Patent ID: 8477579
Filing Date: 2013-07-02
Classification: G11B

Abstract:
1. A writing method for an optical disk drive, comprising: (1) receiving a command to write a disc; (2) implementing an optimum power control (OPC) test for a predetermined data transfer rate to obtain a relation of beta parameter to writing power; (3) acquiring a writing power at the predetermined data transfer rate with a target beta parameter according to the relation of the beta parameter to the writing power; (4) calculating ratios of energy areas of write strategies for every data transfer rate with the predetermined data transfer rate, wherein each of the energy area is a multiplication product of a modulation writing power of write strategies of each mark and an interval time; (5) multiplying the ratio of the energy area by the writing power at the predetermined data transfer rate to produce the writing power at each data transfer rate; and (6) finishing writing data.