| 摘要 |
A vehicle-mounted surveillance device which includes at least one camera and a device body equipped with a clock, wherein an image taken by the camera is electrically converted into image data, time data is generated based on a time obtained by the clock, and the time data is embedded in the image data so that record data is generated and sequentially recorded on an external recording medium, the device further including a time correction unit which is located on the device body and includes a time signal receiving circuit which receives a radio wave embedded with time information, the time correction unit automatically correcting the time of the clock based on the periodically received time information.
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