Patent ID: 7319647

Claim:
A method for modifying a 2T write strategy on an optical disk drive, the method comprising: (a) forming a test odd mark and a test even mark on an optical disk; (b) comparing a timing occurring the maximum signal strength in the signal waveform associated with the test even mark and a timing occurring the maximum signal strength in a first ideal waveform, and comparing a timing occurring the maximum signal strength in the signal waveform associated with the test odd mark and a timing occurring the maximum signal strength in a second ideal waveform; and (c) when a first timing offset is detected between the timing occurring the maximum signal strength in the signal waveform associated with the test even mark and the timing occurring the maximum signal strength in a first ideal waveform, adjusting a plurality of writing periods used for forming an even mark according to the first timing offset; and when a second timing offset is detected between the timing occurring the maximum signal strength in the signal waveform associated with the test odd mark and the timing occurring the maximum signal strength in a second ideal waveform, adjusting a plurality of writing periods used for forming an odd mark according to the second timing offset.