Title:
A data storage device, a data storing method, and a data storage program
Document Type and Number:
Japanese Patent JP6107965
Kind Code:
B2
Abstract:
The storing unit (52) stores data sequentially input by sequentially repeating overwriting in blocks not determined as protection targets among a plurality of blocks in a storage area of a storage unit (30), each block having an upper limit in number of data rewrites. A registering unit (54), upon detection of a protection trigger for giving an instruction to protect data, registers, in data stored in a block by the storing unit, protection information for giving an instruction to protect data and block information indicating a block that stores data obtained a predetermined time before the detection of the protection trigger. A managing unit (55) manages, as blocks to be protected, blocks from the block that stores the data obtained the predetermined time before the detection to a block that stores data upon detection of a termination trigger for giving an instruction to terminate protection.
Inventors:
Mari Kawahara
Shigeki Nakata
Yasutaka Umemoto
Shigeki Nakata
Yasutaka Umemoto
Application Number:
JP2015544647A
Publication Date:
April 05, 2017
Filing Date:
October 28, 2013
Export Citation:
Assignee:
富士通株式会社
International Classes:
G06F12/16; H04N5/907; H04N7/18
Domestic Patent References:
| JP2012169754A | ||||
| JP2013182573A | ||||
| JP1066061A | ||||
| JP2001222731A | ||||
| JP2006350885A | ||||
| JP11110299A | ||||
| JP8249237A |
Attorney, Agent or Firm:
Hiroaki Sakai
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