Charging of a camera and backup of data are concurrently executed to enable picking up an image regardless of a remaining available memory. As the camera is attached to a cradle, image data for the image picked up by a camera module of the camera is directly transferred to and recorded in a HDD of the cradle. Image data, already recorded in the flash memory of the camera, is backed up by the HDD of the cradle. Further, the cradle allows a charging circuit to charge a rechargeable battery of the camera using electric power supplied via an AC cord. Also, the cradle has a tripod bore through which the camera is fixed to a tripod for picking up the image.