Invention Grant
- Patent Title: System and method for adjusting read levels in a storage device based on bias functions
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Application No.: US15849572Application Date: 2017-12-20
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Publication No.: US10580485B2Publication Date: 2020-03-03
- Inventor: Dudy Avraham , Alexander Bazarsky , Tomer Tzvi Eliash , David Rozman , Eran Sharon , Arthur Shulkin
- 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: Morgan, Lewis & Bockius LLP
- Main IPC: G11C11/56
- IPC: G11C11/56 ; G11C16/28 ; G11C16/34 ; G11C16/04 ; G11C16/08 ; G11C8/08 ; G11C29/02 ; G11C7/04

Abstract:
Disclosed is a system and method for adjusting read levels in a storage device based on bias functions. The method includes receiving a request to perform a memory access operation on a wordline of non-volatile memory. The method also includes selecting a bias function corresponding to the wordline of the non-volatile memory from a group of bias functions. The method also includes determining a bias value based on the selected bias function and the wordline. The method also includes adjusting a read level in the non-volatile memory based on the bias value. The method also includes performing the memory access operation on the wordline of the non-volatile memory using the adjusted read level. The bias functions may be linear functions and adjusted in response to detecting a recalibration condition.
Public/Granted literature
- US20190189202A1 SYSTEM AND METHOD FOR ADJUSTING READ LEVELS IN A STORAGE DEVICE BASED ON BIAS FUNCTIONS Public/Granted day:2019-06-20
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