METHOD AND APPARATUS OF REPRODUCING DATA FROM AN INFORMATION STORAGE MEDIUM

摘要

METHOD, A MEDIUM, AND AN APPARATUS TO RECORD/REPRODUCE DATA ONIFROM A PORTION OF THE MEDIUM THROUGH WHICH A TEST 5 BEAM IS PASSED WHILE DETERMINING AN OPTIMUM POWER AN INFORMATION STORAGE MEDIUM ON WHICH DATA IS RECORDED -AFTER PERFORMING OPTIMUM POWER CONTROL (OPC) AND A METHOD AND APPARATUS TO RECORD/REPRODUR-E DATA ON/FROM THE INFORMATION STORAGE MEDIUM, WHEREIN THE RECORDABLE INFORMATION 10 STORAGE MEDIUM HAS A PLURALITY OF RECORDING LAYERS (LI, 1-2) AND A PICKUP (50) IRRADIATES A BEAM ONTO THE INFORMATION STORAGE MEDIUM, UTILIZE OPERATIONS OF: RECORDING DATA ON AT LEAST A PORTION OF A RECORDING LAYER THROUGH WHICH A TEST BEAM TO FIND AN OPTIMUM RECORDING POWER PASSES BEFORE PERFORMING OPTIMUM POWER CONTROL (OPC) ON A DESIRED RECORDING LAYER AND PERFORMING OPC ON THE DESIRED 15 RECORDING LAYER. THE METHOD AND APPARATUS ALLOW DATA TO BE RECORDED AFTER PERFORMING A TEST TO DETERMINE AN OPTIMUM RECORDING POWER, THUS PROVIDING EFFECTIVE RECORDING/REPRODUCING QUALITY.