Patent ID: 6958964

Claim:
A method of reproducing data from a disc in a disc-reproducing system, comprising: positioning a pick-up at a specified position on the disc and counting a number of track traverse pulses which are generated when a tracking loop is switched to “OFF” at a first rotation speed and a second rotation speed; determining whether the disc is one of axially eccentric or mass eccentric using the counts at the first and second rotation speeds; varying a third rotation speed during reproduction of data from the disc based on the disc eccentricity; and maintaining the pickup in a fixed position while counting the number of track traverse pulses, wherein the third rotation speed is decreased with increased frequency of vibration, the third rotation speed being approximately 16 times the first rotation speed when the frequency of vibration is determined to be greater than or equal to 80 Hz, the third rotation speed being 20 times the first rotation speed when the frequency of vibration is determined to be greater than or equal to 40 Hz and less than 80 Hz, and the third rotation speed being 24 times the first rotation speed when the frequency of vibration is determined to be less than 40 Hz.