Patent ID: 7423942

Claim:
An optical disc device comprising: a pickup having a semiconductor laser for providing a laser beam for recording data on an optical disc, wherein the pickup is configured to identify a type of the optical disc during execution of a recording operation on the optical disc; a motor configured to rotate the optical disc at a rotational speed; a movement mechanism configured to move the pickup in a radial direction of the optical disc; a system controller configured to control a data recording speed at which the recording operation is executed on the optical disc, wherein the system controller controls the data recording speed by supplying a drive current to the semiconductor laser and by controlling the rotational speed at which the motor rotates the optical disc; a temperature sensor configured to detect a temperature of an interior of the pickup; and a memory configured to store information corresponding to different types of optical discs, wherein the information comprises a data recording speed at which a recording operation is optimally executed on a particular type of optical disc based on a particular temperature of the interior of the pickup; wherein the system controller: determines the type of the optical disc on which the pickup is executing the recording operation, wherein the type of the optical disc is determined from the pickup, obtains a data recording speed from the memory, wherein the obtained data recording speed corresponds to the data recording speed at which a recording operation is optimally executed on the determined type of the optical disc at the temperature detected by the temperature sensor, and controls the drive current supplied to the semiconductor laser and controls the rotational speed at which the motor rotates the optical disc based on the obtained data recording speed such that the data recording speed at which the recording operation is executed on the optical disc is changed to the obtained data recording speed thereby continuously executing the recording operation on the optical disc.