Patent ID: 7139230

Claim:
An information recording apparatus irradiating a laser beam on a recording medium and forming a recording mark corresponding to a recording signal, comprising: a light source which emits the laser beam, and a signal generating device which generates a recording pulse signal for driving the light source on the basis of the recording signal, the recording pulse signal including a first recording pulse signal having an intermediate bias period and a second recording pulse signal having no intermediate bias period, wherein the recording pulse signal includes a mark period in which the recording mark is formed and a space period in which the recording mark is not formed, the first recording pulse signal and the second recording pulse signal being determined in accordance with a length of the mark period, wherein the mark period of the first recording pulse signal includes a top pulse period having a first amplitude level corresponding to a first recording power, and the intermediate bias period having a second amplitude level corresponding to a second recording power which is lower than the first recording power and continuously following a terminating position of the top pulse period, and wherein the mark period of the second recording pulse signal has the first amplitude level.