Invention Grant
- Patent Title: Uncorrectable error correction code (UECC) recovery time improvement
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Application No.: US16585503Application Date: 2019-09-27
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Publication No.: US11036582B2Publication Date: 2021-06-15
- Inventor: Raghavendra Gopalakrishnan , Bhanushankar Doni , Manohar Srinivasaiah
- Applicant: Western Digital Technologies, Inc.
- Applicant Address: US CA San Jose
- Assignee: Western Digital Technologies, Inc.
- Current Assignee: Western Digital Technologies, Inc.
- Current Assignee Address: US CA San Jose
- Agency: Vierra Magen Marcus LLP
- Main IPC: G06F11/10
- IPC: G06F11/10 ; G11C16/10 ; G11C11/56 ; G11C16/26 ; G11C16/04

Abstract:
An apparatus comprising non-volatile memory is configured to access a selected unit of encoded SLC data in the non-volatile memory during a first programming phase of a process of folding data stored at a single bit per memory cell to data stored at multiple bits per memory cell. The apparatus recovers the selected unit of SLC data based on redundancy data formed from units of SLC data that data include the selected unit of SLC data. The apparatus saves the recovered selected unit of SLC data to memory. The apparatus uses the saved recovered unit of SLC data during a second programming phase of folding the data stored at a single bit per memory cell to the data stored at multiple bits per memory cell, thereby saving considerable time in not having to again recover the SLC data using the redundancy data.
Public/Granted literature
- US20210096948A1 UNCORRECTABLE ERROR CORRECTION CODE (UECC) RECOVERY TIME IMPROVEMENT Public/Granted day:2021-04-01
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