INFORMATION RECORDING DEVICE AND INFORMATION RECORDING METHOD

摘要

In a recording strategy appropriate for high-speed recording, a laser drive signal includes a top pulse having a pulse width corresponding to a recording mark length and a multi-pulse having a cycle 3 times greater than the reference clock cycle T of the recording mark. The top pulse serves as a first top pulse of the same shape when the recording mark length is 3nT (n is an integer), and a second top pulse of the same shape when the recording mark length is (3n+1)T, and a third top pulse of the same shape when the recording mark length is (3n+2)T.