CN101957209B - Navigation device map data increment updating method - Google Patents
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- CN101957209B CN101957209B CN2009103043987A CN200910304398A CN101957209B CN 101957209 B CN101957209 B CN 101957209B CN 2009103043987 A CN2009103043987 A CN 2009103043987A CN 200910304398 A CN200910304398 A CN 200910304398A CN 101957209 B CN101957209 B CN 101957209B
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Abstract
The invention discloses a navigation device map data increment updating method which comprises the following steps of: starting a navigation program for setting a destination by a user; sending a difference update request to a server by a navigation device terminal; carrying out path calculation by the navigation device terminal, meanwhile, waiting for a server terminal to return difference update data; if difference data exists, carrying out map data update by the navigation device terminal and renewedly carrying out path planning and line guiding by utilizing the updated map data; and if the difference data does not exist, carrying out line guiding after a path is worked out. The method judges a range required to be updated according to a departure site and the destination of a of the user vehicle, thus the update range is greatly reduced, and the difference data file volume is small; when the map data is updated, the data flow is small, and the update speed is high; and compared with the traditional update method, the method of the invention has pertinence, is quicker and improves the map data update efficiency of the navigation device.
Description
Technical field
The present invention relates to a kind of map updating method of guider, relate in particular to a kind of incremental update method of guider map datum.
Background technology
Along with the development of GPS (GlobalPositioning System, be called for short GPS), will use the guider of GPS to be installed on the vehicles of navigation of various needs.The gps antenna at vehicle navigation device terminal receives the data message from the expression latitude of gps satellite transmission, longitude etc.; In conjunction with the electronic chart that is stored in the vehicle navigation device; The position coordinates of confirming through gps satellite signal is complementary therewith, confirms the accurate position of navigation object in electronic chart.Its trip that appears as people has brought a lot of facilities; The driver is as long as import the destination in the automobile navigation instrument; System will calculate only route automatically according to built-in electronic chart, and in the vehicle ' process, reminds the driver to note stroke at any time.In whole driving process, with considering the route problem, even if in complete strange city, navigating instrument can not lead the driver to walk to set destination to the motorist automatically yet.Therefore, the guider of realizing based on running fix and wireless interconnected network technology has become an indispensable part in people's life, has obtained developing by leaps and bounds.
Because communication navigation data comprises various cartographic informations, road information; So the data volume of communication navigation data is all very big; These a large amount of communication navigation datas often are stored on the guider when producing guider; But because navigation datas such as cartographic information, road information often will change after a time; If it is untimely that data can't be upgraded or upgrade, then the guided navigation information of guider will produce deviation with actual road conditions, thus the accuracy of influence navigation.For this reason, real-time and the accuracy that how effectively to guarantee map datum is that the major issue that solves is expected in the guider field for a long time.
To this problem; A solution of prior art is: the service supplier regularly is recorded in updated map data on certain storage medium; User's payment is directly installed this updating map data to behind the valency on the guider terminal, existing map datum is all replaced.Yet in reality, 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 receives the restriction of storage medium, and for bigger map datum, it is higher to upgrade cost.
As the improvement of preceding kind of method, the map datum after the service supplier will upgrade in time is uploaded to navigation server, and the user is through sending the request of renewal, through the corresponding updating map data of guider terminal downloads.But this scheme is because each more new capital is to upgrade whole map datums, so each data updated amount is very big, update time is long, and update efficiency is low; In addition; This scheme; Even the service supplier can guarantee the real-time and the accuracy of the map datum on the navigation server, but learning the message that the service supplier upgrades, the user needs certain hour, so the real-time of map datum and accuracy still can not get guaranteeing.
Chinese patent document CN 101319911A discloses " a kind of client of navigational system, service end and advance the map method for updating "; The update method that its adopts is: client obtains the current zone upgraded of needing, and sends the renewal request of appointed area and can reflect the version information of the regional current update mode of asking to service end; Client receives the data that service end is returned, and it is resolved, and has obtained taking place in the service end map elements data of the respective regions of renewal, and factor data upgrades the map datum and the version information of client respective regions according to the map.Though this update method only need be upgraded the map in request zone, has saved the regular hour, efficient also has raising, and the fresh information that will ask the zone that still adopts all covers the method for old information, and the amount of Updating Information is still very big.
