| 摘要 |
PURPOSE: The CCTV system controls the monitoring direction of a camera(201) using a radio frequency from a distance. The radio frequency uses the same frequency band as a frequency used in transmitting an image signal from the CCTV system. CONSTITUTION: The part receiving an image sends a control signal using a control terminal hanging on a wireless remote controller or on a receiver body, and the monitoring camera observes periodically whether a signal controlling the direction of the camera is received. If a direction control signal is received, the monitoring camera changes the monitoring direction by driving a direction control motor. The CCTV system comprises a watching part controlling the monitoring direction of the camera by receiving the control signal as transmitting image and voice, and a monitor part having the function of controlling the camera direction of the watching part wirelessly.
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