CN101354261A - System and method for updating data of navigation system and navigation system - Google Patents
System and method for updating data of navigation system and navigation system Download PDFInfo
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- CN101354261A CN101354261A CNA200710119657XA CN200710119657A CN101354261A CN 101354261 A CN101354261 A CN 101354261A CN A200710119657X A CNA200710119657X A CN A200710119657XA CN 200710119657 A CN200710119657 A CN 200710119657A CN 101354261 A CN101354261 A CN 101354261A
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Abstract
The invention discloses a data updating method of a navigation system, which comprises a navigation terminal and a navigation server; the method comprises the steps: a map data block conforming with a preset rule is determined according to the present position of a user; the map data block has sole corresponding position identification information and version information; if the map data block exists in the navigation terminal, the version information of the map data block in the navigation terminal is compared with the version information of a map data block having the same position identification information in the navigation server; if the comparison result is inconsistent, the map data block corresponding to the position identification information is downloaded from the navigation server and the map data block in the navigation terminal is updated. The data updating method of the invention improves the download efficiency of the map data by decreasing the data flow and causes the update of the map data to be provided in time from the navigation server to navigation terminal users. Besides, the update course of the embodiment of the invention requires no participation of the users and offers better application experience to the users.
Description
Technical field
The present invention relates to the Geographic Navigation field, particularly the data update apparatus of a kind of data-updating method of navigational system, a kind of navigational system and a kind of navigational system.
Background technology
Along with the development of city traffic network and the raising of living standards of the people, the Geographic Navigation system that realizes based on running fix and wireless interconnected network technology has become an indispensable part in people's life.
In the Geographic Navigation system, the map datum with real-time, accuracy is the basis of guaranteeing to realize the every function of navigational system.Along with the continuous development of modern civilization, the paces of urban construction are more and more faster, guarantee that effectively the real-time of map datum and accuracy are that those skilled in the art expect a problem solving for a long time.
At this problem, a solution of prior art is, the service supplier regularly (for example is recorded in certain storage medium with updated map data, CD) on, after the user pays corresponding cost purchase, this updating map data directly is installed on navigation terminal, existing map datum is all replaced.Yet in practice, normally fix service supplier's update time, such as half a year or 1 year, obviously do not catch up with the paces that map datum changes, thereby still be short of real-time; And its data quantity stored is subjected to the restriction of storage medium, and for bigger map datum, it is higher to upgrade cost.
The another kind of solution of prior art is, the map datum after the service supplier will upgrade in time is uploaded to navigation server, and the user downloads corresponding updating map data by sending update request by navigation terminal.Yet the whole process need user of this scheme participates in the overall process, and promptly all needs the user effort time and efforts just can finish from issuing a request to data download; And, owing to the communication between navigation server and the navigation terminal is carried out with Wireless transmission mode, the communication limited bandwidth, thereby speed of download can be slow; And because each more new capital is to upgrade whole map datums, so each data updated amount also is very large, update time is long, and update efficiency is low; In addition, in this scheme, even the service supplier can guarantee the real-time and the accuracy of the map datum on the navigation server, need certain hour but the user learns the message that the service supplier upgrades, more likely be, even the user knows existing updating map data, but think that renewal process is too loaded down with trivial details and be reluctant frequent updating, thereby for user's use, adopt this scheme, still can not get guaranteeing for the real-time of map datum and accuracy.
So, but those skilled in the art press for develop that a kind of update efficiency is higher, user's experience data-updating method and the update system of navigational system preferably.
Summary of the invention
Technical matters to be solved by this invention provides a kind of data-updating method of navigational system, and update efficiency in the prior art is low in order to solve, the problem of poor user experience.
The present invention also provides a kind of data update apparatus and a kind of navigational system of navigational system, in order to guarantee said method realization and application in practice.
For solving the problems of the technologies described above, the embodiment of the invention discloses a kind of data-updating method of navigational system, described navigational system comprises navigation terminal and navigation server, described method comprises:
Determine to meet the block map data of presetting rule according to user's current location, described block map data has the station location marker information and the version information of unique correspondence;
If there has been described block map data in the described navigation terminal, then the version information that has the block map data of same position identification information in the version information of described block map data and the navigation server is compared, if it is inconsistent, then from navigation server, download described station location marker information corresponding map data block, upgrade block map data described in the navigation terminal.
Preferably, described method also comprises:
Map datum is carried out piecemeal to be handled;
Displaying ratio and coordinate position log location identification information according to the block map data behind the described piecemeal; And, according to the temporal information recording version information of the block map data behind the described piecemeal.
