CN101154222A - A system and method for updating maps online - Google Patents

Abstract

The present invention relates to a system for updating maps online. The system includes a terminal, which is provided with a GIS engine module; a first map database; a map upgrade module; a first communication module; The first communication module is connected through a network; the map version control module is connected with the second communication module; the second map database is connected with the map version control module and the second communication module. The present invention also relates to a method for updating a map online, the method comprising: a first communication module sending a map update connection request to a map server through a network; a second communication module sending the map update connection request to a map version control module; The version control module calculates the second map data; the second communication module sends the second map data to the terminal; the first communication module receives and stores the second map data in the first map database.

Description

A system and method for updating maps online

technical field

The present invention relates to a system and method for updating maps online, in particular to a system and method for updating maps online in which a network-side map server updates a terminal-side map library from time to time by dividing map data into blocks.

Background technique

With the continuous progress of the society, the range of people's activities is increasing day by day, and location-based services are gradually accepted and popularized by users. At the same time, with the development of wireless communication technology, wireless communication network can provide positioning functions with different precision, such as Cell-ID, E-OTD, A-GPS and so on. The penetration rate of wireless communication is also constantly increasing. Therefore, ordinary users can use location-based related services, such as positioning, information point query, navigation and other functions, through the wireless communication network through the wireless terminal they carry.

With the development of vehicle navigation systems, people use these navigation systems from time to time to realize the query of the map information they need, but in the process of using these map navigation, the map of real life may be constantly changing. The car map will not be updated from time to time, so it is very inconvenient to update the map: many users who have purchased the original car navigation need to drive to a specially designated place such as a 4S shop to update the map, usually once every six months. Everyone knows that the construction of urban roads and bridges is changing with each passing day, and the routes change frequently. Once the map information is not updated in time, the navigation effect will be counterproductive. Even for post-installed navigation products, users need to use CDs or other removable storage media to copy maps to the terminal, and it is very inconvenient to perform frequent upgrades.

For mobile phone navigators, the update of the mobile phone's own map cannot achieve good results. Due to the limitation of bandwidth data, the map with small data volume can be updated online, but the map with large data volume of M level cannot be updated online. The quality of the map updated online is not fine. If a fine map is needed, the user needs to manually copy it offline to update it. The online update mode of this mobile phone navigator has the disadvantages of being untimely and inconvenient.

Contents of the invention

The purpose of the present invention is to solve the defects in the prior art, to provide a system for updating maps online, which is composed of a terminal equipped with a map upgrade module and a map server equipped with a map version control module, so as to realize the online update of maps and avoid manual Realize map update and download map data quickly, conveniently and effectively.

Another object of the present invention is to solve the defects in the prior art, to provide a method for the map server to update the map online to the terminal map, and to download the map data in blocks to update the map, thereby avoiding manual update of the map, and being able to Fast, convenient and effective downloading of map data.

To achieve the above object, the present invention provides a system for updating maps online, including: a terminal, which is provided with a GIS engine module for map navigation; a first map database for storing various map data; a map update module , for initiating a map upgrade connection request; the first communication module, with the first map database and the map upgrade module, for forwarding the map upgrade connection request and storing map data to the first map database; the map server, which is set There is a second communication module, connected to the first communication module through a network, for receiving a map upgrade connection request and sending map data; a map version control module, connected with the second communication module, for updating the connection according to the map Requesting the map data that needs to be provided for calculation; the second map database is connected with the map version control module and the second communication module, and is used to pass the second communication module according to the result calculated by the map version control module Send map data to the terminal.

The present invention also provides a method for updating maps online, comprising the following steps:

Step 1: The first communication module of the terminal sends the map upgrade connection request sent by the map upgrade module to the map server through the network;

Step 2: The second communication module of the map server sends the map upgrade connection request to the map version control module in the form of a bus;

Step 3: The map version control module calculates the second map data to be provided according to the map upgrade connection request;

Step 4: the second communication module sends the second map data to the terminal through the network;

Step 5: The first communication module receives the second map data, and stores the second map data in the first map database.

