DEVICE AND A METHOD FOR MEASURING A POSITION BY USING A GLOBAL POSITIONING SYSTEM AND A VISIBLE LIGHT COMMUNICATION WHERE POSITION INFORMATION IS SUPPLIED FROM A VISIBLE LIGHT COMMUNICATION DEVICE AROUND THE MEASURING DEVICE WHEN THE POSITION IS MEASURED BY USING A GLOBAL POSITIONING SYSTEM SIGNAL

摘要

PURPOSE: A device and a method for measuring a position by using a global positioning system and a visible light communication are provided to measure a position in a dead zone by using a visible light communication when the position is measured by using a global positioning system signal even if mobile communications or wireless internet communications are not available.;CONSTITUTION: A mobile terminal comprises a GPS receiver (102), a GPS position calculation unit (106), a visible light communication device position calculation unit (116), and a control unit. The GPS receiver receives a GPS signal. The GPS position calculation unit measures a first position by using the GPS signal. A visible light signal transceiver transmits or receives a visible light signal. The visible light communication device position calculation unit calculates a position of a visible light communication device by using visible light communication device position information through the visible light signal transceiver. The position calculation unit calculates a third position by using a position of the visible light communication device and a second position in which is the previous position of the first position when the first position exceeds a predetermined error range. The control unit calculates the third position by activating a visible light communication mode and controlling the position calculation unit as the first position exceeds the predetermined error range.;COPYRIGHT KIPO 2013;[Reference numerals] (102) GPS receiver; (104) GPS signal processing unit; (106) GPS position calculation unit; (108) First storing unit; (110) Control unit; (112) Visible light transceiver; (114) Visible light signal processing unit; (116) Visible light communication device position calculation unit; (118) Second storing unit; (120) Position calculation unit; (130) Display unit