公开(公告)号：US20220035718A1

公开(公告)日：2022-02-03

申请号：US16944039

申请日：2020-07-30

Applicant: Seagate Technology LLC

Inventor： Deepak SRIDHARA ,  Jason BELLORADO ,  Ara PATAPOUTIAN ,  Marcus MARROW

IPC: G06F11/14 ,  G06F11/07 ,  G06F3/06

Abstract: An error recovery process provides for selecting a first recovery scheme for a decoding attempt on a first subset of a set of failed data blocks read from a data track; selecting a second different recovery scheme for a decoding attempt on a second subset of the set of failed data blocks read from the data track; and during a single revolution of the data track, performing operations to decode a first subset of the failed data blocks according to the first recovery scheme operations to decode the second subset of the failed data blocks according to the second different recovery scheme.

公开(公告)号：US20220231706A1

公开(公告)日：2022-07-21

申请号：US17150861

申请日：2021-01-15

Applicant: Seagate Technology LLC

Inventor： Zheng WANG ,  Ara PATAPOUTIAN

IPC: H03M13/39 ,  H03M13/11 ,  H03M13/15 ,  G11C16/34 ,  G11C16/30 ,  G06N20/00

Abstract: Estimation of read parameters for a read channel of a solid-state storage device using a machine learning apparatus. The machine learning apparatus may be provided with signal count metrics from multiple regions of the memory cell signal space and syndrome weights from an error correction code. Other inputs may also be provided comprising metrics of the memory or read operations. In an example, the read parameters may include one or more reference threshold voltage values for read voltages applied to a memory cell and/or log-likelihood ratio (LLR) values for the memory cell.

公开(公告)号：US20210399746A1

公开(公告)日：2021-12-23

申请号：US16908593

申请日：2020-06-22

Applicant: Seagate Technology LLC

Inventor： Deepak SRIDHARA ,  Jason BELLORADO ,  Ara PATAPOUTIAN ,  Marcus MARROW

IPC: H03M13/29

Abstract: In one implementation, the disclosure provides a decoding system that concurrently executes a read sample combining recovery process and an iterative outer code (IOC) recovery process. Performing the read sample combining recovery process entails executing multiple rounds of logic that each provide for combining together different data samples read from a data block. The IOC recovery process is performed at least partially concurrent with the read sample combining recovery process and each round of the IOC recovery process is based on newly-updated data samples generated by the read sample combining recovery process.