Optical data recording method

摘要

An optical data 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 an optical disc, so that predefined and selectable recording marks and spaces are recorded on the disc, 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 the front and forms the leading edge of the recording mark; a last pulse which is disposed at the backend and forms the trailing edge of the recording mark; and a multi-pulse train which is disposed between the first pulse and the last pulse and forms the center of the recording mark, the multi-pulse train having 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, characterized in that the recording marks have different lengths differing by T or multiples thereof, and the shortest recording mark and the second shortest recording mark are constituted by a single pulse, and a corresponding device.