Patent ID: 7573793
Filing Date: 2009-08-11
Classification: G11B

Abstract:
1. A method of determining optimum power values of optical beams emitted from at least first and second optical pickups provided in an optical disk recording apparatus, the method comprising the steps of: performing test recording of test data with each of the first and second optical pickups such that each of the first and second optical pickups is operated to irradiate an optical beam onto an optical disk for recording the test data on a respective test area of the optical disk; reproducing with one of the first or second optical pickup, the test data recorded in the respective test areas with the first and second optical pickups; judging β values from the test data reproduced with the one optical pickup from the test areas of the optical disk that were recorded using the first and second optical pickup; and determining, from the judged β values, the optimum power values of the optical beams for each of the first and second optical pickups.