Patent ID: 6459666
Filing Date: 2002-10-01
Classification: G11B

Abstract:
An information recording method for recording information on an optical disk by a recording pulse train of an optical beam emitted by an optical source, said method comprising the steps of:(a) changing a recording channel clock period T in accordance with a change of a recording linear velocity so that a recording linear density is kept constant; and (b) updating values of parameters Ttop, Tmp and &rgr; at intervals based on a desired recording linear velocity, where Ttop is a ratio of a width of a top heating pulse in the recording pulse train to the recording channel clock period T, Tmp is a duty ratio of each heating pulse in a multi-pulse section following the top heating pulse, and &rgr; is a ratio of a recording power Pw at the desired linear velocity to an optimal recording power Pwmin at a minimum recording linear velocity (&rgr;=Pw/Pwmin).