Patent 9900546 was granted and assigned to Mitsubishi Electric Corporation on February, 2018 by the United States Patent and Trademark Office.
A monitoring system has a monitor connected to a monitoring camera and a monitoring recorder via a network. The monitor checks whether the monitoring recorder is in a recordable state or in an unrecordable state of monitoring video data, and if the monitor confirms an unrecordable state of the monitoring recorder, the monitor 3 transmits a control signal for instructing the monitoring camera to start video recording. Receiving the control signal instructing to start the video recording, the monitoring camera records the monitoring video data it takes in its own storage medium.