发明名称 |
MULTIPLE PROGRAMMING OF FLASH MEMORY WITHOUT ERASE |
摘要 |
<p>To store, successively, in a plurality of memory cells, first and second pluralities of input bits that are equal in number, a first transformation transforms the first input bits into a first plurality of transformed bits. A first portion of the cells is programmed to store the first transformed bits according to a mapping of bit sequences to cell levels, but, if the first transformation has a variable output length, only if there are few enough first transformed bits to fit in the first cell portion. Then, without erasing a second cell portion that includes the first portion, if respective levels of the cells of the second portion, that represent a second plurality of transformed bits obtained by a second transformation of the second input bits, according to the mapping, are accessible from the current cell levels, the second portion is so programmed to store the second transformed bits.</p> |
申请公布号 |
WO2011128867(A1) |
申请公布日期 |
2011.10.20 |
申请号 |
WO2011IB51613 |
申请日期 |
2011.04.14 |
申请人 |
RAMOT AT TEL AVIV UNIVERSITY LTD.;SHARON, ERAN;ALROD, IDAN;LITSYN, SIMON;ILANI, ISHAI |
发明人 |
SHARON, ERAN;ALROD, IDAN;LITSYN, SIMON;ILANI, ISHAI |
分类号 |
G11C16/10;G11C11/56;G11C16/34 |
主分类号 |
G11C16/10 |
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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