Patent ID: 7489613

Claim:
A recording method comprising the steps of: modulating data to be recorded, to generate a plurality of recording modulation codes; and emitting a pulsed light beam to a data storage medium, so that a plurality of recording marks and spaces are recorded on the data storage medium, the lengths of the recording marks and spaces being defined by the modulated data, wherein at least two of the plurality of the recording marks comprise: a first pulse which is disposed at a front and forms a leading edge of the recording mark; a last pulse which is disposed at a backend and forms a trailing edge of the recording mark; and a multi-pulse train which is disposed between the first pulse and the last pulse and forms a center of the recording mark, the multi-pulse train has a pulse period longer than T, T representing a reference period of the recording modulation code, the number of pulses in each of the recording marks is increased by one as the recording mark is increased in length by 2T, the plurality of recording marks have different lengths differing by T or multiples thereof from one another, the shortest recording mark and the second shortest recording mark are each constituted by a single pulse, and among the recording marks each constituted by two or more pulses, a pulse width of the last pulse of any recording mark that has a predetermined length is equal to a pulse width of the last pulse of any recording mark that has a length which is 2T longer than the predetermined length, wherein a last pulse rising timing of an n th (n is an odd number which is three or greater) shortest recording mark and a last pulse rising timing of an (n+1) th shortest recording mark are different from each other by 0.5T, and a last pulse rising timing of an (n+1) th shortest recording mark and a last pulse rising timing of an (n+2) th shortest recording mark are different from each other by 1.5T.