- 专利标题: Data storage device and method for host-initiated cached read to recover corrupted data within timeout constraints
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申请号: US17313793申请日: 2021-05-06
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公开(公告)号: US11650758B2公开(公告)日: 2023-05-16
- 发明人: Dattatreya Nayak , Arun Kumar Shukla , Akash Dungrani
- 申请人: Western Digital Technologies, Inc.
- 申请人地址: US CA San Jose
- 专利权人: Western Digital Technologies, Inc.
- 当前专利权人: Western Digital Technologies, Inc.
- 当前专利权人地址: US CA San Jose
- 代理机构: Crowell & Moring LLP
- 主分类号: G06F3/06
- IPC分类号: G06F3/06 ; G06F12/0802
摘要:
A data storage device and method for host-initiated cached read to recover corrupted data within timeout constraints are provided. In one embodiment, a data storage device is provided comprising a volatile memory, a non-volatile memory, and a controller. The controller is configured to receive a read look-ahead command from a host to perform a read look-ahead of a first logical address; receive a read command from the host to read a second logical address; and execute the read look-ahead command by performing the following as background operations while executing the read command: read data for a location in the non-volatile memory that corresponds to the first logical address; correct an error in the data; and cache the corrected data in the volatile memory. The cached corrected data can be sent back to the host in response to the host requesting a read of the same logical address. Other embodiments are provided.
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