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发明申请
US20110125958A1 SEMICONDUCTOR MEMORY CARD ACCESS APPARATUS, A COMPUTER-READABLE RECORDING MEDIUM, AN INITIALIZATION METHOD, AND A SEMICONDUCTOR MEMORY CARD 有权

  • 专利标题： SEMICONDUCTOR MEMORY CARD ACCESS APPARATUS, A COMPUTER-READABLE RECORDING MEDIUM, AN INITIALIZATION METHOD, AND A SEMICONDUCTOR MEMORY CARD
  • 申请号： US13012978
    申请日： 2011-01-25
  • 公开(公告)号： US20110125958A1
    公开(公告)日： 2011-05-26
  • 发明人: Takuji MAEDA , Teruto Hirota
  • 申请人： Takuji MAEDA , Teruto Hirota
  • 优先权： JP11-299636 19991021
  • 主分类号： G06F12/00
  • IPC分类号： G06F12/00 ;  G06F15/177
SEMICONDUCTOR MEMORY CARD ACCESS APPARATUS, A COMPUTER-READABLE RECORDING MEDIUM, AN INITIALIZATION METHOD, AND A SEMICONDUCTOR MEMORY CARD
摘要：
A predetermined number of erasable blocks positioned at a start of a volume area in a semiconductor memory card are provided so as to include volume management information. A user area following the volume management information includes a plurality of clusters. A data length NOM of an area from a master boot record & partition table sector to a partition boot sector is determined so that the plurality of clusters in the user area are not arranged so as to straddle erasable block boundaries. Since cluster boundaries and erasable block boundaries in the user area are aligned, there is no need to perform wasteful processing in which two erasable blocks are erased to rewrite one cluster.
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