Patent ID: 7965602

Claim:
An information recording apparatus for irradiating a recording medium with a laser to form a recording mark according to a recording signal, the apparatus comprising: a light source which emits said laser; and a controller which projects a laser pulse onto said recording medium by driving said light source based on said recording signal, wherein said controller comprises a mark controller which changes an output level of said laser pulse between a normal level and a writing level that is higher than said normal level in accordance with said recording signal during a mark period of said recording signal, and a space controller which changes the output level of said laser pulse to a level lower than said normal level for a predetermined period during a space period of said recording signal that has one of several time widths, and wherein said space controller changes the output level of said laser pulse for a predetermined first period in a space period having a long time width among said several time widths, and changes the output level of said laser pulse for a second period that is longer than the first period in a space period having a short time width among said several time widths.