US 2004/0105331 A1Published application

Method and apparatus for controlling the recording of digital information, and recording medium therefor

AssigneesSanyo Electric Co., Ltd., Sharp Kabushiki Kaisha, Victor Company of Japan, Ltd., Pioneer Corporation, Hitachi, Ltd., Fujitsu Limited

InventorsYuichi Kanai, Yoshihiro Hori, Ryoji Ohno, Takeo Ohishi, Kenichiro Tada, Tatsuya Hirai, Jun Kamada

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Abstract

A recording area of a hard disk is managed “unit” by “unit” where a “unit” is constituted by physically continuous recording regions having predetermined size, and usage status of the unit is stored in an allocation unit (AU) management table. Data requiring a real time processing is stored unit by unit. When the usage status of the unit is changed or modified due to the recording or deletion of data, the AU management table is updated and then information indicative of the fact that the AU management table has been updated is recorded. An apparatus where the final change is made is detected at the time the hard disk is inserted or a file system is initialized. And if the apparatus which last made the change adopts the file system which does not use the AU management table, then the table is reconfigured so as to retain the consistency of the AU management table.

Claims20

Dependent claims

A recording control apparatus, comprising:

a processing unit which performs a processing, involved with writing or deleting data, on a recording medium where recorded is a unit management table which manages usage status of a recording region in units of unit that is constituted by the recording region whose logical address is contiguous and which has a predetermined size;
an updating unit which updates the unit management table in the event that the usage status of the unit is changed by the processing performed by said processing unit;
an updated apparatus information recording unit which records, on the recording medium, apparatus information indicating that an apparatus having performed the processing is capable of updating the unit management table;
a detector which detects, when connected to the recording medium, whether an apparatus that last performed the processing is capable of updating the unit managing table or not by reading out the apparatus information recorded by said updated apparatus information recording unit;
and
a reconstructing unit which reconstructs the unit management table if the apparatus that last performed the processing is not capable of updating the unit management table.

3 more elements

Dependencies are inferred from the claim text.