CN102209114A - Dynamic map downloading method, server and location-based service terminal - Google Patents
Dynamic map downloading method, server and location-based service terminal Download PDFInfo
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- CN102209114A CN102209114A CN2011101354349A CN201110135434A CN102209114A CN 102209114 A CN102209114 A CN 102209114A CN 2011101354349 A CN2011101354349 A CN 2011101354349A CN 201110135434 A CN201110135434 A CN 201110135434A CN 102209114 A CN102209114 A CN 102209114A
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Abstract
The invention discloses a dynamic map downloading method, a server and a location-based service terminal. The method comprises the following steps of: uploading current location information to the server, and determining a navigation path by interacting with the server; receiving electronic map data transmitted according to the received current location information and the determined navigation path from the server, wherein the electronic map data comprises map area data currently required to be displayed and the map area data in front of a running direction of the navigation path; displaying the map area data currently required to be displayed, and caching residual electronic map data; and when moving forwards according to the navigation path, displaying the cached electronic map data. By the dynamic map downloading method, the server and the location-based service terminal, a relatively larger memory space is not required, and in addition, the data many times that of a map display area can be downloaded at a time and cached so as to reduce dependence on a network rate, reduce network traffic and save the cost.
Description
Technical field
The present invention relates to the location-based service technology, relate in particular to a kind of dynamic map method for down loading, server and location-based service terminal.
Background technology
The location-based service terminal is meant the equipment with position service function and correlation function thereof.The location-based service terminal is example with the navigator, its operation principle is the position coordinates that navigator is determined ad-hoc location, the position coordinates of putting down in writing in the electronic chart with itself and self storage mates, and determines the accurate position of navigation object in electronic chart of this navigator of lift-launch with this.Navigator can be car-mounted terminal, portable navigation device, mobile phone terminal etc.Navigation object can be vehicle, pedestrian etc.After the user configured departure place and destination, navigator can be calculated guidance path, and according to calculate guidance path navigate for the user.
At present, the electronic chart in the location-based service terminal normally is installed in the terminal in advance by supplier, or before service beginning by the user according to oneself needs with the map of target administrative region by network download to the terminal so that location-based service to be provided.Because the electronic map data amount is huge day by day, this dual mode all needs terminal to have certain memory space to load electronic chart, thereby has proposed higher hardware requirement and increased the weight of the burden of terminal to terminal.On the other hand, because renewals such as road in the city and building terrestrial reference are very fast, the electronic chart that is contained in advance in the terminal also needs regular update to provide location-based service accurately to the user, and this has brought inconvenience and trouble for again undoubtedly the user of location-based service terminal.
Electronic map data under the another kind of situation is stored in network server end, the location-based service terminal is downloaded map datum and is shown from server end by online mode, this mode takies less to the storage resources of position service terminal, but very big to the network dependence, especially user experience is relatively poor under the relatively poor condition of network stabilization and congestion condition.In addition, in general, adopt the location-based service terminal of this method only to download the map datum that current map display interface can show, when user's moving map show or can be often with car position change change display position the time need be to server end request updating map data, cause using user's the network traffics expense expenditure of this mode very high.
Summary of the invention
The technical problem to be solved in the present invention is, at needing when electronic chart is downloaded to carry out big memory space in the prior art or, provide all less dynamic map method for down loading of a kind of required memory capacity and network traffics, server and location-based service terminal to the defective of network dependence height and expense costliness.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of dynamic map method for down loading is provided, comprises:
Upload current location information to server, and by with described server interaction, determine a bar navigation path;
Receive described server according to the described current location information that receives and determine that the electronic map data that the guidance path that obtains sends, described electronic map data comprise the map area data of current needs demonstration and according to the map area data in described guidance path travel direction the place ahead;
Show map area data and the remaining electronic map data of buffer memory that described current needs show;
When moving forward, show the electronic map data of described buffer memory according to described guidance path.
In the dynamic map method for down loading of the present invention, described dynamic map method for down loading also comprises:
Receive described server according to the current location information that receives and the guidance path of determining to obtain issue induce data;
And according to the described data prompting of being correlated with, described voice, image and/or the Word message of inducing data to comprise the relevant position of inducing.
