Abstract: The present invention relates to an apparatus for broadcast data transmission and a method thereof A method for transmission of broadcast data includes a plurality of information that includes setting up a transmission period by information/time slot for each of the plurality of information; receiving information transmitted from outside information providing servers; storing the received information; generating broadcast data including the stored information based on the transmission period by information/time slot in every transmission period of broadcast data; and broadcasting the generated broadcast data.

Abstract: The present invention relates to a traffic information providing apparatus and an operating method. The method includes receiving real time traffic information, storing sectional traffic information, dividing screen information currently displayed on the display unit into unit areas, selecting the unit areas sequentially, detecting additional traffic information on the corresponding unit areas from the sectional traffic information stored in the step of storing according to information on the selection, and displaying the additional traffic information. Accordingly, the present invention aims to decrease the danger of traffic accidents and provides convenient selection of search location for real time traffic information to a user.

Abstract: A traffic information display method includes creating a highest-level traffic information selection menu among traffic information categorized in multiple levels, and displaying the created traffic information selection menu, creating a low-level menu including associated travel speed data, and displaying the created low-level traffic information selection menu and repeating the creation of the low-level menu until the lowest-level menu is displayed.

Abstract: A traffic information providing method and apparatus. The traffic information providing a method and apparatus provides for collecting real-time traffic information and supplementary information; broadcasting the collected real-time traffic information; storing the collected supplementary information in a supplementary information database; receiving a supplementary information request from a user who confirms the broadcast real-time traffic information; searching supplementary information corresponding to the received supplementary information request; and delivering the searched supplementary information to the user. In accordance with user requests, traffic information services differentiated among the users can be delivered. A benefit can also be realized among traffic information service providers, mobile network operators and the users.

Abstract: Disclosed is a navigation system that converts route guidance information into network data and determines the deviation of a mobile object from a route using a map-matching probability that shows a degree of match between a current location and network data.

Abstract: A method and an apparatus for detecting location of a movable body in a navigation system comprising a map data detector for detecting map information of a region corresponding to location information from an external digital map storage on the basis of the location information of the movable body transmitted from sensors sensing the location and traveling information of the movable body; a memory for storing the map information detected from the map data detector; a filter for computing an optimum location of the movable body including road error included in the map information on the basis of the location and traveling information of the movable body transmitted from the sensors; and a map-matching unit for receiving the optimum location information of the movable body from the filter and correcting the optimum location information by matching the optimum location information and the map information stored in the memory.

Abstract: A method and apparatus for measuring the velocity of a vehicle are provided. An acceleration measurement received from an accelerator and RGI data received from an external information server are stored and an irregularity constant of the accelerator is determined. It is determined whether the vehicle is in a stationary state by analyzing the acceleration measurement. If the vehicle is not in the stationary state, the inclination angle of a road on which the vehicle is traveling is calculated using a plurality of three-dimensional shape points included in the RGI data. A gravity acceleration component is compensated for from the acceleration measurement using the road inclination angle. The velocity of the vehicle is calculated using the compensated acceleration measurement.

Abstract: A navigation system including a map data server and a navigation terminal. The map data server stores map data produced for the map information of a specific region. When an external manager modifies the map data, the server produces and transmits map modification command information corresponding to the modified map data. The navigation terminal stores map data corresponding to the map data stored in the map data server, receives and analyzes the map modification command information, and modifies the previously stored map data according to the analyzed result. Therefore, map data can be updated using the small amount of map modification command data.

Abstract: An off-board navigation system and method for calibrating an error using the same. A server provided in the off-board navigation system calculates a predetermined path using a pre-stored map in response to a request, generates calibration information based upon the calculated path, and transmits the calculated path and the calibration information. A terminal provided in the off-board navigation system requests that the server calculate the predetermined path, receives the calculated path and the calibration information, compares the calibration information and position information measured by sensors embedded in the terminal, and compensates for the sensors. The off-board navigation system can calibrate a position error between map information and actual traveling information, and hence can improve the accuracy of navigation service.

Abstract: A method and an apparatus for detecting location of a movable body in a navigation system comprising a map data detector for detecting map information of a region corresponding to location information from an external digital map storage on the basis of the location information of the movable body transmitted from sensors sensing the location and traveling information of the movable body; a memory for storing the map information detected from the map data detector; a filter for computing an optimum location of the movable body including road error included in the map information on the basis of the location and traveling information of the movable body transmitted from the sensors; and a map-matching unit for receiving the optimum location information of the movable body from the filter and correcting the optimum location information by matching the optimum location information and the map information stored in the memory.