Preferably, described method also comprises:
Coupling needs the updated map data piece in navigation server;
Upgrade described block map data, the version information of the described block map data of new record of laying equal stress on.
Preferably, determine block map data by following steps:
Obtain default navigation circuit;
Current location according to the user is selected the feature locations point at described navigation circuit;
Determine that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
Preferably, determine block map data by following steps:
Obtain user's road information and directional information;
Current location according to the user generates the prediction circuit with described road information and directional information;
Selected feature locations point in described prediction circuit;
Determine that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
The embodiment of the invention also discloses a kind of data update apparatus of navigational system, described navigational system comprises navigation terminal and navigation server, and described data update apparatus comprises:
Determination module: be used for determining to meet according to user's current location the block map data of presetting rule, described block map data has the station location marker information and the version information of unique correspondence;
Update module: be used for when there has been described block map data in described navigation terminal, the version information that has the block map data of same position identification information in the version information of described block map data and the navigation server is compared, if it is inconsistent, then from navigation server, download described station location marker information corresponding map data block, upgrade block map data described in the navigation terminal.
Preferably, described data update apparatus also comprises:
Piecemeal processing module: be used for that map datum is carried out piecemeal and handle;
Information logging modle: be used for displaying ratio and coordinate position log location identification information according to the block map data behind the described piecemeal; And, according to the temporal information recording version information of the block map data behind the described piecemeal.
Preferably, described data update apparatus also comprises:
Server matching module: be used for needing the updated map data piece in the navigation server coupling;
Server update module: be used for upgrading the block map data of navigation server, the version information of the described block map data of new record of laying equal stress on.
Preferably, described determination module comprises:
Acquiring unit: be used to obtain default navigation circuit;
Choose the unit: be used for selecting the feature locations point at described navigation circuit according to user's current location;
Corresponding unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
Preferably, described determination module comprises:
Obtain the unit: the road information and the directional information that are used to obtain the user;
Generation unit: be used for generating prediction circuit with described road information and directional information according to user's current location;
Selected unit: be used at the selected feature locations point of described prediction circuit;
Processing unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
The embodiment of the invention also discloses a kind of navigational system, comprise navigation terminal and navigation server, described navigation terminal comprises:
Memory module: the block map data that is used to store download;
Determination module: be used for determining to meet according to user's current location the block map data of presetting rule, described block map data has the station location marker information and the version information of unique correspondence;
Request module: comprise contrast request unit and download request unit; Described contrast request unit is used for when there has been the described block map data that meets presetting rule in described memory module, sends the request that the version information that has the block map data of same position identification information in the map data base with the version information of described block map data and navigation server compares; Described download request unit is used for the inconsistent comparing result of version information that returns according to navigation server, and the navigation server sends the request of downloading this block map data;
Update module: be used for block map data updated stored module corresponding map data block with described download;
Described navigation server comprises:
Interface module: be used to receive the request that the request module of navigation terminal is sent, and the navigation terminal is returned result and met the block map data of presetting rule;
Processing module: comprise contrast processing unit and download processing unit, described contrast processing unit is used for according to described contrast request version information being compared, and returns version information unanimity or the inconsistent result of version information; Described download processing unit is used for searching the block map data of coupling and being sent to interface module at map data base according to described download request;
Map data base is used to store described block map data.
Preferably, the memory module of described navigation terminal is local cache or other memory device.
Compared with prior art, the embodiment of the invention has the following advantages:
The embodiment of the invention can be under the band-limited condition of communication, by reducing the download efficiency that data traffic improves map datum, and, the embodiment of the invention makes the renewal of map datum to offer the navigation terminal user from navigation server in time based on the framework of navigation server and navigation terminal; And the renewal process of the embodiment of the invention does not need the user to participate in, and can make the user obtain better experience.
