Patent ID: 7751293

Claim:
A trial write method for setting a recording condition for the recording of information on an information recording medium, the method comprising: recording a first trial write pattern and a second trial write pattern, wherein, provided that a mark length of each mark included in a recording code sequence is represented by n times a reference clock period, where n is a natural number, the first trial write pattern corresponds to marks with lengths whose n are odd numbers while the second trial write pattern corresponds to marks with lengths whose n are even numbers; reproducing the first and second trial write patterns that have been recorded, and, on the basis of the result of reproduction, setting recording pulse waveforms corresponding to the marks with lengths whose n are odd numbers and recording pulse waveforms corresponding to the marks with lengths whose n are even numbers; and collectively adjusting start positions of irradiating first light pulses of the recording pulse waveforms corresponding to the marks with lengths whose n are odd numbers and collectively adjusting start positions of irradiating first light pulses of the recording pulse waveforms corresponding to the marks with lengths whose n are even numbers.