LOCATION RETRIEVAL SYSTEM, TERMINAL DEVICE TO BE RETRIEVED, CONTROL METHOD OF TERMINAL DEVICE TO BE RETRIEVED, CONTROL PROGRAM OF TERMINAL DEVICE TO BE RETRIEVED, AND COMPUTER READABLE RECORDING MEDIUM STORING CONTROL PROGRAM OF TERMINAL DEVICE TO BE RETRIEVED

摘要

PROBLEM TO BE SOLVED: To provide a location retrieval system or the like capable of providing position information having necessary and sufficient positioning accuracy, while reducing power consumption of a terminal device to be retrieved.;SOLUTION: This system has a location information request receiving means for receiving a location information request including retrieving terminal position information showing the position of a retrieving terminal device 80 from a management device 50 communicable with the terminal device 20 to be retrieved and the retrieving terminal device 80, a plurality of position information generation means for transmission having different power consumptions and positioning accuracies, a detailed position necessary range inside/outside determination means for determining whether the distance between the position of the retrieving terminal device 80 shown in retrieval side position information and the position of the terminal device 20 to be retrieved shown in approximate position information on the side to be retrieved is within a detailed position necessary range or not, and a position information generation means for relative position reference transmission for selecting one position information generation means for transmission from among the plurality of position information generation means for transmission based on a determination result by the detailed position necessary range inside/outside determination means, or the like.;COPYRIGHT: (C)2006,JPO&NCIPI