Description of drawings
Fig. 1 is the process flow diagram of the data-updating method embodiment of a kind of navigational system of the present invention;
Fig. 2 is applied navigation terminal of the present invention and navigation server structure system structural representation;
Fig. 3 is the synoptic diagram to the map datum layering;
Fig. 4 is the synoptic diagram of block map data and station location marker information and version information;
Fig. 5 is a kind of navigation terminal of the present invention carries out map data update in navigation a process flow diagram;
Fig. 6 is the structured flowchart of the data update apparatus embodiment 1 of a kind of navigational system of the present invention;
Fig. 7 is the structured flowchart of the data update apparatus embodiment 2 of a kind of navigational system of the present invention;
Fig. 8 is the structured flowchart of a kind of navigational system embodiment of the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, the present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
One of core idea of the embodiment of the invention is, when navigation application starts, determines needed block map data; Whether the enquiry navigation terminal had downloaded corresponding block map data then, if do not have, then directly the navigation server requests is obtained corresponding block map data; If have, then whether the version information of data block inquiry block map data is up-to-date according to the map, if not, then upgrade this block map data.Thereby make the present embodiment can be under the band-limited condition of communication, the corresponding block map data of real-time update have automatically effectively guaranteed the real-time and the accuracy of map datum.
With reference to figure 1, show the process flow diagram of the data-updating method embodiment of a kind of navigational system of the present invention, described navigational system comprises navigation terminal and navigation server, described method specifically may further comprise the steps:
If had described block map data in the described navigation terminal of step 102, then the version information that has the block map data of same position identification information in the version information of described block map data and the navigation server is compared, if it is inconsistent, then from navigation server, download described station location marker information corresponding map data block, upgrade block map data described in the navigation terminal.
In embodiments of the present invention, various navigation Service are provided by navigational system, and navigational system can be shown to the user with the form of electronic chart with real world, and functions such as inquiry, location, monitoring are provided.Described navigational system comprises navigation server and navigation terminal, wherein, navigation server is used to provide the navigation calculating service of navigation data and core, navigation terminal is used for downloading also from navigation server, and the buffer memory navigation data offers user's use, and finishes map datum demonstration and navigation information interactive function.Described navigation data can be divided into two kinds: a kind of is map datum, promptly is combined into the picture of electronic chart, also provides the picture that shows to the user; Another kind is a road net data, is used for the navigational system internal calculation and uses.Described road net data is corresponding with map datum, is used to identify the position of map datum.The navigation data that navigation terminal is downloaded comprises map datum and road net data, and wherein map datum is used for being shown to the user at terminal interface and browses, and road net data is used in whole data handling procedure sign corresponding map data.
With reference to figure 2, show applied navigation terminal of the present invention and navigation server structure system structural representation.Navigation terminal and navigation server adopt wireless telecommunications, in navigation, navigation terminal sends request of data according to user's demand, request of data is handled after arriving navigation server accordingly, return data result then, navigation terminal are carried out corresponding navigation according to the data processed result that obtains and are handled.
Because in a period of time, the variation of map datum often is only limited to certain scope, therefore all map datums are upgraded and there is no need, thereby one of another core idea of the present invention is, navigation server provides the block map data of handling through piecemeal, and to unique station location marker information and the version information of each block map data record, when map datum changes, navigation server only need upgrade the block map data of relevant position, and upgrades corresponding version information; Navigation terminal as required by contrasting the version information of corresponding block map data in navigation terminal and the navigation server, just can be finished the renewal of block map data in time when navigation.
If the map datum of navigational system exists with whole document form, before using the embodiment of the invention, need that also map datum is carried out piecemeal and handle so.In this case, can also may further comprise the steps in the present embodiment:
Map datum is carried out piecemeal to be handled;
Displaying ratio and coordinate position log location identification information according to the block map data behind the described piecemeal; And, according to the temporal information recording version information of the block map data behind the described piecemeal.
Preferably, the size of the block map data behind the described piecemeal is fixed, and is seamless between piece and the piece, and the geographic range of every block map data representative is relevant with its residing displaying ratio.The station location marker information of described block map data can comprise x, y and level, and wherein, x and y are the pairing coordinate positions of block map data, and level is the displaying ratio of block map data.What can expect is, in practice, for realizing high efficiency data manipulation, can be in the following way for the storage of block map data:
Map datum is stored with pyramid structure, as shown in Figure 3, promptly according to different map scale layerings, bottom one deck is one deck of displaying ratio minimum, promptly the meticulousst one deck, the 0th layer among Fig. 3 for example, in contrast, topmost one deck is one deck of displaying ratio maximum, as the 2nd layer among Fig. 3.What every layer of structure represented is the map datum of identical geographic range, and just the displaying ratio chi varies in size.Wherein, every layer of structure is divided into each height piece again, the corresponding pictures of each sub-piece, the lip-deep geographic range of the corresponding earth of every pictures.Certainly, those skilled in the art as required or experience to adopt any map datum block division method all be feasible, the present invention does not need this to limit.
