Patent ID: 7719938

Claim:
An optical disk recording/reproducing apparatus for recording and reproducing information by irradiating a laser beam to an optical disk on which data are recorded, and performing a test recording operation on the optical disk to determine optimum recording power of the laser beam prior to recording information, the optical disk recording/reproducing apparatus comprising: an information recording unit for recording information by irradiating the laser beam to the optical disk while varying the recording power stepwise at a plurality of steps; an information reproducing unit for reproducing the information stepwise recorded in the optical disk by the information recording unit; a recorded state index value calculating unit for calculating stepwise recorded state index values which represent an index of a recorded state from signal levels of the information stepwise reproduced by the information reproducing unit; a smoothing calculating unit for performing a smoothing operation to the recorded state index values calculated stepwise by the recorded state index value calculating unit; and an optimum power determining unit for determining the optimum recording power by finding out an optimum recorded state from the recorded state index values stepwise calculated by the smoothing operation performed by the smoothing calculating unit, wherein the smoothing calculating unit performs an operation, as the smoothing operation, for calculating an average of the recorded state index value at each step and a total of three through five recorded state index values at one or two steps prior and posterior to said each step.