| 摘要 |
PURPOSE:To protect data recorded in the information recording medium from being broken down by a computer virus. CONSTITUTION:The information recording medium such as a magneto-optical disk, etc., is provided with a read-only storage area in which a virus check program is recorded as a device driver software. When a command for writing external data is generated in a rewritable data recording area 2 of the information recording medium, whether a computer virus exists in its external data or write command or not is checked by this virus check program. The virus check program is recorded in the read-only storage area 1 by a manufacturer of the information recording medium, therefore, there is no possibility of infection of a virus, and also, when a computer system is operated, it rises automatically, therefore, a burden for a processing is not imposed on a user. A breakdown by the computer virus of data recorded in the information recording medium, and expansion of the computer virus through the medium of this information recording medium are both prevented. |