Corresponding with each sub-piece of every layer in the map datum, road net data (x, y, level) write down a pictures, the residing level of level representative picture, be displaying ratio, the x representative picture on whole the figure of this layer from left to right which of number open, the y representative picture on whole the figure of this layer from the top down which of number open.If as a unit, just can set up a three-dimensional system of coordinate with every pictures, the x value representation of picture be the value of coordinate transverse axis, the y value representation of picture be the value of the coordinate longitudinal axis, the level value representation of picture be the value of coordinate Z axle.
Above-mentioned data can be kept in the navigation server with document form, in this case, it is described that (x, y level) are the station location marker information of block map data, the foundation of file and (x, y, level) corresponding, promptly at first set up the level file according to level, under each level file, set up file according to x more then, set up the y file again under each x file.Like this, according to every pictures (x, y level), just can be implemented in the function of searching corresponding picture on the navigation server quickly and easily.
More preferably, finish operations such as data query, calculating or processing for ease of the navigation server end, can also give an ID for every pictures, promptly the ID of the sub-piece of each of every layer is all different, in this case, described ID is the station location marker information of block map data.In the present embodiment, described ID can utilize the position of the sub-piece of map and place level directly to calculate, so just saved the time that is used for data processing in a large number, the present invention does not limit the expression mode of ID at this, be that ID can have other expression modes, satisfy with the picture one-to-one relationship getting final product.
For guaranteeing the real-time of map datum, be convenient to the contrast of corresponding block map data in navigation server and the navigation terminal, described version information is preferably based on temporal information and sets, on this basis, those skilled in the art can also be provided with other factors, for example, and update content, or other map attribute etc., the present invention does not limit this.
For making those skilled in the art obtain to understand comparatively intuitively, with reference to figure 4, show a kind of data form of expression that is stored in the geodata piece in the navigation server, wherein, each rectangular grid is represented a block map data, first line data in the rectangular grid is represented the station location marker information of this geodata piece, second line data is represented the version information of this geodata piece, as can be seen from the figure, the version information of the block map data of band shade is not newly in the version information of the block map data of shade, so, in this case, in case the user need use these geodata pieces with redaction information, and the version information of the local block map data of having downloaded is not inconsistent with it, then need upgrade local corresponding block map data with these geodata pieces with redaction information.
Certainly, those skilled in the art as required or experience adopt the method for any log location identification information and version information, or any type of station location marker information is set and version information all is feasible, the present invention does not need to limit to this.
When the map datum that collects when the variation according to real world changes, for guaranteeing the accuracy and the real-time of map datum, need the renewal of initiation to map datum in the navigation server, because in a period of time, the variation of map datum often is only limited to certain scope, therefore all map datums are upgraded and there is no need, according to one of core idea of the present invention, for improving data processing efficiency, as long as position according to the map datum that changes, determine that the block map data with relevant position identification information is needs updated map data piece, then this block map data is upgraded and get final product, certainly, for the block map data after upgrading, should reset the version information of renewal.In this case, present embodiment can also may further comprise the steps:
Coupling needs the updated map data piece in navigation server;
Upgrade described block map data, the version information of the described block map data of new record of laying equal stress on.
In navigation procedure,, can pass through to shift to an earlier date corresponding geographical data block realization in the download navigation circuit, thereby in the present embodiment, the step 101 of described definite block map data can comprise following substep in order to improve the efficient of data down loading updating:
Substep A1, obtain default navigation circuit;
It is an important subsidiary function of navigational system that navigation circuit is provided, and it comprises automatic circuit planning and artificial line design.Automatic circuit planning is to determine starting point and destination by the user, by navigation server designing optimal travel route automatically on request, comprises the calculating of the fastest route, the simplest route, the route by the express highway section least number of times etc.The artificial line design is by destination design starting point, terminal point and the transit point etc. of user according to oneself, sets up line library automatically.After layout of roads finishes, can send to navigation terminal and show according to user's demand.
Substep A2, according to user's current location at the selected feature locations point of described navigation circuit;
Described feature locations point can also be taken all factors into consideration the interval time of presetting according to the size setting of geographical data block on geographical space, and user's travel speed etc. is provided with, and the present invention does not limit this.
Substep A3, determine that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
By mating the station location marker information of above-mentioned position and described geodata piece, can obtain the corresponding geographical data block fast, wherein, displaying ratio can adopt the current demonstration rank of display terminal, also can be provided with voluntarily by the user.
