Patent ID: 6747928
Filing Date: 2004-06-08
Classification: G11B

Abstract:
A method for compensating laser energy of an optical disk drive, comprising the steps:(a) inputting a plurality of different illumination parameters for a laser component such that the laser component writes data onto an optical disk with the plurality of different illumination parameters under the write in mode of the optical disk drive; (b) reading the illumination parameter of the feedback signal with respect to the step (a), and reading back the transmitted light source signal under the reading mode of the optical disk drive; (c) performing a preliminary sampling of a bottom curve fit for the feedback signal, and taking sample for the curve constituted by the feedback signal according to the step (b) to proceed with the curve fit computation; (d) minimizing the least square fit for the minimum value obtained from the step (c) to get a new illumination parameter; (e) repeating the steps (a) to (d); (f) obtaining the final optimal illumination parameter; (g) writing the optimal illumination parameter of the step (f) into the laser power control system of the optical disk drive; wherein the optimal illumination parameter obtained from each step eliminating run-out factors due to the deviation of a lens assembly of the optical disk drive, characterized in that the output light source energy of the laser component of the optical disk drive is the largest.