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2. 发明申请

WO2011002657A1 METHOD AND DEVICE FOR SELECTIVELY REFRESHING A REGION OF A MEMORY OF A DATA STORAGE DEVICE 审中-公开
标题翻译：用于选择性地刷新数据存储设备的存储器的区域的方法和设备
公开(公告)号：WO2011002657A1
公开(公告)日：2011-01-06
申请号：PCT/US2010/039708
申请日：2010-06-23
申请人： SANDISK CORPORATION , D'ABREU, Manuel, Antonio , SKALA, Stephen
发明人： D'ABREU, Manuel, Antonio , SKALA, Stephen
IPC分类号： G06F11/00 , G06F11/10 , G11C11/4076
CPC分类号： G11C16/10 , G06F11/1068 , G11C16/3431
摘要： A method and device for selectively refreshing a region of a non volatile memory of a data storage device is disclosed. In a particular embodiment, a method is disclosed that includes comparing a time stamp received from a host device to a first time stamp retrieved from a data storage device for a first region of a non volatile memory, the first region including a least recently accessed region of a memory array within the data storage device. The method also includes selectively refreshing the first region based on a comparison of a difference between the time stamp received from the host device and the first time stamp as compared to a threshold, where the threshold is adjusted based on a first error count corresponding to a number of errors detected by an error correction code (ECC) engine with respect to data retrieved from the first region.
摘要翻译：公开了一种用于有选择地刷新数据存储装置的非易失性存储器的区域的方法和装置。在特定实施例中，公开了一种方法，其包括将从主机设备接收的时间标记与从非易失性存储器的第一区域的数据存储设备检索的第一时间标记进行比较，所述第一区域包括最近访问的区域的数据存储设备内的存储器阵列。该方法还包括基于从主机设备接收的时间戳和与阈值相比较的第一时间戳之间的差异的比较来选择性地刷新第一区域，其中基于对应于第一时间戳的第一错误计数来调整阈值由纠错码（ECC）引擎相对于从第一区域检索的数据检测到的错误的数量。

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