POSITION INFORMATION PROVIDING SYSTEM INDOOR TRANSMITTER AND METHOD FOR PROVIDING POSITION INFORMATION

摘要

It is possible to provide position information at a poison where no radio can be reached. An indoor transmitter can programmably modify the format of a transmission signal. A position information providing device executes a process including: a step (S610) which acquires a received positioning signal; a step (S612) which identifies a transmission source of the positioning signal; a step (S622) which acquires a navigation message contained in the positioning signal if the transmission source of the positioning signal is outdoors; a step (S624) which executes a process for calculating the position according to the signal; a step (S632) which acquires message data from the positioning signal if the transmission source of the positioning signal is indoors; a step (S634) which acquires coordinate values from the data; and a step (S650) which displays the position information according to the coordinate values.