It can be seen from the above technical solutions that the present invention realizes downloading map data in blocks to update the map, avoids manual map update, and can download map data quickly, conveniently and effectively.

The present invention will be described in further detail below through specific embodiments and in conjunction with the accompanying drawings.

Description of drawings

Fig. 1 is the structural representation of the system of online update map of the present invention;

Fig. 2 is a terminal configuration structure diagram in the system of online update map of the present invention;

Fig. 3 is the map server configuration structural diagram in the system of online update map of the present invention;

Fig. 4 is a flow chart of the method for updating a map online in the present invention.

Detailed ways

As shown in Figure 1, it is a schematic structural diagram of a system for updating maps online in the present invention, the system includes: a terminal 1 such as a vehicle-mounted navigator or a mobile phone navigator, and the vehicle-mounted navigator is provided with a GIS engine module 13 for map navigation The first map database 14 is used to store various map data; the map upgrade module 15 is used to initiate a map upgrade connection request; the first communication module 16 is used to forward the map with the first map database 14 and the map upgrade module 15 Upgrade connection request and store map data to first map database 14; Map server 2, this map server is provided with second communication module 23, is connected with first communication module 16 by network such as wireless network or wired network, is used to receive map upgrade Connection request and send map data; Map version control module 24, be connected with the second communication module 23, be used to calculate the map data that needs to provide according to map upgrade connection request; The second map database 25, with map version control module 24 and the first The two communication modules 25 are connected, and are used to send the map data to the terminal through the second communication module according to the calculation result of the map version control module.

The specific hardware configuration of the above-mentioned terminal, such as a car navigator or a mobile phone navigator, is shown in FIG. 2 . The terminal 1 includes a first communication unit 101, a user interface unit 102, a first control unit 103, and an external memory 104 interconnected by a bus.

Wherein, the first communication unit 101 is composed of a signal transceiver, a communication control circuit, etc., and performs wired or wireless communication with a map server on the network side through the communication unit to perform operations of updating maps.

The user interface unit 102 provides an interface for the user to interact with the user such as a display screen, a keyboard, a radio, and a loudspeaker, and displays various information such as maps through the display screen; sends various commands of the user related to map operations through the keyboard; Radio and speaker, the user sends various commands related to map operations by voice.

The first control unit 103 is the core control area of the terminal 1. In the control unit, there are a central processing unit (CPU) 1031, a volatile storage unit 1032 such as random access memory, RAM and a non-volatile storage unit 1033, Such as ROM. The non-volatile storage unit 1033 stores operating system programs, map databases, control programs with GIS engine module functions and map upgrade module functions, and other UI and other application software programs. The CPU 1031 reads various control programs from the non-volatile storage unit 1033 and executes various operations. During the operation of the various control programs by the CPU 1031, the volatile storage unit 1032 serves as a work area for various programs;

The external storage unit 104 can read the data stored in the computer-readable storage medium (for example, CD-ROM, CD-ROM, floppy disk, FD), and can output the read data to the CPU.

The hardware configuration of the map server is shown in FIG. 3 . The map server 2 includes a second communication unit 201 , a second control unit 202 , a map data storage 203 and an external storage 204 interconnected by a bus.

The second communication unit 201 is composed of a signal transceiver, a communication control circuit, etc., and requests the terminal to update the map through the communication unit and a wired network or a wireless network.

The second control unit 202 is the core control part of the map server. In the control unit 202, there are central processing unit (CPU) 2021, volatile storage unit 2022 such as random access memory, RAM and non-volatile storage unit 2023 , such as ROM. The non-volatile storage unit 2023 stores operating system programs, control programs with map version control module functions, and other control programs. The CPU 2021 reads various control programs from the non-volatile storage unit 2023 and executes various operations. During the operation of the various control programs by the CPU 2021 , the volatile storage unit 2022 serves as a work area for various programs.

