PURPOSE: To display the existing position of a specific person by allowing the specific person to carry a confirming unit generating currents in a group of conductors provided in many spaces respectively.
CONSTITUTION: Rooms 111, 121,..., 1m1 are provided on the floor 1 of a hotel, and processing sections (conductor loops) 112, 122, 1m2 are fitted to the rooms respectively. Their outputs are transmitted to a terminal device 1, and the necessary information is displayed on an indicator 1H. When a confirming unit 1 (f1) is carried by a specific person and exists in the room 1m1, the resonance circuit of the confirming unit 1 and the conductor loop of the processing section 1m1 form an oscillating system to be oscillated, and a current flows in the conductor loop. The existence of the confirming unit 2, i.e., the specific person, is reported to the terminal device 1. Each floor has the same structure as that of the floor 1, terminal devices 1, 2,..., (n) are connected to each other and to the central station CT. The information is collected to the central station CT and displayed on an indicator CH.
| JP5101281 | GPS receiver and related methods and equipment |
| WO/2002/091012 | ALTITUDE ESTIMATION SYSTEM AND METHOD |
| WO/2010/052496 | IMPROVEMENTS TO ASSISTED POSITIONING SYSTEMS |
OSAWA YUKIFUMI
KANEKO YUKIHIRO
NAKAMURA KAZUHARU
NODA KATSUHIKO
