发明名称 |
FLASH MEMORY WITH TARGETED READ SCRUB ALGORITHM |
摘要 |
A method and system have been described for counteracting and correcting for read disturb effects in blocks of flash memory. The method may include the step of a controller of the memory system performing a read scrub scan on only a portion of one targeted word line in a block at desired intervals. The controller may calculate whether a read scrub scan is necessary based on a probabilistic determination that is calculated in response to each received host read command. The controller may then place a block associated with the targeted word line into a refresh queue if a number of errors are detected in the targeted word line that meets or exceeds a predetermined threshold. The block refresh process may include copying the data from the block into a new block during a background operation. |
申请公布号 |
US2013346805(A1) |
申请公布日期 |
2013.12.26 |
申请号 |
US201213529522 |
申请日期 |
2012.06.21 |
申请人 |
SPROUSE STEVEN T.;BAUCHE ALEXANDRA;HUANG YICHAO;CHEN JIAN;HUANG JIANMIN;LEE DANA |
发明人 |
SPROUSE STEVEN T.;BAUCHE ALEXANDRA;HUANG YICHAO;CHEN JIAN;HUANG JIANMIN;LEE DANA |
分类号 |
G06F11/28 |
主分类号 |
G06F11/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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