
基本信息:
- 专利标题: Maintenance operations for multi-level data storage cells
- 专利标题(中):Wartungsarbeitenfürmehrstufige Datenspeicherzellen
- 申请号:EP11159438.8 申请日:2007-05-14
- 公开(公告)号:EP2333780A1 公开(公告)日:2011-06-15
- 发明人: Cornwell, Michael J. , Dudte, Christopher P.
- 申请人: Apple Inc.
- 申请人地址: 1 Infinite Loop Cupertino, CA 95014 US
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: 1 Infinite Loop Cupertino, CA 95014 US
- 代理机构: Wardle, Callum Tarn
- 优先权: US800357P 20060515; US694739 20070330
- 主分类号: G11C11/56
- IPC分类号: G11C11/56 ; G11C16/28
摘要:
Systems and methods, including computer software, for reading data from a flash memory cell (124) involve detecting voltages from a group of memory cells. The group of memory cells have associated metadata for error detection (605), and each memory cell stores a voltage representing a data value selected from a plurality of possible data values. Each possible data value corresponds to one range of multiple non-overlapping ranges of analog voltages. Memory cells having uncertain data values are identified based on the detected voltages (610). Alternative data values for the memory cells having the uncertain data values are determined (615). A combination of alternative data values is selected (625), and an error detection test is performed (635) using the metadata associated with the memory cells and the selected combination of alternative data values.
摘要(中):
用于从闪存单元(124)读取数据的系统和方法(包括计算机软件)涉及检测来自一组存储器单元的电压。 存储器单元组具有用于错误检测的相关联的元数据(605),并且每个存储器单元存储表示从多个可能数据值中选择的数据值的电压。 每个可能的数据值对应于模拟电压的多个非重叠范围的一个范围。 基于检测到的电压来识别具有不确定数据值的存储单元(610)。 确定具有不确定数据值的存储单元的替代数据值(615)。 选择替代数据值的组合(625),并且使用与存储器单元相关联的元数据和所选择的备选数据值的组合来执行错误检测测试(635)。
公开/授权文献:
- EP2333780B1 Maintenance operations for multi-level data storage cells 公开/授权日:2013-03-27
IPC结构图谱:
G11C11/56 | 组优先于G11C11/02至G11C11/54中各组。 |