Patent ID: 8359324
Filing Date: 2013-01-22
Classification: G06F

Abstract:
1. A geographic information system using map data including configuration data provided with time information and attribute data corresponding to an attribute of an object contained in the map data, the attribute data being provided with positional information and time information, comprising: a processor, a memory coupled to the processor, a communication interface coupled to the processor, and a user interface coupled to the processor; an information import module for receiving an input of a geographic area of an object to be retrieved and a search key which does not include time information; a map retrieval module configured to use the geographic area and the search key from the information import module while not using any designated date/time, as search parameters for extracting configuration data, for which the input geographic area of the object to be retrieved and an area represented by the configuration data at least partially overlap each other, from the map data; a correlation module for correlating the configuration data with the attribute data identical with the search key, for which the area represented by the extracted configuration data overlaps the positional information, according to the time information provided to the configuration data and the time information provided to the attribute data; an output module for outputting the configuration data and the attribute data correlated with each other; and each of the time information provided to the configuration data and the time information provided to the attribute data indicates a time period in which the object existed or is to exist, the map data is stored in a plurality of block areas in a divided manner; the map retrieval module specifies the block area of the map data, which includes the input geographic area of the object to be retrieved, and retrieves the configuration data in the specified block area; and the correlation module extracts the attribute data for which the retrieved area of the configuration data and the positional information overlap each other; checks the extracted configuration data and the attribute data by using the positional information provided to the attribute data; correlates a part of the checked configuration data and a part of the checked attribute data, for which the time information provided to the configuration data and the time information provided to the attribute data overlap each other, with each other; and selects a piece of the attribute data, which is identical with the search key, from the part of the attribute data correlated with the part of the configuration data.