| 摘要 |
The present invention relates to an apparatus and method for operating a day and night mode of a monitoring camera by measuring a brightness in a no video signal interval which are implemented in a such a manner that when a control unit detects a non video signal interval from a video signal from a camera which photographs a photographing object zone, a state of the current lighting unit is set to an off state, and a measuring signal for operating a detection unit is outputted, and a brightness of the current photographing object is measured based on the detection signal from the detection unit, and it is judged whether the brightness of the current photographing object is above a critical value that it is not needed to operate the lighting, and when the brightness of the same is above a critical value, the mode is set to a day mode, and a control signal is generated for maintaining the current off state of the lighting unit and is outputted to the lighting unit, and when the brightness of the same is below a critical value, the mode is set to the night mode, and a control signal is generated for turning on the lighting unit and is outputted to the lighting unit.
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