To these deficiencies, a kind of increment updating technology appears, and promptly, only upgrade the data that there are differences between redaction and the early version, and needn't upgrade total data, thereby also be difference update based on the map data base of last version.That the advantage of this way is is faster, upgrade map more easily, make drive safer.In increment updating technology, general way is according to the map that upgrades periphery near the certain limit car.Chinese patent document CN 1570565A discloses, and a kind of " electronic map data storage and method for updating " promptly adopted increment updating technology; It is key element ID store map data and the map datum that utilizes map elements ID screening need to download according to the map, and the dynamic increment that can realize electronic chart is downloaded and upgraded.The user can be quick-downloading in this relevant electronic map data in driving path through the map datum service end, obtains the facility of dynamic navigation.Though this method from only upgrading required differential data, has significantly reduced data traffic, need data updated often only to relate to the variation of several roads in actual the use, therefore this update method specific aim not enough, nor fast enough.
Summary of the invention
The map datum incremental update method that the purpose of this invention is to provide a kind of with strong points, update efficiency is high, the user is easy to use guider is in order to solve the defective that update efficiency is low in the aforementioned prior art, specific aim is not strong.
The technical scheme that realizes the object of the invention is a kind of guider map datum incremental update method, may further comprise the steps:
1. begin Navigator, the user sets the destination;
2. guider terminal to server end sends the difference update request;
3. path computing is carried out at the guider terminal, and the waiting for server end returns the difference update data simultaneously;
If 4. there is differential data, the guider terminal is carried out map data update and is utilized the map datum after upgrading to carry out path planning and route guidance again; If there is not differential data, then calculating the laggard walking along the street line guiding in path.
The 2. in the step, and the difference update request condition is the versions of data number of LinkID and the departure place and the destination of departure place and destination.
The 3. in the step, after server end is received the difference update request, with the departure place to the destination on the way version number have the differential data of data updated piece to be ready to, and send the guider terminal to.
The 4. in the step, if there is differential data, the guider terminal stops calculating path immediately, begins to receive differential data, and by the differential data that receives former data is upgraded, and utilizes the map datum after upgrading to carry out path planning and route guidance again.
The 1. in the step, may further comprise the steps:
(a) open guider, the beginning Navigator;
(b) block map data ID and version number in car periphery certain limit collected at the guider terminal;
(c) according to the server end request whether differential data being arranged from car perimeter data version number;
(d) if redaction is arranged, then the differential data received of guider terminal parses carries out update processing to former data; If there is not redaction, finish to upgrade;
(e) user sets the destination.
In (c) step, when server end was received scope and version number, inquiry latest data version number had the differential data of data updated piece to be ready to version number, and sends the guider terminal to.
The forming process of said differential data is: comprise new and old map version in the server end; Guider terminal to server end sends the request of renewal, and server end compares the map datum of new and old map version, obtains differential data according to increasing data recording, delete data record and Updating Information to write down.
Said new and old map version comprises road, background, title, POI and other data messages respectively; Said differential data comprises road differential record, background subtraction member record, title difference record, POI difference record and other difference records.
After having adopted technique scheme; The present invention has following beneficial effect: (1) guider map datum of the present invention incremental update method is sent to server end with user's the departure place and the destination data of setting; These data comprise azimuth information and perimeter data version number; Server end number obtains corresponding difference update data according to versions of data in this scope, need to confirm the data updated content, at last this part differential data is on the way returned to the guider terminal; The guider terminal is carried out update processing with the incremental data that receives to former data; To obtain up-to-date map on the way, the data after final utilization is upgraded are carried out path computing again, to user's channeling conduct.The scope according to the user of the inventive method from car departure place and the renewal of destination judgement needs; More new range dwindles greatly, and the differential data file size is little, when map data update; Data traffic is little; Renewal speed is fast, and is also more quick targetedly than existing update method, improved the map data update efficient of guider.(2) request condition of upgrading in the inventive method promptly is defined as the versions of data number of LinkID and the departure place and the destination of departure place and destination; When the user uses like this; Only need the input destination, guider carries out the judgement from the ID of the departure place at car place and destination and versions of data number automatically, locks new and old map datum comparison range; Shorten user's stand-by period, made things convenient for user's operation.(3) the inventive method serves as according to carrying out path computing with original version earlier when the waiting for server end is passed the comparative result of new and old map datum back the guider terminal; Therefore; When the departure place when the data on the way of destination do not change; Need not to carry out path computing again after comparative result comes out by the time, navigation efficient is greatly improved.(4) the inventive method after the start, the input destination before, can carry out incremental update automatically to map datum, therefore from the car peripheral extent; If selected afterwards destination is promptly in the car peripheral extent; Then when start to the departure place to the destination on the way data carried out incremental update, behind the setting destination, can directly carry out path computing and route guidance; Need not to carry out again map data update and handle, convenient and quick.(5) the inventive method guider terminal to server end sends the request of renewal, and server end compares the map datum of new and old map version, obtains differential data according to increasing data recording, delete data record and Updating Information to write down.New and old map version comprises road, background, title, POI and other data messages respectively, and correspondingly, differential data comprises road differential record, background subtraction member record, title difference record, POI difference record and other difference records.The formation method of differential data is simple, and it is short to obtain the differential data required time, and data are accurate, thereby map data update efficient is high.
