Dynamic information storage or retrieval – Condition indicating – monitoring – or testing – Including radiation storage or retrieval
Patent
1994-11-30
1995-08-15
Young, W. R.
Dynamic information storage or retrieval
Condition indicating, monitoring, or testing
Including radiation storage or retrieval
369 47, 235456, G11B 700
Patent
active
054426146
ABSTRACT:
A method of recording information on an information recording medium including a first area having a plurality of sectors for recording data and a second area having a plurality of blocks for recording a directory used for managing the data is disclosed. Data is recorded on a first sector group consisting of at least one sector in the first area of the medium. When there is a defect in at least a part of the first sector group, the data to be recorded is recorded on a second sector group consisting of at least one sector in the first area. A directory corresponding to the data is recorded in the first block of the second area of the medium. When there is a defect in the first sector group, information regarding the defect is recorded into the first block of the second area. When only a part of the information regarding the defect can be recorded in the first block, the remaining information regarding the defect is recorded into the second block of the second area.
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Canon Kabushiki Kaisha
Young W. R.
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