih Erden

    IPC: G06F21/60 ,  H04L9/08

    Abstract: A method includes partitioning a received data chunk into first and second data sectors to be stored in respective first and second store units. The method also includes generating first and second random keys. The method further includes encrypting the first data sector with the second random key, and encrypting the second data sector with the first random key. The first and second random keys are encoded with channel codes. Thereafter, the first encoded random key is appended to the first encrypted data sector to obtain first appended data, and the second encoded random key is appended to the second encrypted data sector to obtain second appended data.

    Multi-actuator data storage system
    46.
    发明授权
    Multi-actuator data storage system 有权

    公开(公告)号：US10818317B1

    公开(公告)日：2020-10-27

    申请号：US16459765

    申请日：2019-07-02

    Applicant: Seagate Technology LLC

    Inventor： Mehmet Fatih Erden ,  Steven Douglas Granz

    IPC: G11B5/09 ,  G11B5/596 ,  G11B5/48 ,  G11B19/04 ,  G11B5/60 ,  G11B5/00

    Abstract: A data storage device includes a data storage medium having a data storage surface. The data storage device also includes a first actuator having a first attached slider with a writer configured to write data on the data storage surface. The writer has a media-confronting surface covered by a first non-magnetic overcoat having a first thickness. The data storage device further includes a second actuator having a second attached slider with at least one user-data reader configured to read user data from the data storage surface and no writer for writing data on the data storage surface. The at least one user-data reader has a media-confronting surface covered by a second non-magnetic overcoat having a second thickness that is less than the first thickness of the first non-magnetic overcoat.

    Determining redundancy in transformed sensor data
    47.
    发明授权
    Determining redundancy in transformed sensor data 有权

    公开(公告)号：US10701363B2

    公开(公告)日：2020-06-30

    申请号：US16189018

    申请日：2018-11-13

    Applicant: Seagate Technology LLC

    Inventor： Mehmet Fatih Erden

    IPC: H04N5/92 ,  H04N5/93 ,  H04N19/137 ,  H04N5/917 ,  H04N19/169 ,  H04N19/63 ,  H04N5/94 ,  H04N9/88 ,  H04N5/84 ,  H04N5/89

    Abstract: Two or more video signals are received at respective two or more peer-level storage nodes. Discrete wavelet transformations are performed on the two or more video signals via the two or more peer-level storage nodes. Temporally stationary background data is determined from the discrete wavelet transformations at each of the two or more peer-level storage nodes. Redundancies are determined using the temporally stationary background data, the redundancies indicating an overlap between the two or more video signals. A storage size of two or more video signals is reduced by not storing the redundancies on at least one of the peer-level storage nodes.

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