INFORMATION RECORDING METHOD, OPTICAL INFORMATION RECORDING/REPRODUCING DEVICE, AND OPTICAL INFORMATION RECORDING MEDIUM USED FOR THE SAME

摘要

An optical information recording/reproducing device effectively and accurately decides at least a recording pulse string time width so as to obtain a preferable signal quality by controlling a recording power and a pulse time interval for affects of the laser rise time upon recording power modulation during a high-speed write onto a write once disc medium. The device includes: modulation means (103) for generating a test pattern containing at least a first recording mark length; recording pulse string conversion means (104) for converting the generated test pattern into a recording pulse string containing trial write recording pulses havingdifferent time widths corresponding to at least the first recording mark length; light emission means (106); reproduction signal processing means (109) for holding as a first signal index characteristic, the relationship between a first signal index acquired according to the reproduction signal obtained from a predetermined region and the recording power; and recording condition calculation means (111) for obtaining a desired time width of a recording pulse of the first recording mark length.