The present invention also provides a kind of location-based service terminal, comprising:
The terminal interaction module is used for server interaction and according to the described mutual bar navigation path of determining;
The terminal transceiver module, be used for uploading current location information to described server, also be used to receive described server according to the described current location information that receives and the electronic map data that sends of the guidance path of determining to obtain, described electronic map data comprises the map area data of current needs demonstration and according to the map area data in described guidance path travel direction the place ahead;
Display module is used to the map area data that show that described current needs show;
Cache module is used for the remaining electronic map data of buffer memory, and when moving forward according to described guidance path the electronic map data of described buffer memory is sent to described display module and shows.
In the location-based service terminal of the present invention, described location-based service terminal also comprises induces reminding module, be used for inducing the data prompting of being correlated with according to what described terminal transceiver module received, described voice, image and/or Word message of inducing data to comprise the relevant position, and the described data of inducing are that described server is according to the current location information that receives and determine that the guidance path that obtains issues.
The present invention also provides a kind of dynamic map method for down loading, comprising:
Receive current location information from the location-based service terminal, and by with described location-based service terminal interaction, determine a bar navigation path;
According to the described current location information that receives and determine the guidance path that the obtains sub-map datum that under described location-based service terminal, conducts electricity, described electronic map data comprises map area data that the current needs of location-based service terminal show and the described location-based service terminal map area data according to described guidance path travel direction the place ahead, the described current map area data that need to show are shown that by described location-based service terminal remaining electronic map data is carried out demonstration by described location-based service terminal buffers and when described location-based service terminal moves forward according to described guidance path.
In the dynamic map method for down loading of the present invention, described dynamic map method for down loading also comprises: judge whether the displacement when described location-based service terminal moves forward according to described guidance path surpasses predetermined threshold value, if, then send electronic map data to described location-based service terminal once more, the electronic map data of Fa Songing does not comprise the electronic map data that has sent once more.
In the dynamic map method for down loading of the present invention, described dynamic map method for down loading also comprises:
According to the described current location information that receives and determine that the guidance path that obtains issues to described location-based service terminal and induce data, so that described location-based service terminal is according to the described data prompting of being correlated with, described voice, image and/or the Word message of inducing data to comprise the relevant position of inducing.
The present invention also provides a kind of server, comprising:
The server interaction module is used for the location-based service terminal interaction and according to the described mutual bar navigation path of determining;
The server transceiver module, be used for receiving current location information from described location-based service terminal, the guidance path that also is used for according to the described current location information that receives and determines the to obtain sub-map datum that under described location-based service terminal, conducts electricity, described electronic map data comprises map area data that the current needs of location-based service terminal show and the described location-based service terminal map area data according to described guidance path travel direction the place ahead, the described current map area data that need to show are shown that by described location-based service terminal remaining electronic map data is carried out demonstration by described location-based service terminal buffers and when described location-based service terminal moves forward according to described guidance path.
In the server of the present invention, described server also comprises the transmission judge module, described transmission judge module is used for: judge whether the displacement when described location-based service terminal moves forward according to described guidance path surpasses predetermined threshold value, if, then notify described server transceiver module to send electronic map data to described location-based service terminal once more, the electronic map data of Fa Songing does not comprise the electronic map data that has sent once more.
In the server of the present invention, described server also comprises induces data module, the described data module of inducing is used for: according to the described current location information that receives and determine that the guidance path that obtains generates and induce data, and issue the described data of inducing to described location-based service terminal by described server transceiver module, so that described location-based service terminal is according to the described data prompting of being correlated with, described voice, image and/or the Word message of inducing data to comprise the relevant position of inducing.
The beneficial effect of a kind of dynamic map method for down loading of the present invention, server and location-based service terminal is: carry out electronic chart according to guidance path and download, only download current map area data that show and the place ahead map area data that move forward according to guidance path of needing, need not store in large quantities diagram data thereby not need bigger memory space, reduced requirement, provided cost savings position service terminal related hardware.Simultaneously, owing to download the place ahead map area data in advance and, can reduce dependence, reduce network traffics, cost saving to network rate with its buffer memory.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the block diagram of location-based service terminal according to an embodiment of the invention;
Fig. 2 is the block diagram of location-based service terminal in accordance with another embodiment of the present invention;
Fig. 3 is the schematic diagram of asking map area according to an embodiment of the invention;
Fig. 4 is the schematic diagram of asking map area in accordance with another embodiment of the present invention;
Fig. 5 is the flow chart of end side dynamic map method for down loading according to an embodiment of the invention;
Fig. 6 is the block diagram of server according to an embodiment of the invention;
Fig. 7 is the block diagram of server in accordance with another embodiment of the present invention;
Fig. 8 is the flow chart of server side dynamic map method for down loading according to an embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 is the block diagram of location-based service terminal according to an embodiment of the invention.In the present embodiment, location-based service terminal comprises terminal interaction module 110, terminal transceiver module 120, display module 130 and cache module 140.
