US Patent 7375744 Camera system, camera control method and program

A camera system for capturing an image of a predetermined scope, having a plurality of monitoring cameras operable to change a monitoring area respectively, comprises a camera controller, when changing its monitoring area of one of the monitoring cameras, operable to control the other monitoring cameras to monitor a dead area that is outside of the monitoring area of the monitoring camera. When the camera controller controls the monitoring camera to zoom into a subject, the camera controller may control the other monitoring cameras to monitor the dead area of the monitoring area by zooming out the subject.