Recording medium having a plurality of sections storing root directory information
AssigneeRicoh Company, Ltd.
InventorMitsuru Ohgake
Life of this patent
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Abstract
A recording medium can store data which can be accessed exclusively by a particular person in a general circumstance of using a recording medium such as a personal computer circumstance. The recording medium stores the data having a directory structure. A first set of root directory information is recorded in a first section. A second set of root directory information is recorded in a second section located at a predetermined position different from the position of the first section. The first set of root directory information is a part of the second set of root directory information.
Claims10
A recording medium storing data having a directory structure, comprising:
- a first section in which a first set of root directory information is recorded;
- and
- a second section in which a second set of root directory information is recorded, said second section being located at a predetermined position different from a position of said first section,
- wherein said first set of root directory information is a part of said second set of root directory information.
A method for accessing a recording medium, comprising the steps of:
- discriminating whether said recording medium has both a first set of root directory information and a second set of root directory information, said first set of root directory information indicating only a root directory of data recorded on said recording medium, said second set of root directory information indicating all directories and files of the data recorded on said recording medium;
- determining whether a person, who is accessing said recording medium, is an authorized person when said recording medium has said second sets of root directory information;
- and
- reading root directory position information recorded at a predetermined position on said recording medium only when said person is determined to be the authorized person, the root directory position information indicating a position at which said second set of root directory information is recorded.
Dependencies are inferred from the claim text.