发明名称 |
Semiconductor memory card, semiconductor memory control apparatus, and semiconductor memory control method |
摘要 |
A host information memory is provided in a semiconductor memory card and a data write start address and a data size supplied by an access unit are stored. A free physical area generation section determines whether or not to perform erasing of an invalid block of a nonvolatile memory when writing of data based on the data write start address and data size, and determines the number of blocks to be erased. When erasing, writing of data and erasing of invalid blocks are simultaneously performed with respect to different memory chips. Erase process of data, herewith, can be optimized and high speed access from the access unit to a semiconductor memory card can be realized.
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申请公布号 |
US2006221719(A1) |
申请公布日期 |
2006.10.05 |
申请号 |
US20050553725 |
申请日期 |
2005.10.19 |
申请人 |
MAEDA TAKUJI;INOUE SHINJI;GOTOH YOSHIHO;OHARA JUN;NAKANISHI MASAHIRO;TSUJITA SHOICHI;IZUMI TOMOAKI;KASAHARA TETSUSHI;TAMURA KAZUAKI;MATSUNO KIMINORI;HORIUCHI KOICHI;INOUE MANABU |
发明人 |
MAEDA TAKUJI;INOUE SHINJI;GOTOH YOSHIHO;OHARA JUN;NAKANISHI MASAHIRO;TSUJITA SHOICHI;IZUMI TOMOAKI;KASAHARA TETSUSHI;TAMURA KAZUAKI;MATSUNO KIMINORI;HORIUCHI KOICHI;INOUE MANABU |
分类号 |
G11C7/10;G06F3/06;G06F3/08;G06F12/00;G06F12/02;G06F12/06;G06K17/00 |
主分类号 |
G11C7/10 |
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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