Description of drawings
For content of the present invention is more clearly understood, below according to specific embodiment and combine accompanying drawing, the present invention is done further detailed explanation, wherein:
Fig. 1 upgrades the process flow diagram of map from car and destination for basis in the guider map datum incremental update method of the present invention.
Fig. 2 is the process flow diagram that guider start back is upgraded map automatically in the guider map datum incremental update method of the present invention.
Fig. 3 is differential data content of the present invention and production process synoptic diagram.
Fig. 4 is the structured flowchart of guider of the present invention.
Embodiment
(embodiment 1)
See Fig. 4, the guider that present embodiment adopts comprises CPU element 1, GPS unit 2, touch-screen 3, interface circuit 4, sound circuit 5, display control unit 6, memory storage 7 and remote controller interface 8; GPS unit 2, touch-screen 3, interface circuit 4, sound circuit 5, display control unit 6, memory storage and remote controller interface 8 all with CPU element 1 two-way the electrical connection.
CPU element 1 is used for receiving and handling various instructions.
2 receptions of GPS unit detect the present position and the moving direction of vehicle from the signal of GPS position location satellite, and send into CPU element 1 to above-mentioned signal.
Touch-screen 3 is used for to CPU element 1 input operation instruction, such as setting the destination.Touch-screen 3 is gone back displayed map image simultaneously, and shows the simulaed path that calculating is confirmed through guidance path, receives key command simultaneously and touches instruction.
Interface circuit 4 provides interface for CMMB digital television apparatus 41, GPRS reception 42, bluetooth 43.
The voice data translation that sound circuit 5 is used for that CPU element 1 is sent here is a voice signal, and sends the voice suggestion of various operational notifications and route guidance through loudspeaker.
Display control unit 6 receives the signal from display control circuit 61, video-ram 62, graphics controller 63, and sends these information to CPU element 1.
Memory storage comprises ROM (read-only memory) 71, RAM (RAS) 72, Flash (flash memory) 73 and SDRAM9 synchronous DRAM) 74.
Remote controller interface 8 provides interface for telepilot.
See Fig. 1, the guider map datum incremental update method of present embodiment may further comprise the steps:
1. begin Navigator, the user is through touch-screen 3 setting destinations.
2. the CPU element 1 at guider terminal sends the difference update request to server end.The difference update request condition is the versions of data number of LinkID and the departure place and the destination of departure place and destination.
3. the CPU element 1 at guider terminal carries out path computing according to departure place and destination, and the waiting for server end returns the difference update data simultaneously.After the difference update request that server end is received the 2. the step is sent, with the departure place to the destination on the way version number have the differential data of data updated piece to be ready to, and send the CPU element 1 at guider terminal to.
If 4. there is differential data; The guider terminal stops calculating path immediately; The differential data that beginning reception server end returns; And by the differential data that receives former data are upgraded, utilize the map datum after upgrading to carry out path planning and route guidance again, route guidance is shown that on touch-screen 3 the lang sound of going forward side by side points out.If there is not differential data, then calculating the laggard walking along the street line guiding in path according to former map datum version.
See Fig. 3, comprise map N version (redaction) and map N-1 version (legacy version) in the server end, new and old map version comprises road, background, title, POI (PointOf Interest, point of interest) and other data messages respectively.Guider terminal to server end sends the request of renewal, and server end compares the map datum of new and old map version, obtains differential data according to increasing data recording, delete data record and Updating Information to write down.Differential data comprises road differential record, background subtraction member record, title difference record, POI difference record and other difference records.
