DATA STORAGE DEVICE AND METHOD
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United States of America Patent
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Issued Date -
Jan 6, 2011
app pub date -
Jun 30, 2010
filing date -
Jul 2, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
According to one embodiment, a data storage device, includes: a recording medium, statuses of storage areas of the recording medium being managed by groups; a managing table storage module storing a managing table in which bit information pieces are associated to indexes representing the groups, the bit information pieces indicating the statuses of the storage areas initially set to an erased status; a transfer controller storing, upon receiving a write command, data in the storage areas; and a controller updates the bit information pieces of one of the groups to which the storage areas belongs to a stored status. Upon receiving an erase command, the transfer controller overwrites the storage areas by predetermined data. The main controller is configured to update the bit information pieces to the erased status.
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