发明名称 |
METHOD FOR CONTROLLING OVERWRITING OF DATA BY TAPE RECORDING APPARATUS, PROGRAM FOR CONTROLLING OVERWRITING, AND TAPE RECORDING APPARATUS |
摘要 |
<p>A data-overwriting technique that facilitates determining whether data is new or old, when reading thereof. A tape recording apparatus includes: a receiving unit for receiving information on overwrite starting position and an overwrite request; a trying unit for trying to determine a beginning position of a data unit based on the information on an overwrite starting position, wherein the data unit is a unit of writing data recorded on a tape medium; an overwrite executing unit for executing overwriting from the determined overwrite starting position in response to a success of the determination by the trying unit; and a type judging unit for judging whether the data unit that is recorded at the overwrite starting position is a null data unit or not in response to a failure of the determination by the trying unit. The trying unit responds to judgment that the data unit is the null data unit by trying to determine a beginning of a data unit following the data unit as the overwrite starting position.</p> |
申请公布号 |
EP2337025(A4) |
申请公布日期 |
2013.10.30 |
申请号 |
EP20090827436 |
申请日期 |
2009.09.28 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
KATAGIRI, TAKASHI |
分类号 |
G11B5/09;G11B15/04;G11B20/10;G11B20/18 |
主分类号 |
G11B5/09 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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