Recording medium and information storage apparatus
View Patent ↗A recording medium and an information storage apparatus having high formatting efficiency are provided. The recording medium and the information storage apparatus give IDs for data to be stored. In one embodiment, one ID is provided for two data areas, and no two IDs are situated in line with each other on two adjacent tracks.
1. A recording medium comprising:
data sectors; and
identifier portions each provided for more than one of the data sectors;
each of the identifier portions being arranged in positions shifted from the identifier portions on adjacent tracks.
2. The recording medium as claimed in claim 1 , wherein predetermined tracks are produced in the form of lands, and other tracks adjacent to the predetermined tracks are produced in the form of grooves.
3. The recording medium as claimed in claim 1 , wherein the identifier portions have addresses which are consecutive in a direction of the tracks.
4. The recording medium as claimed in claim 1 , wherein the identifier portions have addresses which are consecutive in a direction of the tracks at intervals of a constant address value.
5. The recording medium as claimed in claim 1 , wherein synchronizing information portions for distinguishing the data sectors are provided between the data sectors.
6. The recording medium as claimed in claim 5 , wherein the synchronizing information portions are arranged adjacent to each other on mutually adjacent tracks.
7. The recording medium as claimed in claim 5 , wherein the synchronizing information portions between sectors on adjacent tracks have the same pattern, and the pattern of the synchronizing information portions in the data sectors with the identifier portions on a track are different from the pattern of the synchronizing information portions in the data sectors with no identifier portions.
8. The recording medium as claimed in claim 6 , wherein the synchronizing information portions are provided on every other track.