ation Y in the registered appliances table 112 shown in FIG. 51, and an object, e.g. a room in which the target appliances are placed, is determined by the vector data 1050. [0377] In the bottom line of registered appliances table 112 in FIG. 51, for example, an information usera/group/1fld/cam02 is stored in the grouping information column of registered appliance ID No. 4. [0378] This indicates t