Approach for high speed recording of 4.7 GB digital versatile disc-recordable

The demand for digital versatile disc-recordable (DVD-R) is currently under going explosive growth and both higher speed recording and higher density a re required. This paper examines the potential for achieving 1x-speed recor ding on 4.7 GB DVD-R media. 1x-speed and 2x-speed recording are examined ex perimentally and by computer simulation, and actual recorded signals are fo und to be in good agreement with predictions based on computer simulation o f thermal interference profiles. Based on these results, the heat design te chnology needed to realize high speed recording is identified and the poten tial for 4x-speed recording is demonstrated theoretically.