The map data storage 203 is the second map database 25 in the software. This map data storage is a non-volatile storage unit, which stores various massive map data. These map data are divided into multiple levels to divide the same level of maps. and encoding to form map tiles.

The external storage unit 104 can read the data stored in the computer-readable storage medium (for example, CD-ROM, CD-ROM, floppy disk, FD), and can output the read data to the CPU.

In the online map update system shown in Figure 1, both the car navigator terminal and the map server have a bus structure and CPU. After the car navigator is loaded in the user's car, it is no longer necessary for the user to use a CD or go to a 4S store to update the map data. The map update module of the car navigator sends the map data upgrade request to the map server on the Internet side by the first communication module 16, and the map data on the car navigator and the map data on the server side are carried out by the map version control module 24 of the map server. Compare and update the old map data on the car navigator.

As shown in Figure 4, based on the system shown in Figure 1, a flow chart of a method for updating maps online, the method includes the following steps:

Step 1: The user clicks on the "Map Update" menu item or button through the user interface of the car navigator to update the map, and the first communication module requests the map update connection request sent by the map update module to update the local map data at this time. The wired network or wireless network sends to the map server; this update method is initiated by the user to update the local map data; of course, when the user opens the map for browsing, the car navigator client program actively requests to update, the user can The current map data is being browsed without affecting the update of the map data, that is, a map data update independent of the browsing process; the client program actively requests the update, that is, the map upgrade module will automatically send the map through the first communication module The upgrade connection request requires upgrading the local map data at this time, and sends it to the map server through a wired network or a wireless network; in addition to the above two methods, the user can also update the map while browsing, that is, the user browses the map near the unit, When the user needs to drag and drop the map to browse, the first communication module sends the map upgrade connection request sent by the map upgrade module to the map server through the network to update the map near the unit; the map server updates the map data near the unit that the user is browsing in real time;

Step 2: The second communication module of the map server sends the received map upgrade connection request to the map version control module in the form of a bus;

Step 3: The map version control module calculates the second map data to be provided according to the map upgrade connection request; wherein, the calculation of the second map data by the map server is specifically: comparing the first terminal map data with the map data in the server, such as comparing the two version number, or compare the first map data, that is, the map around the unit being browsed that needs to be updated, with the grid data size and byte value in the server map data. If the size and byte value are the same, it indicates that the user The map around the unit being browsed is the latest version. If it is not the same, then according to the comparison result, such as the two versions are different or the grid is different, the map data that has been divided and formed by the map server, that is, the block map, is selected. Corresponding to the maps around the unit that the user at the terminal side is browsing or some local maps of the first map database in the car navigator, obtain the second map data that needs to be downloaded to the car navigator to update the first map data;

The map data classified on the map server is specifically divided into units of cities and prefecture-level cities. This type of design can reduce the geographical map installed by the user and reduce the cost of the user. Secondly, the map classification can also be divided into multiple levels according to the level of detail (levelOfDetail), such as 20 levels, increasing step by step from 1-20 level of detail, the first level includes oceans, countries, capitals, oceans, and continents, and the second level The level includes the content of the first level but the lines and surfaces contain more nodes, so that the map can be displayed more accurately when zoomed in. In each subsequent level, the content of the previous level is included but more and more nodes are included, and the nodes can be refined to information such as cities, regions, streets, etc.

Thirdly, map segmentation is to divide and encode the map of the same level, and at the same time create a segmented index file, through which the map data can be quickly indexed, downloaded, scheduled, and displayed. A block, or grid, is the smallest unit of map download. Hierarchical design allows users to download low-level map levels first, which have a wide field of view and small data volume, so as to avoid users waiting for a long time for map downloads, and use the method of background download to download high-level map levels. The block design enables the terminal to download the map block that the user is browsing first, so as to prevent the user from waiting for a long time for the map download, and then use the background download method to download the block that the user has not yet browsed.

