Bidirectional Delta information updating method of navigation electronic map

Abstract

The invention provides a bidirectional Delta information updating method of a navigation electronic map, which comprises a bidirectional updating of a map databank of a map data provider and a map databank of a user terminal. The bidirectional Delta information updating method is characterized in that geographic information differences and modified Delta information are converted into Delta data through a map element unique identification code, the databank of the map data provider can be modified in time, and the Delta information can be released directly or sent to the user terminal according to a user requirement in order to ensure the map databank of the user terminal to update in time. By directly providing Delta information modification, the invention solves the problems of unidirectional batch updating which is only provided by a manufacturer to customers, inflexible updating content which is generally aiming at certain area with monoblock updating, high cost and over-long time on map format conversion, and the like in the traditional navigation electronic map, and ensures the map data provider to acquire the Delta information in time and release the Delta information to the map user.

Description

technical field [0001] The invention relates to a method for updating a navigation electronic map, in particular to a method for bidirectionally updating the map based on geographic information differences and changes. Background technique [0002] With the development of technology, the application of navigation electronic map is more and more extensive. Since the second half of 2007, the application of navigation electronic map has been expanded to mobile phones, especially the emergence of ordinary multimedia GPS function mobile phones, and the navigator market has expanded to popular consumers. market, people have higher requirements for location-based services, and the update method of the navigation map in the prior art is usually to send the data to the map product center after the map is published, and the CD is produced by the map product center and sent to the user terminal or Notify the end user to go to the designated location or website to update the map data. ...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to change the unidirectionality of the batch update of the existing navigation electronic map, which is only provided by the manufacturer to the customer, and the update content is not flexible, and usually must be targeted at a certain area, the cost of the whole block update, map format conversion is too high, and the time is too long For long-term issues, it is possible to obtain Delta information in a more timely manner and release Delta information to map users

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