Recording medium control method, data management apparatus, and recording medium
First Claim
1. A recording medium control method for controlling access to a plurality of recording media each storing duplicated data, wherein:
- each of the recording media stores identification information for identifying which of the recording media stores the duplicated data;
it is determined whether the data of the recording media are consistent with each other based on the identification information;
the access to the recording media is enabled if it is determined that the data of the recording media are consistent with each other; and
the access to the recording media is inhibited if it is determined that the data of the recording media are inconsistent with each other.
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Abstract
The present invention has an object of providing a recording medium control method, a data management apparatus, and a recording medium for managing data by duplicating the data in each of a plurality of recording media. Two IC cards are loaded into a data management apparatus. In duplicating data in the two loaded IC cards, the two IC cards store their card characteristic numbers for self-identification and the card characteristic number of each other'"'"'s pair IC card. If the card characteristic number of the pair IC card stored in one IC card matches the card characteristic number of the other IC card, the two IC cards are controllable.
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Citations
14 Claims
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1. A recording medium control method for controlling access to a plurality of recording media each storing duplicated data, wherein:
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each of the recording media stores identification information for identifying which of the recording media stores the duplicated data;
it is determined whether the data of the recording media are consistent with each other based on the identification information;
the access to the recording media is enabled if it is determined that the data of the recording media are consistent with each other; and
the access to the recording media is inhibited if it is determined that the data of the recording media are inconsistent with each other. - View Dependent Claims (2, 3)
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4. A data management apparatus loaded with a plurality of recording media each storing duplicated data and controlling access to the loaded recording media, the data management apparatus comprising:
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an access control part determining whether the duplicated data of the recording media are consistent with each other and controlling the access to the recording media based on a result of the determination, wherein;
each of the recording media stores identification information for identifying which of the recording media stores the duplicated data;
said access control part makes the determination based on the identification information; and
said access control part enables the access to the recording media if said access control part determines that the data of the recording media are consistent with each other and inhibits the access to the recording media if said access control part determines that the data of the recording media are inconsistent with each other. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A recording medium for recording data, comprising:
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a plurality of data blocks for recording the data, the data blocks each comprising;
a data recording part recording a number of times the data is updated as number management information; and
a recording control part moving the data stored in the data block to a next available one of the data blocks if the number management information reaches a preset given number of times.
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Specification