Method of Compressing GPS Data, Method of Restoring GPS Data, and GPS Device

A method of restoring global positioning system (GPS) data, which is implemented by an external device, the method comprising:

• providing a stream in a file format which includes a header including a sampling rate in accordance with a communication environment for communication with the external device with a predetermined band and information related to a data capacity that matches a maximum value of displacement according to a difference which can occur between coordinate values in a moving object in which a GPS device is mounted, a reference data field including a predetermined initial reference time and reference coordinate values, and a displacement data field composed of at least one of displacement data generated by encoding each displacement value between corresponding coordinate values at each time interval of the sampling rate;
• and
• restoring the coordinate values corresponding to a moving path of the moving object in connection with GPS source data on the basis of the sampling rate, the information related to the data capacity, the reference time, the reference coordinate values, and the displacement data.

A global positioning system (GPS) device comprising:

• a sampler configured to receive coordinate values related to source data of GPS information at a sampling rate in accordance with a communication environment in which the GPS device mounted in a moving object communicates with an external device with a predetermined band;
• and
• a calculation storage configured to calculate a displacement value of corresponding coordinate values at each time interval of the sampling rate, generate displacement data by encoding each displacement value between the corresponding coordinate values at each time interval of the sampling rate according to a allocated data capacity which matches a maximum value of displacement in accordance with a difference which can occur between coordinate values of the moving object, and store the displacement data in a predetermined device.