In the present embodiment, if store the destination locations that the user needs in the service terminal of position, terminal interaction module 110 can directly send destination locations information to server so.If in the service terminal of position, do not store the destination locations that the user needs, terminal interaction module 110 can be carried out voice with server or the word message communication is mutual so, makes server find the destination locations information of user's needs according to interaction content in the electronic map data of server stores.
In the course of the work, terminal transceiver module 120 can be uploaded current location information to server, terminal interaction module 110 can with server interaction, and determine a bar navigation path according to mutual.For example, terminal interaction module 110 can with server interaction, so that server is determined destination locations information, thereby make current location information that server can upload according to terminal transceiver module 120 and obtain at least one path planning with the terminal interaction module 110 mutual destination locations information calculations of determining.Then, terminal interaction module 110 mutual once more by with server determines that a user-selected path planning is as guidance path.
Then, terminal transceiver module 120 can reception server according to the current location information that receives and the electronic map data that sends of the guidance path of determining to obtain.Wherein, the electronic map data of terminal transceiver module 120 receptions can comprise the map area data in travel direction the place ahead when the map area data of the current needs demonstration of location-based service terminal and the guidance path that this location-based service terminal basis is determined navigate.
At last, the current map area data that show of needing that can display terminal transceiver module 120 receive from server of display module 130.Simultaneously, cache module 140 can the remaining electronic map data of buffer memory, the map area data in travel direction the place ahead when promptly this location-based service terminal is navigated according to the guidance path of determining.
When the location-based service terminal moves forward according to determined guidance path, along with moving ahead of location-based service terminals, the current location of location-based service terminal changes, for the sign (for example car mark) that keeps representing the current position of location-based service terminal is in the predeterminated position (for example central authorities) of map display area all the time, display module 130 shown map area also move along with moving of the current position of location-based service terminal.At this moment, cache module 140 can be sent to the electronic map data of above-mentioned buffer memory display module 130 and shows.
A kind of location-based service terminal of the present invention is carried out electronic chart according to guidance path and is downloaded, only download current map area data that show and the place ahead map area data that move forward according to guidance path of needing, need not store in large quantities diagram data thereby not need bigger memory space, reduced requirement, provided cost savings position service terminal related hardware.Simultaneously, owing to download the place ahead map area data in advance and, can reduce dependence, reduce network traffics, cost saving to network rate with its buffer memory.
Fig. 2 is the block diagram of location-based service terminal in accordance with another embodiment of the present invention.In the present embodiment, location-based service terminal comprises terminal interaction module 110, terminal transceiver module 120, display module 130, cache module 140, induces reminding module 150 and downloads judge module 160.Wherein, terminal interaction module 110, terminal transceiver module 120, display module 130 and cache module 140 are described in detail with reference to figure 1.
Except with reference to the figure 1 described function, in general, terminal transceiver module 120 can also send the map download request so that server issues the associated electrical map datum according to the guidance path of determining to server after terminal interaction module 110 has been determined guidance path.Can comprise in the map download request the required map displaying ratio chi of terminal, terminal map display size (for example screen size) and the request map area in any one or multiple.But the present invention is not limited to this, and for example engineer's scale can also be suitable according to the guidance path selection by server.Again for example, when terminal models was unified, the map display size can also be the size of default setting in the server.Again for example, the request map area can be the default zone that comprises location-based service terminal current location, also can be to comprise the map datum of current needs demonstration and the zone of above-mentioned the place ahead map datum.Shown in Fig. 3 or 4, the server map datum zone that sends of download request according to the map can be the 1-6 of the map display size of terminal size doubly, and in addition, the electronic map data that its sends also comprises guidance path.