Use present embodiment geodata piece deterministic process in practice can for, at first extract the geodata piece at user's current location point place, then along navigation way, size or other factors according to geographical data block are determined next feature locations point successively, extract these feature locations then and put pairing geodata piece, so determine n geodata piece that meets presetting rule; Perhaps, at first determine all feature locations points, extract all corresponding geodata pieces according to these feature locations points then according to the current location point of user; It determines that specifically method the present invention need not to limit.
Because in practice, the application navigation circuit may be gone off course, promptly refer in the communication navigation process, situation when the guidance path of actual course of user and navigation system computes departs from, for addressing this problem, in the present embodiment, preferably, can also determine block map data by following substep:
Substep B1, acquisition user's road information and directional information;
Be well known that GPS can be used for obtaining user position information and directional information, i.e. longitude generally speaking, latitude and user's travel direction, or in some longitude, latitude, sea level elevation and user's travel direction in particular cases.GPS can be as required in real time or regularly obtain user's current location information and the directional information line item of going forward side by side.
In this case, meet a plurality of positional informations that preset requirement, can obtain user's road information by extraction.For example, extraction GPS record, apart from the positional information of 5 to 10 the shortest location points of current time interval, in road net data, mating, described road information may comprise a road information, also may be made up of many road informations.Those skilled in the art also can adopt other method of the prior art to obtain user's road information, and the present invention does not limit this.
Substep B2, generate prediction circuit according to user's current location with described road information and directional information;
Current location from the user, along directional information and road information, can obtain prediction circuit at this user, in embodiments of the present invention, described prediction circuit can be generated arbitrarily as required by those skilled in the art, for example, with the current location starting point of prediction circuit, serve as the terminal point of prediction circuit with the terminal point of current location place road; Perhaps, with the current location starting point of prediction circuit, serve as the terminal point of prediction circuit with the terminal point of navigation circuit; Perhaps, with the current location is the starting point of prediction circuit, the terminal point of prediction circuit is not set, and according to user's road information and directional information, the location meets the geodata piece of presetting rule in down-stream of the present invention, for reducing system burden, improve system handles efficient, the last this mode of embodiment of the invention advantageous applications realizes.
Certainly, it all is feasible that those skilled in the art adopt any method to generate described prediction circuit, and the present invention does not need this to limit.
Substep B3, in described prediction circuit selected feature locations point;
Preferably, be the initiation feature location point with user's current location information, the size of data block selected further feature location point in described prediction circuit according to the map.Described feature locations point can also be taken all factors into consideration the interval time of presetting according to the size setting of geographical data block on geographical space, and user's travel speed etc. is provided with, and the present invention does not limit this.
Substep B4, determine that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
Below determine in practice that to use present embodiment a kind of method of block map data is that example is elaborated.
If the current coordinate of user position is (p, q), mesh coordinate (the x of itself and block map data, y) corresponding relation is (x, y)=(p q), obtains the current display level level of the display terminal of navigational system to f, obtain under current display level the geographic range of a block map data representative.
If the size of block map data is d, current location information with the user is the initiation feature location point, at first extract the pairing data block of this initiation feature location point, then along the prediction circuit, the big or small d of data block moves to next feature locations point successively according to the map, extract this feature locations then and put pairing block map data, so extract n block map data.
Data ground is a large amount of to be downloaded in order to avoid, and causes data redundancy, and preferably, the number of described geodata piece can be calculated by following formula and determine:
n＝[t×s÷d]；
Wherein, t is the interval time of presetting, and s is user's a travel speed, and d is the size of geodata piece, need to prove, described d is meant the size of geodata piece on geographical space, rather than the file size of geodata piece.Obviously, fully take into account these objective factors in the present embodiment, can make the data downloaded amount enough guarantee the fluency of navigation procedure, download, thereby effectively guaranteed the navigation reaction velocity of navigational system and be unlikely to redundant.And, be to guarantee that the integrality of block map data, described n are preferably more than or equal 1 integer.
Present embodiment is downloaded the geodata piece of this circuit correspondence in advance, thereby is made navigation procedure have more real-time by the vehicle line of predictive user, has improved the reaction velocity of communication navigation,
Be understandable that, the method of above-mentioned definite geographical data block only is used for for example, those skilled in the art can also adopt other method to determine to meet the geodata piece of presetting rule, for example, determine that block map datas all between starting point to terminal in the navigation circuit is the geodata piece, perhaps, obtaining the block map data between to terminal of starting point in the navigation circuit according to fixed intervals is geodata piece etc., this method can be when generating navigation circuit, in advance corresponding block map data is upgraded, according to one of core idea of the present invention, this method also can realize, thereby the geodata piece that those skilled in the art adopt any method to determine to meet presetting rule all is feasible, and the present invention does not need this to limit.
