Information recording medium having an area for recording information indicating logical erasure of data and method for recording information
AssigneeCanon Kabushiki Kaisha
InventorsWataru Sakagami, Yutaka Ogasawara
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Abstract
There is disclosed an information recording medium having an area for recording data and an area for recording a directory used to manage the recorded data, by providing an area for recording information indicating logical erasure of the unnecessary data. In the information record method of the present invention, when unnecessary data is produced, information indicating the logical erasure of the data is recorded in the area of the information record medium in which the directory is recorded.
Claims6
A method for recording information on an information recording medium comprising a first area for recording data and a second area for recording at least one directory used to manage the data, said method comprising the steps of:
- recording data on the first area of the medium;
- recording a first directory on the second area of the medium corresponding to the data on the first area;
- and
- recording a second directory in an unrecorded portion of the second area to indicate logical erasure of the data when the data is no longer needed.
Dependencies are inferred from the claim text.