Recording medium, access apparatus, access method, and program

1. A recording medium, comprising at least one recording area, wherein

the at least one recording area is composed of at least one adjustment area and at least one positional information recording area,

the at least one adjustment area is an area for adjustment an access parameter for accessing the recording medium, and

positional information indicating a position of the at least one adjustment area is recorded in the at least one positional information recording area.

2. A recording medium according to claim 1 , wherein

data for adjusting the access parameter is recorded in the at least one adjustment area, and

usability information indicating whether or not each of the at least one adjustment areas can be used is recorded in the at least one positional information recording area.

3. A recording medium according to claim 1 , wherein

data for adjusting the access parameter is recorded in the at least one adjustment area, and

the positional information indicates a position of an adjusted area in which the access parameter is already adjusted, and

usability information indicating whether or not each of the at least one adjustment areas can be used is recorded in the at least one positional information recording area.

4. A recording medium according to claim 2 or 3 , wherein

the positional information and the usability information correspond to each other, and

the, usability information includes information indicating the number of times of adjustment in the adjustment area.

5. A recording medium according to claim 2 or 3 , wherein

the positional information and the usability information correspond to each other, and

the usability information includes a value of measuring a signal for determining the usability of the adjustment area.

6. A recording medium according to claim 2 or 3 , wherein

the positional information and the usability information correspond to each other, and

the usability information includes a bit sequence indicating the usability of the adjustment area.

7. A recording medium according to claim 1 , wherein

the at least one recording area includes at least one recorded area, and

the positional information includes recorded area information indicating a position of the at least one recorded area.

8. A recording medium according to claim 7 , wherein

the at least one recording area is divided into a plurality of areas in a radial direction of the recording medium, and

the positional information includes information indicating a position of a recorded area included in each of the plurality of areas.

9. A recording medium according to claim 1 , wherein

the at least one recording area is constructed to include an identification information recording area for recording identification information of an apparatus, the apparatus having been used for recording the positional information.

10. A recording medium according to claim 1 , wherein

the at least one positional information recording area includes a parameter for adjustment, the adjustment parameter corresponding to the positional information.

11. A recording medium according to claim 10 , wherein

the positional information recording area includes adjustment parameter usability information indicating whether or not the adjustment parameter can be used.

12. A recording medium according to claim 11 , wherein

the adjustment parameter usability information includes temperature information indicating a temperature when adjustment has been performed in the at least one adjustment area.

13. A recording medium according to claim 11 , wherein

the adjustment parameter usability information includes time information indicating a time when adjustment has been performed in the at least one adjustment area.