Portable terminal for position information correction, geographical information providing device and method

Abstract

The invention provides a portable terminal for position information correction, geographical information providing device and method. The portable terminal comprises: image catching unit for getting the image of surrounding area; image analyzing unit for extracting the geographical information in the image obtained from the image catching unit, transmitting together with the position information based on network to the geographical information providing device; service treatment unit based on the position for transmitting the searched geographical information by the geographical searched information and position information based on the network from the geographical information providing device and correcting the position information based on the network.

Description

technical field [0001] The present invention relates to a position information correction system and method thereof, in particular to using geographic search information sent by a portable terminal, or surrounding images and network-based position information to retrieve corresponding detailed position information from a geographic information database and send it to the portable terminal The geographic information providing device of the computer and the method thereof; the geographical retrieval information extracted from the surrounding image, or the surrounding image and the position information based on the network are sent to the geographic information providing device, thereby using the detailed geographic information provided by the geographic information providing device Location information, a portable terminal for correcting network-based location information and its method; obtain network-based location information and send it to a geographic information providing d...

AI Technical Summary

Problems solved by technology

[0007] First of all, the GPS method uses the principle of triangulation to measure position information. The problem is that an expensive GPS receiver needs to be added for position identification. Position recognition is done correctly, it takes a long time for initial position recognition

[0011] Compared with the existing GPS method, this network-assisted GPS method has the advantage of reducing the time required to obtain initial position information, but the problem is that an expensive GPS receiver needs to be added to obtain the position information, and indoors and buildings are densely packed. In blind areas such as areas, it is difficult to obtain correct location information due to signal attenuation

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