Abstract
With the advent of the Broadband era, the requirements for recording media and device have changed on a large scale. Especially, with the spread of digital broadcasting, digital high vision have started, it has caused a strong desire to provide a system that can write and read the signals in this class. This report is to describe DVR-Blue with optical disc technology, which consists of the combination with GaN laser, HighNA, thin cover layer and recording materials of phase change, and 120mm optical disc with a capacity of 22.5Gbytes and a recording velocity of 35Mbps. Furthermore, a future view is discussed.
