paraver
Power Member
While DVD-R recording speeds have finally reached 8x, Philips is taking DVD+R technology to the next level. According to Philips, they have been able to write to DVD+R media at 16x using an experimental setup in their labs.
Philips has demonstrated the world's highest ever recording speed of recordable DVD (DVD+R) in an experimental set-up built at Philips Research. The system is able to record 16 times faster ('16x') than the normal playing speed of video DVDs, allowing to burn a DVD+R with video or data up to the maximum capacity in less than 6 minutes. This recording speed is close to the highest possible speed, which means that this represents the ultimate performance of any DVD recording system. The results were presented at the International Symposium on Optical Memory (ISOM, Nara, Japan, 3-7 November) and received the best-poster award there. The Philips technology will form the basis for the 16x DVD+R recording standard to be defined by the DVD+RW Alliance in the course of 2004...
...Besides the write strategy, improvements on the recorder set-up were needed to realize recording at 16x speed. Especially the design of an accurate and stable system for tracking and focusing the laser beam to the right position on the disc was challenging. Another demanding task was the development of fast laser driving electronics, which runs at a 420 MHz clock at 16x DVD speed. Furthermore, a prototype high-power laser was utilized to achieve the recording power needed. Finally, Ricoh provided the DVD dye discs for the recording experiments.
Fonte: cdrlabs.com
Philips has demonstrated the world's highest ever recording speed of recordable DVD (DVD+R) in an experimental set-up built at Philips Research. The system is able to record 16 times faster ('16x') than the normal playing speed of video DVDs, allowing to burn a DVD+R with video or data up to the maximum capacity in less than 6 minutes. This recording speed is close to the highest possible speed, which means that this represents the ultimate performance of any DVD recording system. The results were presented at the International Symposium on Optical Memory (ISOM, Nara, Japan, 3-7 November) and received the best-poster award there. The Philips technology will form the basis for the 16x DVD+R recording standard to be defined by the DVD+RW Alliance in the course of 2004...
...Besides the write strategy, improvements on the recorder set-up were needed to realize recording at 16x speed. Especially the design of an accurate and stable system for tracking and focusing the laser beam to the right position on the disc was challenging. Another demanding task was the development of fast laser driving electronics, which runs at a 420 MHz clock at 16x DVD speed. Furthermore, a prototype high-power laser was utilized to achieve the recording power needed. Finally, Ricoh provided the DVD dye discs for the recording experiments.
Fonte: cdrlabs.com