| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a roll call system for allowing a roll called person to appropriately receive a roll call. <P>SOLUTION: The roll call system comprises a roll-calling side device used by a roll call manager, a roll-called side device used by a roll called person and for sending a sound and an image that indicate a state of the roll called person to the roll-calling side device, a portable device carried by the roll called person, and a passage permission determination device for determining whether or not to permit a passage of the portable device. The roll-calling side device enables a roll call through the roll-called side device in response to a roll call request received from the roll-called side device, the roll-calling side device sends the roll-called side device an instruction of writing information to allow the passage permission determination device to permit a passage of the portable device, the roll-called side device writes the information on the portable device (S183) when receiving the instruction from the roll-calling side device (YES at S181, S182), and the passage permission determination device permits the passage of the portable device based on the information written on the portable device. <P>COPYRIGHT: (C)2012,JPO&INPIT |
