Invention Grant
US09007842B2 Retention detection and/or channel tracking policy in a flash memory based storage system
有权
基于闪存存储系统的保留检测和/或信道跟踪策略
- Patent Title: Retention detection and/or channel tracking policy in a flash memory based storage system
- Patent Title (中): 基于闪存存储系统的保留检测和/或信道跟踪策略
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Application No.: US13832633Application Date: 2013-03-15
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Publication No.: US09007842B2Publication Date: 2015-04-14
- Inventor: Zhengang Chen , Jeremy Werner , Ying Quan Wu , Erich F. Haratsch
- Applicant: Seagate Technology LLC
- Applicant Address: US CA Cupertino
- Assignee: Seagate Technology LLC
- Current Assignee: Seagate Technology LLC
- Current Assignee Address: US CA Cupertino
- Agent Christopher P. Maiorana, PC
- Main IPC: G11C11/34
- IPC: G11C11/34 ; G11C16/10
Abstract:
A method for determining a retention time in a solid state device (SSD), comprising the steps of providing a plurality of write operations to a memory, determining a reference voltage for each of the write operations, determining a difference between (i) the reference voltage after each of the write operations and (ii) a target reference voltage and if the difference is above a predetermined value, generating a flag indicating an excessive retention has occurred.
Public/Granted literature
- US20140269048A1 RETENTION DETECTION AND/OR CHANNEL TRACKING POLICY IN A FLASH MEMORY BASED STORAGE SYSTEM Public/Granted day:2014-09-18
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