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US 2004/0111582 A1Published application
File-update apparatus
AssigneePanasonic Corporation
InventorsTakuji Maeda, Shinji Inoue
Life of this patent
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AssigneePanasonic Corporation
InventorsTakuji Maeda, Shinji Inoue
Estimating the term…
A file-update apparatus, which can mount a removable information recording medium storing a FAT and a directory entry that show a storage location, on the medium, of data constituting a content of a file, and which executes a plurality of update procedures to update the file, records progress information showing which of the update procedures have been executed in updating the file into an internal memory having a continuous power supply. At a time of updating the file, the apparatus records, onto the medium, data constituting a content of the file after updating, in a different storage location from the data constituting the content of the file before updating, records, into the memory, update information showing the storage location of the data constituting the post-update file content, and then updates the FAT and the directory entry based on the update information, so as to show the storage location of this data. Even if an abnormal stoppage of the update procedures caused by a power-down or the like occurs during updating of the FAT, for example, the progress and update information remain in the memory. Thus, the FAT and the like can be re-updated and inconsistencies resolved using this information, after recovering from the abnormal stoppage.
A file-update apparatus which is able to mount a removable first recording medium storing location information showing a storage location, on the first recording medium, of data constituting a content of a file, and which executes a plurality of update procedures to update the file, comprising:
A file-update method that executes a plurality of update procedures to update a file on a first recording medium storing location information showing a storage location, on the first recording medium, of data constituting a content of the file, comprising the steps of:
A computer program for having an apparatus that includes a CPU execute file-update processing in which a plurality of update procedures are executed to update a file on a first recording medium storing location information showing a storage location, on the first recording medium, of data constituting a content of the file, the file-update processing comprising the steps of:
Dependencies are inferred from the claim text.