发明名称 |
Universal disk format volumes with variable size |
摘要 |
The present invention provides methods and systems for creating and manipulating universal disk format (UDF) data structures having variable amounts of data. For some embodiments, a UDF data structure is formatted with a freespace bitmap field large enough to represent a first amount of data and an area adjacent the freespace bitmap field reserved to allow the freespace bitmap field to expand to represent a second amount of data greater than the first amount of data. The freespace bitmap field may be expanded to represent the second amount of data by increasing a freespace bitmap size field to represent an expanded freespace bitmap field and initializing the expanded portion of the freespace bitmap size field.
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申请公布号 |
US6961812(B2) |
申请公布日期 |
2005.11.01 |
申请号 |
US20020263953 |
申请日期 |
2002.10.03 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
BJORK THOMAS A.;CHRISTOFFERSON ARMIN H.;GREGG LEON E.;TILBURY JAMES L. |
分类号 |
G06F3/06;G11B20/12;(IPC1-7):G06F12/00 |
主分类号 |
G06F3/06 |
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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