Induce reminding module 150 can be used for inducing the data prompting of be correlated with according to what terminal transceiver module 120 received, these induce data is current location informations of receiving of server basis and determines that the guidance path that obtains issues.Wherein, the data of inducing of inducing reminding module 150 and being received can comprise voice, image and/or the Word message of relevant position (for example critical positions such as crossing, turning point, significant position).For example, induce data to comprise to be used for indicate the location-based service terminals information of voice prompt, crossing actual scene image information, text message prompting and the distance prompt etc. of the direction of advance of complex crossing any one or multiple.For example, induce data can be carried in the electronic map data and electronic map data is received from server by terminal transceiver module 120 together.At this moment, induce reminding module 150 can be used to detect this location-based service terminal whether drive to received induce the pairing position of data, induce data if then trigger, and then carry out corresponding voice suggestion, image display reminding and/or text prompt.Again for example, to induce data can also be server according to the terminal transceiver module 120 of location-based service terminal regularly (for example 5 seconds or 10 seconds once) current location information of uploading judge that the back sends.At this moment, server can judge whether this location-based service terminal arrives the position that needs are induced prompting according to the current location of location-based service terminal, if then send the data of inducing of this position correspondence to this location-based service terminal.After inducing reminding module 150 to receive this and induce data, induce data to carry out voice suggestion, image display reminding and/or text prompt thereby can directly trigger this by terminal transceiver module 120.Induce reminding module 150 by increase, practicality that can the enhanced navigation path makes the navigation of location-based service terminal more directly perceived, thereby makes things convenient for the user to utilize guidance path to navigate better.
Download judge module 160 and can be used to judge whether the displacement when this location-based service terminal moves forward according to guidance path surpasses predetermined threshold value (for example whether above the width of screen or half of height, or whether the location-based service terminal has rolled former map viewing area away from), and when surpassing, send the map download request to server, and receive electronic map data from server once more by terminal transceiver module 120 by terminal transceiver module 120.Downloading judge module 160 can also be before terminal transceiver module 120 sends the map download request, judge request map area data part buffer memory in cache module 140 whether wherein, if have, then download judge module 160 and revise the request map area, thereby only download electronic map data and the guidance path data that do not have buffer memory in the cache module 140 to server requests by terminal transceiver module 120.
In another embodiment of the present invention, location-based service terminal can not comprise downloads judge module 160.Because the location-based service terminal can regularly be uploaded current location information to server by terminal transceiver module 120, can judge according to the current location information of location-based service terminal whether the displacement of this location-based service terminal surpasses threshold value (for example whether surpass the width of screen or half of height, or whether the location-based service terminal having rolled former map viewing area away from) by server.When surpassing, the location-based service terminal can be directly by the electronic map data of terminal transceiver module 120 reception servers according to the current location transmission of terminal.Whether server also can be prejudged the electronic map data that need to send and send before before transmission, if the electronic map data that did not only send then.
In a preferred embodiment of the invention, when the sign (the car marks as shown in Fig. 3 and 4) that keeps expression location-based service terminal position was in the predeterminated position of map display area (for example screen) all the time, this predeterminated position can be partial to a side opposite with the terminal direction of advance in the map.For example, if terminals are current to be shown as on map to right travel, the car mark can be positioned at the map left side so.With the car mark be placed on map display area central authorities compare, can show that so more multirow is sailed the map in direction the place ahead, user-friendly electronic chart.
Though more than described specific embodiments more of the present invention and feature, this only is an illustrative purposes for example, and is not used in restriction the present invention.In other embodiments of the invention, can also comprise combination in any, distortion, the alternative and expansion of above-mentioned any embodiment and feature.
Fig. 5 is the flow chart of end side dynamic map method for down loading according to an embodiment of the invention.In the present embodiment, end side dynamic map method for down loading starts from step 510.
In step 510, upload current location information to server, and by with server interaction, determine a bar navigation path.In navigation system, the location-based service terminal generally regularly (for example every 5 seconds or 10 seconds) upload the current location information of oneself to server, the current location information of location-based service terminal by obtaining satellite-signal (for example gps satellite) in real time thus calculate.All right and the server interaction of location-based service terminal, so that server is determined destination locations information, thereby make current location information that server can upload according to the location-based service terminal and obtain at least one path planning with destination locations information calculations that the location-based service terminal interaction is determined.Then, location-based service terminal mutual once more by with server determines that a user-selected path planning is as guidance path.
In the present embodiment, if store the destination locations that the user needs in the service terminal of position, this location-based service terminal can directly send destination locations information to server so.If in the service terminal of position, do not store the destination locations that the user needs, this location-based service terminal can be carried out voice with server or the word message communication is mutual so, makes server find the destination locations information of user's needs according to interaction content in the electronic map data of server stores.
In step 520, reception server is according to the current location information that receives and the electronic map data that sends of the guidance path of determining to obtain.Wherein, the electronic map data of reception can comprise the map area data in travel direction the place ahead when the map area data of the current needs demonstration of location-based service terminal and the guidance path that this location-based service terminal basis is determined navigate.