For making those skilled in the art understand the present invention better,, the map data updating method of using the embodiment of the invention is described below in conjunction with Fig. 5.
With reference to figure 5, show a kind of navigation terminal carries out map data update in navigation process flow diagram, specifically may further comprise the steps:
The version information of step 503, the described block map data of extraction;
Described block map data is stored in the storage unit of navigation terminal or upgrades corresponding map data block in the navigation terminal.The storage unit of described navigation terminal can be local cache, also can be other storage unit or memory storage, and the present invention does not limit this.
The embodiment of the invention can be under the band-limited condition of communication, by reducing the download efficiency that data traffic improves map datum, and, the embodiment of the invention makes the renewal of map datum to offer the navigation terminal user from navigation server in time based on the framework of navigation server and navigation terminal; And the renewal process of the embodiment of the invention does not need the user to participate in, and can make the user obtain better experience.
For aforesaid each method embodiment, for simple description, so it all is expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not subjected to the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in the instructions all belongs to preferred embodiment, and related action and module might not be that the present invention is necessary.
With reference to figure 6, show the structured flowchart of the data update apparatus embodiment 1 of a kind of navigational system of the present invention, wherein, described navigational system comprises navigation terminal 601 and navigation server 602, described data update apparatus comprises with lower module:
Determination module 603: be used for determining to meet according to user's current location the block map data of presetting rule, described block map data has the station location marker information and the version information of unique correspondence;
Update module 604: be used for when there has been described block map data in described navigation terminal 601, the version information that has the block map data of same position identification information in the version information of described block map data and the navigation server 602 is compared, if it is inconsistent, then from navigation server 602, download described station location marker information corresponding map data block, upgrade block map data described in the navigation terminal 601.
Preferably, described determination module 603 can comprise with lower unit:
Acquiring unit: be used to obtain default navigation circuit;
Choose the unit: be used for selecting the feature locations point at described navigation circuit according to user's current location; And,
Corresponding unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
As another embodiment, described determination module 603 can comprise with lower unit:
Obtain the unit: the road information and the directional information that are used to obtain the user;
Generation unit: be used for generating prediction circuit with described road information and directional information according to user's current location;
Selected unit: be used at the selected feature locations point of described prediction circuit; And,
Processing unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
If the map datum of navigational system exists with whole document form, before using the embodiment of the invention, need that also map datum is carried out piecemeal and handle so.With reference to figure 7, show the structured flowchart of the data update apparatus embodiment 2 of a kind of navigational system of the present invention, wherein, described navigational system comprises navigation terminal 701 and navigation server 702, described data update apparatus comprises with lower module:
Piecemeal processing module 703: be used for that map datum is carried out piecemeal and handle;
Information logging modle 704: be used for displaying ratio and coordinate position log location identification information according to the block map data behind the described piecemeal; And, according to the temporal information recording version information of the block map data behind the described piecemeal;
Determination module 705: be used for determining to meet according to user's current location the block map data of presetting rule, described block map data has the station location marker information and the version information of unique correspondence;
Update module 706: be used for when there has been described block map data in described navigation terminal 701, the version information that has the block map data of same position identification information in the version information of described block map data and the navigation server 702 is compared, if it is inconsistent, then from navigation server 702, download described station location marker information corresponding map data block, upgrade block map data described in the navigation terminal 701.
Preferably, described determination module 705 can comprise with lower unit:
Acquiring unit: be used to obtain default navigation circuit;
Choose the unit: be used for selecting the feature locations point at described navigation circuit according to user's current location; And,
Corresponding unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
As another embodiment, described determination module 705 can comprise with lower unit:
Obtain the unit: the road information and the directional information that are used to obtain the user;
Generation unit: be used for generating prediction circuit with described road information and directional information according to user's current location;
Selected unit: be used at the selected feature locations point of described prediction circuit; And,
Processing unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
When the map datum that collects when the variation according to real world changes, for guaranteeing the accuracy and the real-time of map datum, need the renewal of initiation to map datum in the navigation server, because in a period of time, the variation of map datum often is only limited to certain scope, therefore all map datums are upgraded and there is no need, according to one of core idea of the present invention, for improving data processing efficiency, as long as position according to the map datum that changes, determine that the block map data with relevant position identification information is needs updated map data piece, then this block map data is upgraded and get final product, certainly, for the block map data after upgrading, should reset the version information of renewal.In this case, present embodiment can also comprise with lower module:
Server matching module: be used for needing the updated map data piece in the navigation server coupling;
Server update module: be used for upgrading the block map data of navigation server, the version information of the described block map data of new record of laying equal stress on.
