| 摘要 |
PURPOSE:To use an additional optical disk memory in the same way as a rewriting-shaped optical disk by providing a magnetic body part at the peripheral of a DRAW type optical disk and unifying the optical disk memory and the magnetic disk memory. CONSTITUTION:A magnetic body part 1 is evaporated at the peripheral part of a DRAW type optical disk part 2 and a memory is constituted. By combining and using a magnetic head 3 and an optical head 4, the optical disk part 2 functions as the DRAW type memory and the magnetic body part 1 functions as a magnetic disk memory. Consequently, by writing the file control information in the magnetic body part 1, the data and the file control information can be controlled by one medium and the memory can be used as if it is a rewriting type optical disk. |
