| 摘要 |
<p>PURPOSE:To provide the room entrance/exiting card control unit which does not increase in size and is low in cost and fast in processing speed even when the number of room entering persons is limited and illegal room entrance and exiting are restricted. CONSTITUTION:The room entrance/exiting card control unit is equipped with a control part 14 which stores the ID information of a card 11 when an external card reader 12 installed outside the room reads the card and erases the ID information of the card stored at the time of room entrance when an internal card reader 13 installed in the room reads the card and a room entrance/exiting restricting means which restricts the room entrance if the ID information of the same card is already stored in the control part 14 when the external card reader 12 reads a card and also restricts the room exiting unless the ID information of the same card is stored in the control part 14 when the internal card reader 13 reads a card.</p> |
