Optical Disk File Memory for Computer Use

Optical disk file memory using a laser diode is one of the most promising devices for large capacity computer data storage. Several companies have been developing optical disk file memories during the past few years. However, almost all of these memories were designed for document data storage which does not require low error rate and interactive operation with computer. Recently, we have developed a highly reliable optical disk file memory for computer application. The basic specifications, features, and system structure of the developed optical disk file memory and several approaches for reliability improvement are described.