(embodiment 2)
The guider that present embodiment and embodiment 1 adopts is identical, the generation type of differential data and content also with embodiment 1 in identical.1. the guider map datum incremental update method of present embodiment has increased start back auto-increment updating steps in the step at the of embodiment, may further comprise the steps specifically:
(a) open guider, the beginning Navigator.
(b) block map data ID and version number in car periphery certain limit collected at the guider terminal.
(c) according to the server end request whether differential data being arranged from car perimeter data version number; After server end was received scope and version number, inquiry latest data version number had the differential data of data updated piece to be ready to version number, and sends the guider terminal in this scope.
(d) if redaction is arranged, then the differential data received of guider terminal parses carries out update processing to former data; If there is not redaction, finish to upgrade.
(e) user sets the destination.
Afterwards according to described in the embodiment 1 to starting point to the destination on the way data carry out incremental update, and carry out path computing and route guidance according to the map datum after upgrading.Like this, if the destination promptly in the car peripheral extent, then when start to the departure place to the destination on the way data carried out incremental update; After setting the destination; Can directly carry out path computing and route guidance, need not to carry out again map data update and handle, convenient and quick.
Should be appreciated that specific embodiment described above only is used to explain the present invention, and be not used in qualification the present invention.Conspicuous variation of being extended out by spirit of the present invention or change still are among protection scope of the present invention.
Claims (6)
1. guider map datum incremental update method is characterized in that may further comprise the steps:
1. begin Navigator, the user sets the destination; Specifically comprise following steps:
(a) open guider, the beginning Navigator;
(b) block map data ID and version number in car periphery certain limit collected at the guider terminal;
(c) according to the server end request whether differential data being arranged from car perimeter data version number;
(d) if redaction is arranged, then the differential data received of guider terminal parses carries out update processing to former data; If there is not redaction, finish to upgrade;
(e) user sets the destination;
2. guider terminal to server end sends the difference update request; The difference update request condition is the versions of data number of LinkID and the departure place and the destination of departure place and destination;
3. path computing is carried out at the guider terminal, and the waiting for server end returns the difference update data simultaneously;
If 4. there is differential data, the guider terminal is carried out map data update and is utilized the map datum after upgrading to carry out path planning and route guidance again; If there is not differential data, then calculating the laggard walking along the street line guiding in path.
2. guider map datum incremental update method according to claim 1; It is characterized in that: the 3. in the step; After server end is received the difference update request, with the departure place to the destination on the way version number have the differential data of data updated piece to be ready to, and send the guider terminal to.
3. guider map datum incremental update method according to claim 2; It is characterized in that: the 4. in the step; If there is differential data, the guider terminal stops calculating path immediately, begins to receive differential data; And by the differential data that receives former data are upgraded, utilize the map datum after upgrading to carry out path planning and route guidance again.
4. guider map datum incremental update method according to claim 1; It is characterized in that: the 1. in (c) step in step; After server end is received scope and version number; Inquiry latest data version number has the differential data of data updated piece to be ready to version number, and sends the guider terminal to.
5. according to the described guider map datum of one of claim 1 to 4 incremental update method, it is characterized in that: the forming process of said differential data is: comprise new and old map version in the server end; Guider terminal to server end sends the request of renewal, and server end compares the map datum of new and old map version, obtains differential data according to increasing data recording, delete data record and Updating Information to write down.
6. guider map datum incremental update method according to claim 5 is characterized in that: said new and old map version comprises road, background, title, POI and other data messages respectively; Said differential data comprises road differential record, background subtraction member record, title difference record, POI difference record and other difference records.
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| CN2009103043987A CN101957209B (en) | 2009-07-15 | 2009-07-15 | Navigation device map data increment updating method |
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| CN2009103043987A CN101957209B (en) | 2009-07-15 | 2009-07-15 | Navigation device map data increment updating method |
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| CN101957209A CN101957209A (en) | 2011-01-26 |
| CN101957209B true CN101957209B (en) | 2012-07-18 |
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| CN2009103043987A Expired - Fee Related CN101957209B (en) | 2009-07-15 | 2009-07-15 | Navigation device map data increment updating method |
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| CN106595682B (en) * | 2016-12-16 | 2020-12-04 | 上海博泰悦臻网络技术服务有限公司 | Differential updating method and system for map data and server |
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