BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings,
FIG. 1 is a view showing an example of an apparatus configuration according to the first embodiment of the present invention;
FIG. 2 is a view showing a recording pulse (pulse train) of a DVD-RAM (or, “DVD-RAM disc,” hereafter);
FIG. 3 is a schematic diagram showing an example of the relationship between a record power and jitter;
FIG. 4 is a diagram showing an example of the execution content of a trial write;
FIG. 5 is a view showing servo misalignments on account of deviations;
FIG. 6 is a schematic view showing an example of the relationship between the record power and beta value;
FIG. 7 is an execution flowchart of the trial write according to the first embodiment;
FIG. 8 is an execution flowchart of a trial write according to a second embodiment of the present invention; and
FIG. 9 is an execution flowchart of a trial write according to a third embodiment of the present invention.