Information management system, portable communication terminal, data bank device, service information management device, authentication device, data management method, portable communication terminal control method, database control method, service information management method, and program
JP2013235008A
Indoor transmitter, position information providing system, information management device, and program for making computer function as information management device
JP2012063274A
Navigation signal transmission device and position information providing device
JP2011095086A
Navigation signal transmitter and method of generating navigation signal
JP2010271183A
Indoor transmitter, position information providing system, information managing device, and program for allowing computer to function as the information managing device
JP2010034836A
Position information providing system, position information providing apparatus, and indoor transmitter
JP2009133731A
Position information providing system and indoor transmitter
JP2008096452A
Position information providing system, position information providing device, and transmitter
JP2009085928A
System providing positional information, and indoor transmitter
JP2007278756A
Position information providing system and apparatus, and indoor transmitter
JP2005083888A
Rtk positioning system and positioning method therefor
