The 5-inch (130 mm) disk has a holographic system that writes and reads data with a blue laser. The laser beam splits into two beams, a signal beam that convey data and a reference beam. Data to be stored is encoded into data pages, which are written in multiplex in the storage media.
The company carries a 400-Gbyte tape cartridge for computer backup, but a disk form should be available if users want to access the data, said the spokesman.
Hitachi Maxell is aiming to develop a second-generation holographic disk with a 400-Gbyte capacity by2007.
Tokyo-based venture company Optware Corp. is developing a 120 mm disc system and demonstrated practical recording and read out of a video footage last August. The company also intends to introduce a holographic disk system next year.