公开(公告)号：EP3792597A1

公开(公告)日：2021-03-17

申请号：EP19800015.0

申请日：2019-05-09

申请人： Yorozuya, Kikuhiro

发明人： Yorozuya, Kikuhiro

IPC分类号： G01C21/34 ,  G01C21/26 ,  G08B25/04 ,  G08G1/137 ,  G09B29/00 ,  G09B29/10 ,  H04M11/00

摘要： The present invention includes a search route processor that calculates a plurality of search routes between locations of a plurality of searchers belonging to a predetermined area and a search target based on position information of the search target acquired from a position information terminal held by the search target, and a plurality of portable terminals that is held by the plurality of searchers and displays the plurality of search routes calculated by the search route processor and personal information that identifies the search target. The search route processor compares the plurality of search routes with each other to identify a shortest first search route, issues a search command to corresponding one of the searchers on the first search route to cause the searcher to start searching along the first search route displayed on corresponding one of the portable terminals, updates the position information of the search target and the search routes as the search target moves, when a second search route is shorter than the first search route, issues a search command to corresponding one of the searchers on the second search route to cause the searcher to start the searching along the second search route displayed on corresponding one of the portable terminals.