MANHASSET, N.Y. Japan-based TDK has developed a single-sided recordable blue laser disc with a capacity of 200 Gbytes, surpassing the current 25-Gbyte capacity for single-layer Blu-ray discs and 50 Gbytes for dual-layer discs.
The 200-Gbyte capacity doubles the capacity of TDK's existing 100-Gbyte Blu-ray prototype, storing approximately 18 hours of high definition video, said the company.
TDK has been on the forefront of Blu-ray Disc media development, shipping 25-Gbyte rewritable discs since April
The company's 100-Gbyte prototype disc uses four 25-Gbyte layers to reach its capacity. For the 200-Gbyte disc, TDK has stretched the physical margins of the Blu-ray Disc format, enabling a disc to store up to 33.3 Gbytes per layer while staying within the tolerances of the BD playback specifications.