Patent ID: 8391115

Claim:
A method comprising: detecting light reflected from a circumferential location of an optical storage medium; determining at least one quality measure based on the detected light; establishing a correlation based on i) the at least one quality measure and ii) a corresponding circumferential location including: identifying a plurality of circumferential locations including the corresponding circumferential location on the optical storage medium, analyzing each circumferential location using a plurality of power levels, selecting, based on the analysis, a power level among the plurality of power levels as a selected power level for each of the plurality of circumferential locations, the selected power level yielding a desired value associated with the at least one quality measure at the corresponding circumferential location, and associating the at least one quality measure with the respective selected power level for the corresponding circumferential location; and adjusting, based on the correlation, a power level of a light source that emits the light onto the optical storage medium including adjusting the power level of the light source based on the respective selected power level to achieve the desired value at each of the plurality of circumferential locations.