A constant volume combustor device includes detonative combustion. A system for managing rules used for processing claim data related to provision of healthcare to a patient includes an interface processor for acquiring data representing rules from a plurality of different sources. Also, the image displaying device acquires image data from a relevant terminal while instructing other terminals to suspend transmission by the image data acquisition controlling means, thereby suspending transmission of image data. After the device determines the criteria that excessive IP packets have in common, the device then determines rules to identify the packets that meet such criteria and filters or blocks so identified packets.