For device embodiment, because it is substantially corresponding to method embodiment, so description is fairly simple, relevant part gets final product referring to the part explanation of method embodiment.Each device embodiment in this instructions all adopts the mode of going forward one by one to describe, and identical similar part is mutually referring to getting final product between each device embodiment, and what each device embodiment stressed all is the difference of installing embodiment with other.
It is to be noted, those skilled in the art are easy to expect: it all is feasible that said apparatus embodiment 1 and embodiment 2 combination in any are used, so the combination in any between said apparatus embodiment 1 and the embodiment 2 all is embodiment of the present invention, but this instructions has not just described in detail one by one at this as space is limited.
According to one of core idea of the present invention, the embodiment of the invention is applied in the reality, can obtain a kind of navigational system, with reference to figure 8, show the structured flowchart of a kind of navigational system embodiment of the present invention, described navigational system comprises navigation terminal 801 and navigation server 802, and wherein, described navigation terminal 801 further comprises with lower module:
Memory module 8011: the block map data that is used to store download;
Determination module 8012: be used for determining to meet according to user's current location the block map data of presetting rule, described block map data has the station location marker information and the version information of unique correspondence;
Request module 8013: comprise contrast request unit and download request unit; Described contrast request unit is used for when there has been the described block map data that meets presetting rule in described memory module 8011, sends the request that the version information that has the block map data of same position identification information in the map data base 8023 with the version information of described block map data and navigation server compares; Described download request unit is used for the inconsistent comparing result of version information that returns according to navigation server 802, and navigation server 802 sends the request of downloading this block map data;
Update module 8014: be used for block map data updated stored module 8011 corresponding map data blocks with described download;
Described navigation server 802 further comprises with lower module:
Interface module 8021: be used to receive the request that the request module 8013 of navigation terminal is sent, and navigation terminal 801 is returned result and met the block map data of presetting rule;
Processing module 8022: comprise contrast processing unit and download processing unit, described contrast processing unit is used for according to described contrast request version information being compared, and returns version information unanimity or the inconsistent result of version information; Described download processing unit is used for searching the block map data of coupling and being sent to interface module 8021 at map data base 8013 according to described download request;
Preferably, the memory module 8011 of described navigation terminal is local cache or other memory device.
Preferably, described navigation server 802 can also comprise with lower module:
Piecemeal processing module: be used for that map datum is carried out piecemeal and handle;
Information logging modle: be used for displaying ratio and coordinate position log location identification information according to the block map data behind the described piecemeal; And, according to the temporal information recording version information of the block map data behind the described piecemeal.
Preferably, described navigation server 802 can also comprise with lower module:
Server matching module: be used for needing the updated map data piece in the navigation server coupling;
Server update module: be used for upgrading the block map data of navigation server, the version information of the described block map data of new record of laying equal stress on.
Preferably, described determination module 8012 can comprise with lower unit:
Acquiring unit: be used to obtain default navigation circuit;
Choose the unit: be used for selecting the feature locations point at described navigation circuit according to user's current location;
Corresponding unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
As another embodiment, described determination module 8012 can comprise with lower unit:
Obtain the unit: the road information and the directional information that are used to obtain the user;
Generation unit: be used for generating prediction circuit with described road information and directional information according to user's current location;
Selected unit: be used at the selected feature locations point of described prediction circuit;
Processing unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
For system embodiment, because it is substantially corresponding to preceding method embodiment and system embodiment, so description is fairly simple, relevant part gets final product referring to the explanation of preceding method embodiment and system embodiment part.
More than data update apparatus and a kind of navigational system of the data-updating method of a kind of navigational system provided by the present invention, a kind of navigational system is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (12)
1, a kind of data-updating method of navigational system, described navigational system comprises navigation terminal and navigation server, it is characterized in that, described method comprises:
Determine to meet the block map data of presetting rule according to user's current location, described block map data has the station location marker information and the version information of unique correspondence;
If there has been described block map data in the described navigation terminal, then the version information that has the block map data of same position identification information in the version information of described block map data and the navigation server is compared, if it is inconsistent, then from navigation server, download described station location marker information corresponding map data block, upgrade block map data described in the navigation terminal.
