Patent ID: 8472297

Claim:
An optical disc apparatus for irradiating an optical disc with laser light to form a mark based on information, the apparatus comprising: an optical pickup mechanism having a laser light source to irradiate the optical disc with laser light; a pulse generating circuit for generating a write pulse signal based on the information; and a laser power control circuit for controlling luminescent power of the laser light source based on a write pulse signal, wherein: the write pulse signal includes a mark period during which a mark is formed and a space period during which the mark is not formed, the mark period includes: a top pulse having first write power Pw; a bias pulse that follows the top pulse and has bias power Pm lower than the first write power Pw; and a last pulse that follows the bias pulse and has second write power Pl lower than the first write power Pw, and the second write power Pl of the last pulse is applied to an end section of the mark based on the information.