| 摘要 |
PROBLEM TO BE SOLVED: To reject an intruded floppy-disk, etc., which does not have right and whose history is not clear to a system by performing detection, reading and identification confirmation of a disk such as an external floppy-disk. SOLUTION: One or more than several identification flags 11 which are attached to a floppy-disk consist of numeric bar codes, or marks or information, etc., which can be identified by a sensor that is provided inside a computer. Also, positions of showing the flags 11 are formed so that they may mutually correspond to the position of the sensor, and the sensor directly and also effectively reads and identifies the flags 11 when a reader such as a magnetic sensor or an optical sensor of the computer reads the floppy-disk 1. When a floppy-disk whose identification flags 11 are not accurate or are not marked is inserted, a disk drive mechanism of the computer, an optical disk drive, a keyboard, a mother board circuit, etc., are controlled and the operation is immediately stopped. |