In step 530, show current map area data and the remaining electronic map data of buffer memory that needs demonstration, the map area data in travel direction the place ahead when promptly this location-based service terminal is navigated according to the guidance path of determining.
In step 540, when the location-based service terminal moves forward according to guidance path, the electronic map data of display buffer.When the location-based service terminal moves forward according to determined guidance path, along with moving ahead of location-based service terminals, the current location of location-based service terminal changes, for the sign (for example car mark) that keeps representing the current position of location-based service terminal is in the predeterminated position (for example central authorities) of map display area all the time, the shown map area of location-based service terminal also moves along with moving of the current position of location-based service terminal.At this moment, location-based service terminal can show the electronic map data of above-mentioned buffer memory.
A kind of dynamic map method for down loading of the present invention carries out electronic chart according to guidance path and downloads, only download current map area data that show and the place ahead map area data that move forward according to guidance path of needing, need not store in large quantities diagram data thereby not need bigger memory space, reduced requirement, provided cost savings position service terminal related hardware.Simultaneously, owing to download the place ahead map area data in advance and, can reduce dependence, reduce network traffics, cost saving to network rate with its buffer memory.
In some embodiments of the invention, in step 520, the location-based service terminal can also be sent the map download request so that server issues the associated electrical map datum according to the guidance path of determining to server after having determined guidance path.Can comprise in the map download request the required map displaying ratio chi of terminal, terminal map display size (for example screen size) and the request map area in any one or multiple.But the present invention is not limited to this, and for example engineer's scale can also be suitable according to the guidance path selection by server.Again for example, when terminal models was unified, the map display size can also be the size of default setting in the server.Again for example, the request map area can be the default zone that comprises location-based service terminal current location, also can be to comprise the map datum of current needs demonstration and the zone of above-mentioned the place ahead map datum.Shown in Fig. 3 or 4, the server map datum zone that sends of download request according to the map can be the 1-6 of the map display size of terminal size doubly, and in addition, the electronic map data that its sends also comprises guidance path.
In a preferred embodiment of the invention, in step 530 and step 540, the location-based service terminal can also show at least one path planning that this location-based service terminal is received and definite guidance path except showing electronic map data.Path planning or navigation route information comprise the positional information of a plurality of points on path planning or the guidance path respectively at least, and longitude and latitude data or position encoded (for example the K sign indicating number that provides of Kai Lide company etc. can unique coding of determining this position) of each position can be provided its positional information.But, the present invention is not limited to this, in other embodiments of the invention, path planning or navigation route information can also comprise the positional information of a full curve on electronic chart of whole piece path planning or guidance path, rather than the positional information of wherein some points.Show path planning, can make things convenient for the user therefrom to select one as guidance path, and the show navigator path, can be so that the user of location-based service terminal uses this guidance path to navigate.But the present invention is not limited to this, can also provide path planning and guidance path to the user by suitable methods such as voice suggestions.
In another preferred embodiment of the present invention, in step 520,530 and/or 540, the location-based service terminal can also receive from server and induces the data line correlation prompting of going forward side by side, and these induce data is that server is according to the current location information that receives and determine that the guidance path that obtains issues.Wherein, the data of inducing that received can comprise voice, image and/or the Word message of relevant position (for example critical positions such as crossing, turning point, significant position).For example, induce data to comprise to be used for indicate the location-based service terminals information of voice prompt, crossing actual scene image information, text message prompting and the distance prompt etc. of the direction of advance of complex crossing any one or multiple.Induce data and according to inducing the data prompting of being correlated with by reception, practicality that can the enhanced navigation path makes the navigation of location-based service terminal more directly perceived, thereby makes things convenient for the user to utilize guidance path to navigate better.For example, induce data can be carried in the electronic map data and electronic map data receives from server together.At this moment, the location-based service terminal can detect automatically oneself whether drive to received induce the pairing position of data, induce data if then trigger, and then carry out corresponding voice suggestion, image display reminding and/or text prompt.Again for example, to induce data can also be server according to the location-based service terminal regularly (for example 5 seconds or 10 seconds once) current location information of uploading judge that the back sends.At this moment, server can judge whether this location-based service terminal arrives the position that needs are induced prompting according to the current location of location-based service terminal, if then send the data of inducing of this position correspondence to this location-based service terminal.The location-based service terminal receives this induce data after, induce data to carry out voice suggestion, image display reminding and/or text prompt thereby can directly trigger this.
