Patent ID: 7313076
Filing Date: 2007-12-25
Classification: G11B

Abstract:
1. A method of setting optimum recording power of an optical recording and/or reproducing apparatus, comprising: setting a first optimum recording power value using characteristic values of an RF signal detected from an optical disc, and recording a predetermined pattern on the optical disc while changing the first optimum recording power value; measuring a value of jitter according to the recorded pattern, and setting a recording power value when a minimum value of jitter is obtained as a second optimum recording power value; calculating the characteristic values from the second optimum recording power value inversely; and setting a third optimum recording power value using the inversely calculated characteristic values from the second optimum recording power value, wherein the characteristic values comprise at least one of a value β which indicates a degree of asymmetry of the RF signal, a modulation value, a value γ which is obtained by differentiating modulation of the RF signal, and a value ρ which denotes an offset value of the optical disc.