Title:
【発明の名称】ファイル管理方法
Document Type and Number:
Japanese Patent JP2993520
Kind Code:
B2
Abstract:
PURPOSE:To replay the information which has been erased logically by a method wherein a directory having an unrecorded region is recorded in a recording medium and, when a file which manages the directory is erased, information on an erasure information is recorded in the unrecorded region. CONSTITUTION:An unrecorded region 104 is formed at the inside of directories 21 to 30 which manage a file. When the file is erased logically, information, on an erasure operation, which indicated a logical erasure information is recorded in the unrecorded region 104. For example, a figure 1 as information, on an erasure operation, which indicates that the erasure operation has been performed is recorded in an unrecorded region 104 for erasure directories 21 to 24, 26, 27 which indicate that a file has been erased logically. Consequently, the content of the file which has been erased in the past can be retrieved. Thereby, the information which has been erased logically can be replayed.
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Inventors:
INOE MASATO
Application Number:
JP31597390A
Publication Date:
December 20, 1999
Filing Date:
November 22, 1990
Export Citation:
Assignee:
KYANON KK
International Classes:
G11B27/00; G06F12/00; (IPC1-7): G06F12/00; G11B27/00
Domestic Patent References:
| JP6175938A | ||||
| JP6122488A | ||||
| JP6369072A | ||||
| JP63287076A | ||||
| JP61287076A | ||||
| JP59188814A |
Attorney, Agent or Firm:
Yamashita