Apparatus and method for data processing employing data blocks and updating blocks
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United States of America Patent
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Mar 26, 2002
Grant Date -
Jan 17, 2002
app pub date -
Feb 23, 1998
filing date -
Feb 28, 1997
priority date (Note) -
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status (Latency Note)
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Abstract
To be able to maintain compatibility of a plurality of data even when a hazard is caused in the midst of writing the plurality of related data, a first region stores physical block numbers #00H through #03H of physical blocks constituting a data region respectively in correspondence with logical block numbers %00H through %03H, for example, when a request of writing data is made to the logical blocks %00H and %02H, the data are respectively written to, for example, physical blocks #04H and #05H which are updating blocks for updating data in physical blocks constituting the data region and block numbers #04H and #05H of the physical blocks are stored to a second region respectively in correspondence with the logical blocks %00H and %02H.
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