In some embodiments of the invention, the location-based service terminal can judge whether the displacement when oneself moves forward according to guidance path surpasses predetermined threshold value and (for example whether surpass the width of screen or half of height, or whether the location-based service terminal has rolled former map viewing area away from), and when surpassing, send the map download request, and receive electronic map data from server once more to server.The location-based service terminal can also be before sending the map download request, judge request map area data part buffer memory whether wherein, if have, then revise the request map area, thereby only download electronic map data and the guidance path data that do not have buffer memory to server requests.
In other embodiment of the present invention, because the location-based service terminal is regularly uploaded current location information to server, can judge according to the current location information of location-based service terminal whether the displacement of this location-based service terminal surpasses threshold value (for example whether surpass the width of screen or half of height, or whether the location-based service terminal having rolled former map viewing area away from) by server.When surpassing, the location-based service terminal directly reception server according to the electronic map data of the current location transmission of terminal.Whether server also can be prejudged the electronic map data that need to send and send before before transmission, if the electronic map data that did not only send then.
In another preferred embodiment of the present invention, when the sign (the car marks as shown in Fig. 3 and 4) that keeps expression location-based service terminal position was in the predeterminated position of map display area (for example screen) all the time, this predeterminated position can be partial to a side opposite with the terminal direction of advance in the map.For example, if terminals are current to be shown as on map to right travel, the car mark can be positioned at the map left side so.With the car mark be placed on map display area central authorities compare, can show that so more multirow is sailed the map in direction the place ahead, user-friendly electronic chart.
Though more than described specific embodiments more of the present invention and feature, this only is an illustrative purposes for example, and is not used in restriction the present invention.In other embodiments of the invention, can also comprise combination in any, distortion, the alternative and expansion of above-mentioned any embodiment and feature.
Fig. 6 is the block diagram of server according to an embodiment of the invention.In the present embodiment, server comprises server interaction module 610 and server transceiver module 620.
In the present embodiment, if store the destination locations that the user needs in the service terminal of position, server interaction module so 610 can directly receive destination locations information from the location-based service terminal.If in the service terminal of position, do not store the destination locations that the user needs, server interaction module so 610 can carry out voice with the location-based service terminal or the word message communication is mutual, so that server finds the destination locations information of user's needs in the electronic map data of this server stores according to interaction content.
Server transceiver module 620 can be used for receiving current location information from the location-based service terminal, can also be used for according to received current location information and the guidance path determining the to obtain sub-map datum that conducts electricity under the location-based service terminal.Wherein, the electronic map data of server transceiver module 620 transmissions can comprise the map area data in travel direction the place ahead when the map area data of the current needs demonstration of location-based service terminal and the guidance path that this location-based service terminal basis is determined navigate.In navigation system, server transceiver module 620 generally regularly (for example every 5 seconds or 10 seconds) receive the current location information of this terminal from the location-based service terminal, the current location information of location-based service terminal by obtaining satellite-signal (for example gps satellite) in real time thus calculate.The current map area data that need to show that server transceiver module 620 sends can be shown immediately by the location-based service terminal, remaining electronic map data, the map area data in travel direction the place ahead can be carried out demonstration by this location-based service terminal buffers and when this location-based service terminal moves forward according to determined guidance path when promptly this location-based service terminal was navigated according to the guidance path of determining.
In the course of the work, server transceiver module 620 can receive current location information from the location-based service terminal.In navigation system, server transceiver module 620 generally regularly (for example every 5 seconds or 10 seconds) receive the current location information of this terminal from the location-based service terminal, the current location information of location-based service terminal by obtaining satellite-signal (for example gps satellite) in real time thus calculate.Simultaneously, server interaction module 610 can with the location-based service terminal interaction, and determine a bar navigation path according to mutual.For example, server interaction module 610 can with the location-based service terminal interaction, and determine destination locations information, thereby make current location information of terminal that server can receive according to server transceiver module 620 and obtain at least one path planning with destination locations information calculations that server interaction module 610 and location-based service terminal interaction are determined according to mutual.Then, server interaction module 610 mutual once more by with the location-based service terminal determines that a user-selected path planning is as guidance path.
