STORAGE MEDIUM USING NONVOLATILE SEMICONDUCTOR STORAGE DEVICE, DATA TERMINAL HAVING THE STORAGE MEDIUM MOUNTED THEREON, AND FILE ERASING METHOD USABLE FOR THE SAME
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United States of America Patent
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Issued Date -
Feb 6, 2014
app pub date -
Jul 31, 2013
filing date -
Aug 1, 2012
priority date (Note) -
Abandoned
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Abstract
A storage medium using a nonvolatile semiconductor storage device for erasing data with certainty on a file-by-file basis and preventing an inadvertent file leak as much as possible is provided. A file erasing method includes (a) reading data other than data in a file which is a target of erase from an erase block having the file as the target of erase recorded therein; (b) writing the read data other than the data in the file which is the target of erase to another erase block; and (c) erasing all the data in the erase block in which the file as the target of erase is recorded.
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