Recording device and method, and computer program, and recording medium

A recording method of recording a data pattern onto a recording medium at an arbitrary recording speed,

• the recording method comprising:
• a first strategy calculating process of calculating a first optimum strategy which allows jitter of the data pattern recorded at a first recording speed to satisfy a desired condition, on the basis of a result of reading the data pattern recorded by a predetermined first standard strategy used to record the data pattern at the first recording speed;
• a second strategy calculating process of calculating a second standard strategy used to record the data pattern at a second recording speed by performing a clock cycle conversion process according to a difference between the first recording speed and the second recording speed, which is different from the first recording speed, on the first standard strategy;
• a second power calculating process of calculating a second optimum power used to record the data pattern at the second recording speed, on the basis of a result of reading the data pattern recorded at the second recording speed;
• a third strategy calculating process of calculating a second optimum strategy which allows jitter of the data pattern recorded at the second recording speed to satisfy a desired condition, by adjusting a strategy of the second standard strategy for recording at least one portion of the data pattern, on the basis of a result of reading the data pattern recorded at the second recording speed with the second optimum power and in the second standard strategy;
• and
• a fourth strategy calculating process of calculating a third optimum strategy used to record the data pattern at a third recording speed which is different from the first recording speed and the second recording speed, on the basis of each of a difference between the first standard strategy and the first optimum strategy and a difference between the second standard strategy and the second optimum strategy.

A computer readable recording medium wherein the recording medium is non-transitory recording thereon a computer program for recording control and for controlling a computer provided in a recording apparatus for recording a data pattern onto a recording medium at an arbitrary recording speed, the recording apparatus comprising:

• a first strategy calculating device for calculating a first optimum strategy which allows jitter of the data pattern recorded at a first recording speed to satisfy a desired condition, on the basis of a result of reading the data pattern recorded by a predetermined first standard strategy used to record the data pattern at the first recording speed;
• a second strategy calculating device for calculating a second standard strategy used to record the data pattern at a second recording speed by performing a clock cycle conversion process according to a difference between the first recording speed and the second recording speed, which is different from the first recording speed, on the first standard strategy;
• a second power calculating device for calculating a second optimum power used to record the data pattern at the second recording speed, on the basis of a result of reading the data pattern recorded at the second recording speed;
• a third strategy calculating device for calculating a second optimum strategy which allows jitter of the data pattern recorded at the second recording speed to satisfy a desired condition, by adjusting a strategy of the second standard strategy for recording at least one portion of the data pattern, on the basis of a result of reading the data pattern recorded at the second recording speed with the second optimum power and in the second standard strategy;
• and a fourth strategy calculating device for calculating a third optimum strategy used to record the data pattern at a third recording speed which is different from the first recording speed and the second recording speed, on the basis of each of a difference between the first standard strategy and the first optimum strategy and a difference between the second standard strategy and the second optimum strategy,
• the computer program making the computer function as at least one portion of the first strategy calculating device, the second strategy calculating device, the second power calculating device, the third strategy calculating device, and the fourth strategy calculating device.

A recording medium comprising a recording condition recording area to record therein recording condition information which directly or indirectly indicates a third optimum power calculated by a recording apparatus for recording a data pattern onto a recording medium at an arbitrary recording speed, the recording apparatus comprising:

• a first strategy calculating device for calculating a first optimum strategy which allows jitter of the data pattern recorded at a first recording speed to satisfy a desired condition, on the basis of a result of reading the data pattern recorded by a predetermined first standard strategy used to record the data pattern at the first recording speed;
• a second strategy calculating device for calculating a second standard strategy used to record the data pattern at a second recording speed by performing a clock cycle conversion process according to a difference between the first recording speed and the second recording speed, which is different from the first recording speed, on the first standard strategy;
• a second power calculating device for calculating a second optimum power used to record the data pattern at the second recording speed, on the basis of a result of reading the data pattern recorded at the second recording speed;
• a third strategy calculating device for calculating a second optimum strategy which allows jitter of the data pattern recorded at the second recording speed to satisfy a desired condition, by adjusting a strategy of the second standard strategy for recording at least one portion of the data pattern, on the basis of a result of reading the data pattern recorded at the second recording speed with the second optimum power and in the second standard strategy;
• and a fourth strategy calculating device for calculating the third optimum strategy used to record the data pattern at a third recording speed which is different from the first recording speed and the second recording speed, on the basis of each of a difference between the first standard strategy and the first optimum strategy and a difference between the second standard strategy and the second optimum strategy.

A recording medium on which a data pattern is recorded by using a third optimum strategy calculated by a recording apparatus for recording the data pattern onto a recording medium at an arbitrary recording speed, the recording apparatus comprising:

• a first strategy calculating device for calculating a first optimum strategy which allows jitter of the data pattern recorded at a first recording speed to satisfy a desired condition, on the basis of a result of reading the data pattern recorded by a predetermined first standard strategy used to record the data pattern at the first recording speed;
• a second strategy calculating device for calculating a second standard strategy used to record the data pattern at a second recording speed by performing a clock cycle conversion process according to a difference between the first recording speed and the second recording speed, which is different from the first recording speed, on the first standard strategy;
• a second power calculating device for calculating a second optimum power used to record the data pattern at the second recording speed, on the basis of a result of reading the data pattern recorded at the second recording speed;
• a third strategy calculating device for calculating a second optimum strategy which allows jitter of the data pattern recorded at the second recording speed to satisfy a desired condition, by adjusting a strategy of the second standard strategy for recording at least one portion of the data pattern, on the basis of a result of reading the data pattern recorded at the second recording speed with the second optimum power and in the second standard strategy;
• and a fourth strategy calculating device for calculating the third optimum strategy used to record the data pattern at a third recording speed which is different from the first recording speed and the second recording speed, on the basis of each of a difference between the first standard strategy and the first optimum strategy and a difference between the second standard strategy and the second optimum strategy.