Then, server transceiver module 620 can and be determined the guidance path that the obtains sub-map datum that conducts electricity according to received current location information under the location-based service terminal.Wherein, the electronic map data of server transceiver module 620 transmissions can comprise the map area data in travel direction the place ahead when the map area data of the current needs demonstration of location-based service terminal and the guidance path that this location-based service terminal basis is determined navigate.The current map area data that need to show that server transceiver module 620 sends can be shown immediately by the location-based service terminal, remaining electronic map data, the map area data in travel direction the place ahead can be carried out demonstration by this location-based service terminal buffers and when this location-based service terminal moves forward according to determined guidance path when promptly this location-based service terminal was navigated according to the guidance path of determining.
A kind of server of the present invention is according to the sub-map that conducts electricity under the guidance path, only open position is put current map area data that show and the place ahead map area data that move forward according to guidance path of needing of service terminal down, make the location-based service terminal need not store in large quantities diagram data thereby do not need bigger memory space, reduced requirement, provided cost savings position service terminal related hardware.Simultaneously,, can reduce the dependence of terminal, reduce network traffics, cost saving network rate owing to pass the place ahead map area data and make terminal down in advance with its buffer memory.
Fig. 7 is the block diagram of server in accordance with another embodiment of the present invention.In the present embodiment, server comprises server interaction module 610, server transceiver module 620, induces data module 630 and sends judge module 640.Wherein, server interaction module 610 and server transceiver module 620 are described in detail with reference to figure 6.
Except with reference to the figure 6 described functions, in general, server transceiver module 620 can also be after server interaction module 610 have been determined guidance path, the map download request that the receiving position service terminal sends to server according to the guidance path of determining is so that server transceiver module 620 issues the associated electrical map datum according to this map download request.Can comprise in the map download request the required map displaying ratio chi of terminal, terminal map display size (for example screen size) and the request map area in any one or multiple.But the present invention is not limited to this, and for example engineer's scale can also be suitable according to the guidance path selection by server.Again for example, when terminal models was unified, the map display size can also be the size of default setting in the server.Again for example, the request map area can be the default zone that comprises location-based service terminal current location, also can be to comprise the map datum of current needs demonstration and the zone of above-mentioned the place ahead map datum.Shown in Fig. 3 or 4, the server map datum zone that sends of download request according to the map can be the 1-6 of the map display size of terminal size doubly, and in addition, the electronic map data that its sends also comprises guidance path.
Induce current location information that data module 630 can receive according to server transceiver module 620 and server interaction module 610 to determine that the guidance path that obtains generates and induce data, and send the prompting of inducing data to the location-based service terminal so that this location-based service terminal is correlated with by server transceiver module 620.The data of inducing that send can comprise voice, image and/or the Word message of relevant position (for example critical positions such as crossing, turning point, significant position).For example, induce data to comprise to be used for indicate the location-based service terminals information of voice prompt, crossing actual scene image information, text message prompting and the distance prompt etc. of the direction of advance of complex crossing any one or multiple.For example, induce data module 630 to induce data carry in electronic map data with what generate, server transceiver module 620 will induce data and electronic map data to send to the location-based service terminal together, so that the location-based service terminal detect voluntarily oneself whether drive to received induce the pairing position of data, if then trigger and induce data, and then carry out corresponding voice suggestion, image display reminding and/or text prompt.Again for example, induce data module 630 can also according to the location-based service terminal regularly (for example 5 seconds or 10 seconds once) current location information of uploading judge whether to generate and induce data.At this moment, induce data module 630 to judge whether this location-based service terminal arrives the position that needs are induced prompting according to the current location of location-based service terminal, if then generate inducing data and send this to this location-based service terminal and inducing data of this position correspondence, then be left intact if not by server transceiver module 620.The location-based service terminal receives this induce data after, induce data to carry out voice suggestion, image display reminding and/or text prompt thereby can directly trigger this.
Send the current location information that judge module 640 can regularly be uploaded according to the location-based service terminal, judge whether the displacement when this location-based service terminal moves forward according to guidance path surpasses threshold value (for example whether surpass the width of screen or half of height, or whether the location-based service terminal having rolled former map viewing area away from).When surpassing, send judge module 640 and can send electronic map data to this location-based service terminal once more by announcement server transceiver module 620.Send judge module 640 and can also before server transceiver module 620 sends once more, prejudge and need the electronic map data of transmission whether sending before, if the electronic map data that did not only send then.
In another embodiment of the present invention, server can not comprise transmission judge module 640.Whether the displacement when can judge that oneself moves forward according to guidance path this moment by the location-based service terminal surpasses predetermined threshold value and (for example whether surpasses the width of screen or half of height, or whether the location-based service terminal has rolled former map viewing area away from), and when surpassing, send the map download request to server.Server transceiver module 620 sends electronic map data according to this map download request to this location-based service terminal after receiving the map download request from the location-based service terminal once more.The location-based service terminal is before sending the map download request, also can judge request map area data part buffer memory whether wherein, if then revise the request map area, thereby only download electronic map data and the guidance path data that do not have buffer memory to server requests.
