Patent ID: 7924669
Filing Date: 2011-04-12
Classification: G11B

Abstract:
1. An optical disk device comprising: a test recording portion configured to record test information on a predetermined test recording area of an optical disk; a power control portion configured to determine a first recording power to record recording information to the optical disk based on the test information recorded by the test recording portion; a recording portion configured to record the recording information to the optical disk at the first recording power; and a power correction portion configured to calculate a first average of modulation of the recording information recorded on a first track of the optical disk at the first recording power and a second average of modulation of the recording information recorded on a second track of the optical disk at the first recording power with the second track of the optical disk being located away from the first track of the optical disk in a radial direction of the optical disk, and the power correction portion further configured to increase the first recording power to a second recording power so that the recording portion records the recording information at the second recording power when the second average of the modulation drops below a first threshold value that is preset and drops below a second threshold value that is calculated based on the first average of the modulation.