| 摘要 |
A power control process in which an inner region optimum power control ("OPC") value of an inner region of an optical disc is measured at a base speed is selectively performed. A predicted outer region OPC value is calculated based upon the inner region OPC value, a reference laser power associated with the base speed and a desired maximum speed. The predicted outer region OPC value is compared with a laser power limit, and whether to measure an outer region OPC value on an outer region of the optical disc at a desired maximum speed is determined.
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