Real-Time Write Strategy Optimization Method for Optical Discs

An optimization method of the write strategy for optical discs to realize stable recording within the whole area of each optical disc is proposed. In this method, the write strategy is continuously optimized in the real-time base during the recording operation against the variation of recording characteristics in optical discs, in accordance with the recording position in the radial direction and environmental conditions. The optimization algorithm to select the suitable write strategy parameters to be optimized was established with reference to the database previously prepared. The effectiveness and lack of side effects in this method are experimentally confirmed using optical discs.