2, the method for claim 1 is characterized in that, also comprises:
Map datum is carried out piecemeal to be handled;
Displaying ratio and coordinate position log location identification information according to the block map data behind the described piecemeal; And, according to the temporal information recording version information of the block map data behind the described piecemeal.
3, method as claimed in claim 2 is characterized in that, also comprises:
Coupling needs the updated map data piece in navigation server;
Upgrade described block map data, the version information of the described block map data of new record of laying equal stress on.
4, the method for claim 1 is characterized in that, determines block map data by following steps:
Obtain default navigation circuit;
Current location according to the user is selected the feature locations point at described navigation circuit;
Determine that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
5, the method for claim 1 is characterized in that, determines block map data by following steps:
Obtain user's road information and directional information;
Current location according to the user generates the prediction circuit with described road information and directional information;
Selected feature locations point in described prediction circuit;
Determine that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
6, a kind of data update apparatus of navigational system, wherein, described navigational system comprises navigation terminal and navigation server, it is characterized in that, described data update apparatus comprises:
Determination module: be used for determining to meet according to user's current location the block map data of presetting rule, described block map data has the station location marker information and the version information of unique correspondence;
Update module: be used for when there has been described block map data in described navigation terminal, the version information that has the block map data of same position identification information in the version information of described block map data and the navigation server is compared, if it is inconsistent, then from navigation server, download described station location marker information corresponding map data block, upgrade block map data described in the navigation terminal.
7, data update apparatus as claimed in claim 6 is characterized in that, also comprises:
Piecemeal processing module: be used for that map datum is carried out piecemeal and handle;
Information logging modle: be used for displaying ratio and coordinate position log location identification information according to the block map data behind the described piecemeal; And, according to the temporal information recording version information of the block map data behind the described piecemeal.
8, data update apparatus as claimed in claim 7 is characterized in that, also comprises:
Server matching module: be used for needing the updated map data piece in the navigation server coupling;
Server update module: be used for upgrading the block map data of navigation server, the version information of the described block map data of new record of laying equal stress on.
9, data update apparatus as claimed in claim 6 is characterized in that, described determination module comprises:
Acquiring unit: be used to obtain default navigation circuit;
Choose the unit: be used for selecting the feature locations point at described navigation circuit according to user's current location;
Corresponding unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
10, data update apparatus as claimed in claim 6 is characterized in that, described determination module comprises:
Obtain the unit: the road information and the directional information that are used to obtain the user;
Generation unit: be used for generating prediction circuit with described road information and directional information according to user's current location;
Selected unit: be used at the selected feature locations point of described prediction circuit;
Processing unit: be used for determining that user's current location and described feature locations point corresponding map data block are the geodata piece that meets presetting rule.
11, a kind of navigational system comprises navigation terminal and navigation server, it is characterized in that, described navigation terminal comprises:
Memory module: the block map data that is used to store download;
Determination module: be used for determining to meet according to user's current location the block map data of presetting rule, described block map data has the station location marker information and the version information of unique correspondence;
Request module: comprise contrast request unit and download request unit; Described contrast request unit is used for when there has been the described block map data that meets presetting rule in described memory module, sends the request that the version information that has the block map data of same position identification information in the map data base with the version information of described block map data and navigation server compares; Described download request unit is used for the inconsistent comparing result of version information that returns according to navigation server, and the navigation server sends the request of downloading this block map data;
Update module: be used for block map data updated stored module corresponding map data block with described download;
Described navigation server comprises:
Interface module: be used to receive the request that the request module of navigation terminal is sent, and the navigation terminal is returned result and met the block map data of presetting rule;
Processing module: comprise contrast processing unit and download processing unit, described contrast processing unit is used for according to described contrast request version information being compared, and returns version information unanimity or the inconsistent result of version information; Described download processing unit is used for searching the block map data of coupling and being sent to interface module at map data base according to described download request;
Map data base is used to store described block map data.
12, navigational system as claimed in claim 11 is characterized in that, the memory module of described navigation terminal is local cache or other memory device.
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| CNA200710119657XA CN101354261A (en) | 2007-07-27 | 2007-07-27 | System and method for updating data of navigation system and navigation system |
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| CNA200710119657XA CN101354261A (en) | 2007-07-27 | 2007-07-27 | System and method for updating data of navigation system and navigation system |
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