Patent ID: 8862396

Claim:
A positioning device comprising: a movement measuring sensor for measuring a relative positional change, the relative positional change being independent of geographic location of the positioning device; a GPS receiver configured to provide a present position information associated with geographic location of the positioning device; a passing position calculation control unit configured to calculate a relative movement from the relative positional change measured by the movement measuring sensor; and a processor configured to receive the present position information from the GPS receiver and to determine whether the present position information is measurable by the GPS receiver, wherein: positioning is determined from the present position information provided by the GPS receiver in response to the processor determining the present position information is measurable by the GPS receiver, and the relative movement is calculated by the passing position calculation control unit in response to the processor determining the present position information is not measurable by the GPS receiver, and in response to the present position information being determined by the processor to be provided by the GPS receiver after a period of time of not providing the present position information by the GPS receiver, the processor determines revised position data of a point which has been passed and which has been determined from the relative movement independent of geographic location, the revised position data being determined on the basis of a difference between position data of a first geographic position point obtained by the processor in response to the GPS receiver providing the present position information after a period of time of not providing the present position information by the GPS receiver and a last geographic independent point determined by the movement measuring sensor.