Patent 7643722 was granted and assigned to Hitachi on January, 2010 by the United States Patent and Trademark Office.
Control data, such as a store-request, and video data are sent via different paths to video storage. More specifically, a load balancer sends the control data from a camera to the storage device, and the camera sends the video data to video storage. By separating the transmission paths of the control data and the video data, it is possible to vary the method for protecting the video storage, depending on the type of data, and to intensively check the control data which are smaller in data quantity, thereby realizing both a high security level and a cost reduction for protecting video storage.