Surface Response Methodology for Write Strategy Optimisation in Optical Drives

A method for optimising write strategies in optical drives is proposed which is rigid and gives additional information on the reliability of the calculated results. In addition, the mathematical tool is used to examine the typical differences in write strategies with respect to parameter variations. As a test platform, digital versatile discs of the recordable type (DVD+R) are used at a speed of 8×. A comparison is made between the “castle” strategy and the blocked “thermally balanced” strategy. The differences are verified on three different discs. It appears that the write strategy determines the interdependence between write strategy parameters, while the disc brands differ in the optimum settings of the parameter. The presented method and experiments once more show the power of mathematical tools for understanding and applying physical processes.