| 摘要 |
A monitoring camera system including a plurality of monitoring cameras, a plurality of monitors, a multiplexer for switching a connection between the monitoring camera and the monitor, and a plurality of controllers for remotely controlling the monitoring cameras through a communication control line. Each of the controllers remotely control the monitoring cameras by sending to the communication control line a command including an address assigned to the monitoring camera which is a control object and the contents of control. In controlling a monitoring camera providing video to a predetermined monitor, a controller sends a number of the predetermined monitor to the multiplexer, and inquires of the multiplexer about the address assigned to the monitoring camera providing the video to the predetermined monitor. The multiplexer transmits the address assigned to the monitoring camera providing the video to the predetermined monitor to the controller that is a source of the inquiry.
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