Step 4: The second communication module sends the second map data, that is, the map data around the unit to be updated or the local map to be updated, to the terminal through a wired network or a wireless network;

Step 5: The first communication module receives the second map data, that is, the map data around the unit that needs to be updated or the local map that needs to be updated and stored in the first map database, specifically: the map data around the unit that needs to be updated or the local map that needs to be updated The local map of the unit is stored in other storage areas of the map database; the first storage area that stores the original unit map data releases the data, so that the updated map data around the unit or the local map that needs to be updated is moved to the first storage area, thus completing the map online updates.

The map updating method described above is also applicable to mobile phone navigators, and the specific updating process is the same as that of the above-mentioned vehicle-mounted navigators, so details will not be repeated here. The online map update method and system of the present invention provide three update map environments. One is that the user can actively initiate a map update request by clicking the "map update" button or option provided on the client interface. At this time, the local map stored in the first map database in the car navigator or mobile phone navigator can be updated. The second is that when the car navigator or mobile phone navigator client starts, the map update module automatically establishes a connection with the map server to update the local map stored in the first map database in the car navigator or mobile phone navigator. The third is that the user is browsing a map when using a car navigator or a mobile phone navigator. At this time, the map can be updated in real time. The map server updates the map that the user browses in real time. The server will update which map block.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention without limitation. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be The scheme shall be modified or equivalently replaced without departing from the spirit and scope of the technical scheme of the present invention.

Claims (10)

1. the system of an online updating map comprises:

Terminal, it is provided with the GIS engine modules, is used to carry out digital map navigation;

First map data base is used to store various map datums; Map upgrading module is used to initiate map upgrading connection request;

First communication module with described first map data base and map upgrading module, is used to transmit map upgrading connection request and store map data to described first map data base;

Map server, it is provided with second communication module, is connected by network with described first communication module, is used to receive map upgrading connection request and sends out map datum;

Map Version Control module is connected with described second communication module, is used for the map datum that connection request calculates need be provided of upgrading according to the map;

Second map data base is connected with described second communication module with described map Version Control module, is used for according to described map Version Control module result calculated, sends the map datum of process classification to described terminal by described second communication module.

2. system according to claim 1 is characterized in that described network is cable network or wireless network.

3. the method for an online updating map is characterized in that may further comprise the steps:

Step 1: the first communication module of terminal sends to map server with the map map upgrading connection request that module sends of upgrading by network;

Step 2: the second communication module of map server sends to map Version Control module with this map upgrading connection request with bus mode;

Step 3: map Version Control module second map datum that connection request calculates need be provided of upgrading according to the map;

Step 4: second communication module sends to terminal by network with this second map datum;

Step 5: first communication module receives this second map datum, and this second map datum is stored to first map data base.

4. method according to claim 3, it is characterized in that calculating in the described step 3 map datum that need provide is specially: compare the first terminal map data and server map datum, according to comparative result, the map datum that server is classified is selected, and obtains second map datum.

5. method according to claim 3, it is characterized in that being stored in the described step 5 first map data base and be specially: second map datum is stored in other memory blocks of map data base; First memory block of depositing the first terminal map data discharges data, and second map datum is moved to first memory block.

6. method according to claim 4 is characterized in that described comparison first terminal map data and server map datum are specially the version number of comparison.

7. method according to claim 4 is characterized in that described comparison first terminal map data and server map datum are specially the grid data size and the byte value of comparison map datum.

8. method according to claim 4 is characterized in that described map datum is that unit divides according to city and prefecture-level city.

9. method according to claim 4 is characterized in that the map datum of described classification carries out classification according to two-stage.

10. method according to claim 9, it is characterized in that described two-stage classification is specially: first order map datum comprises ocean, country, capital, ocean and continent; Second level map datum comprises the map data content and the multiple node of the first order.

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