OPTICAL DISK DRIVE AND METHOD OF SELECTING MASS ECCENTRICITY PARAMETER

摘要

PROBLEM TO BE SOLVED: To reduce vibration and noise of an optical disk drive by easily and surely changing a mass eccentricity parameter in accordance with a using environment of the optical disk drive or a user's preference. SOLUTION: A reproducing signal processing apparatus 8 detects the number of track traverse (TZC values) corresponding to the mass eccentricity of the optical disk 1 from the reproducing signal of the optical pickup 3. A memory 9 stores a plurality of mass eccentricity parameters stipulating an upper limit value of TZC values in each disk rotating speed. A microcomputer reduces a rotating speed of a disk motor 2 to a limiting speed stipulated in the parameter when the detected TZC value exceeds the upper limit value to be stipulated in the mass eccentricity parameter. An eject button 11 selects the parameter desired by the user from the plurality of mass eccentricity parameters stored in the memory 9. COPYRIGHT: (C)2011,JPO&INPIT