发明授权
- 专利标题: Method and system of reading threshold voltage equalization
- 专利标题(中): 读取阈值电压均衡的方法和系统
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申请号: US13831697申请日: 2013-03-15
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公开(公告)号: US09454420B1公开(公告)日: 2016-09-27
- 发明人: Ying Yu Tai , Seungjune Jeon , Jinagli Zhu , Yeuh Yale Ma
- 申请人: SanDisk Enterprise IP LLC
- 申请人地址: US TX Plano
- 专利权人: SANDISK TECHNOLOGIES LLC
- 当前专利权人: SANDISK TECHNOLOGIES LLC
- 当前专利权人地址: US TX Plano
- 代理机构: Morgan, Lewis & Bockius LLP
- 主分类号: G06F11/08
- IPC分类号: G06F11/08 ; G06F11/07 ; G11C16/34 ; G06F11/10 ; G11C16/26
摘要:
The various implementations described herein include systems, methods and/or devices that may enhance the reliability with which data can be stored in and read from a memory. The method includes, in response to one or more host read commands, reading data from a set of memory cells in a flash memory array in accordance with a first reading threshold voltage and performing an error correction process on the read data to produce error correction information. The method further includes determining, based on the error correction information, whether to adjust the first reading threshold voltage, and upon determining to adjust the first reading threshold voltage, setting the value of the first reading threshold voltage to a value greater or less than a current value of the first reading threshold voltage. In some implementations, the method further includes initiating a recalibration of the first reading threshold voltage when a predefined condition occurs.
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