Patent ID: 8854279

Claim:
A position detecting system comprising: an information transmission device, comprising a plurality of transmitters, for transmitting predetermined information; a mobile terminal for receiving the predetermined information; and a control device capable of communicating with the mobile terminal, the mobile terminal including: a first display unit for displaying a first image; a first receiving unit for receiving the predetermined information transmitted from the information transmission device; a first image processing unit for changing the first image in accordance with the predetermined information received by the first receiving unit; operation elements for accepting an instruction inputted by a user; and a transmission unit for transmitting, to the control device, current positional information corresponding to the predetermined information received by the first receiving unit, said current positional information generated by a current positional information generating unit, and operation information indicating the instruction inputted by the user through the operation elements, the control device arranged separately from the mobile terminal and the information transmission device and including: a second display unit for displaying a second image; a second receiving unit for receiving the current positional information and the operation information transmitted from the mobile terminal; and a second image processing unit for changing the second image in accordance with the current positional information and the operation information received by the second receiving unit, wherein the information transmission device transmits the predetermined information for a predetermined number of times, and the current positional information generating unit measures a number of times each predetermined information transmitted by a subset of the transmitters during a predetermined time period was successfully received by the first receiving unit, and generates the current positional information based on said measured number of times said each predetermined information was successfully received.