Recording condition optimizing method, information recording/reproducing device, and integrated circuit device

Abstract

A recording condition optimizing method for minimizing influences from the optical characteristics and the reproduction transfer passage characteristics of an optical head, to adjust more proper recording conditions. The recording condition optimizing method optimizes the recording conditions for recording information in an optical disk (100), and comprises a recording step (1103) of recording a record pattern containing a plurality of record marks in the optical disk, a reproducing step (1102) of reproducing the record pattern recorded at the recording step (1103), an equalizing characteristic setting step (1101) of setting the waveform equalizing characteristics in accordance with the record pattern, an equalizing step (1105) of waveform-equalizing the reproduced signal reproduced at the reproducing step (1102) by using the waveform equalizing characteristics set at the equalizing characteristic setting step (1101), and an adjusting step (1104) of adjusting the recording conditions with the reproduced signal having the waveform equalized at the equalizing step (1105).

Description

Technical field [0001] The present invention relates to a method for optimizing recording conditions for optically recording and reproducing information using light beams from a light source such as a semiconductor laser, an information recording and reproducing device, and an integrated circuit device. Background technique [0002] With the popularization of personal computers, information recording devices that record digital information such as optical disk devices, hard disk devices (HDD), and magneto-optical disk devices have been widely used. In these information recording devices, in order to increase the recording capacity, high-density technology development is frequently carried out. [0003] Among them, for an optical disc device using an optical disc as an information carrier, high-density recording has been achieved from CD to DVD. Moreover, a BD (Blu-ray Disc) with a capacity of 23GB using a blue laser has appeared. In addition, it is expected that devices that can ...

AI Technical Summary

Problems solved by technology

That is, due to the influence of the waveform distortion of the reproduction transmission path, it is not always possible to record good marks on the optical disc in the adjustment of the recording conditions using the reproduction signal.

This is because the optical characteristics change due to the deviation of the aperture of the light beam irradiated from the optical head, and as a result, the waveform distortion of the reproduced signal occurs.

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