Patent ID: 7864646
Filing Date: 2011-01-04
Classification: G11B

Abstract:
1. An optical recording method for recording information on an optical recording medium by directing pulsed laser light onto an optical disc, comprising: a writing step of forming marks of prescribed lengths by directing the laser light by a write strategy including only a leading pulse or a leading pulse and a multi-pulse, and forming a recorded portion including marks and spaces of prescribed lengths, each space being situated between two marks; a space level reading step of reading peak levels of signals corresponding to the spaces, the signals being obtained by reading said recorded portion; a recording pulse width modification step of comparing the peak levels of the signals, obtained by reading said recorded portion corresponding to the spaces having the same length, according to the lengths of the marks immediately preceding the spaces, and modifying the pulse widths of the multi-pulses in the write strategy according to results of the comparisons; and a writing step of writing to the optical recording medium, using the pulse widths of the write strategy as modified in the recording pulse width modification step.