Though more than described specific embodiments more of the present invention and feature, this only is an illustrative purposes for example, and is not used in restriction the present invention.In other embodiments of the invention, can also comprise combination in any, distortion, the alternative and expansion of above-mentioned any embodiment and feature.
Fig. 8 is the flow chart of server side dynamic map method for down loading according to an embodiment of the invention.In the present embodiment, server side dynamic map method for down loading starts from step 810.
In step 810, receive current location information from the location-based service terminal, and by with this location-based service terminal interaction, determine a bar navigation path.In navigation system, server generally regularly (for example every 5 seconds or 10 seconds) receive the current location information of this terminal from the location-based service terminal, the current location information of location-based service terminal by obtaining satellite-signal (for example gps satellite) in real time thus calculate.Server can also with the location-based service terminal interaction, and determine a bar navigation path according to mutual.For example, server can with the location-based service terminal interaction, and according to mutual definite destination locations information, thereby make server can and determine that the destination locations information calculations that obtains obtains at least one path planning according to the current location information of terminal that is received.Then, what server can be by with the location-based service terminal is mutual once more, determines that a user-selected path planning is as guidance path.
In the present embodiment, if store the destination locations that the user needs in the service terminal of position, server can directly receive destination locations information from the location-based service terminal so.If in the service terminal of position, do not store the destination locations that the user needs, server can carry out voice with the location-based service terminal or the word message communication is mutual so, so that server finds the destination locations information of user's needs in the electronic map data of this server stores according to interaction content.
In step 820, according to received current location information and determine the guidance path that the obtains sub-map datum that under the location-based service terminal, conducts electricity.Wherein, the electronic map data of following biography can comprise the map area data in travel direction the place ahead when the map area data of the current needs demonstration of location-based service terminal and the guidance path that this location-based service terminal basis is determined navigate.The current map area data that need to show that server sends can be shown immediately by the location-based service terminal, remaining electronic map data, the map area data in travel direction the place ahead can be carried out demonstration by this location-based service terminal buffers and when this location-based service terminal moves forward according to determined guidance path when promptly this location-based service terminal was navigated according to the guidance path of determining.
A kind of server side dynamic map of the present invention method for down loading is according to the sub-map that conducts electricity under the guidance path, only open position is put current map area data that show and the place ahead map area data that move forward according to guidance path of needing of service terminal down, make the location-based service terminal need not store in large quantities diagram data thereby do not need bigger memory space, reduced requirement, provided cost savings position service terminal related hardware.Simultaneously,, can reduce the dependence of terminal, reduce network traffics, cost saving network rate owing to pass the place ahead map area data and make terminal down in advance with its buffer memory.
In some embodiments of the invention, in step 820, server can also be after having determined guidance path, and the map download request that the receiving position service terminal sends to server according to the guidance path of determining is so that issue the associated electrical map datum according to this map download request.Can comprise in the map download request the required map displaying ratio chi of terminal, terminal map display size (for example screen size) and the request map area in any one or multiple.But the present invention is not limited to this, and for example engineer's scale can also be suitable according to the guidance path selection by server.Again for example, when terminal models was unified, the map display size can also be the size of default setting in the server.Again for example, the request map area can be the default zone that comprises location-based service terminal current location, also can be to comprise the map datum of current needs demonstration and the zone of above-mentioned the place ahead map datum.Shown in Fig. 3 or 4, the server map datum zone that sends of download request according to the map can be the 1-6 of the map display size of terminal size doubly, and in addition, the electronic map data that its sends also comprises guidance path.
In a preferred embodiment of the invention, in step 820, server side dynamic map method for down loading can also comprise generating according to the current location information that is received and determined guidance path induces data, and sends the prompting so that this location-based service terminal is correlated with of inducing data to the location-based service terminal.The data of inducing that send can comprise voice, image and/or the Word message of relevant position (for example critical positions such as crossing, turning point, significant position).For example, induce data to comprise to be used for indicate the location-based service terminals information of voice prompt, crossing actual scene image information, text message prompting and the distance prompt etc. of the direction of advance of complex crossing any one or multiple.Induce data by generating and sending, practicality that can the enhanced navigation path makes the navigation of location-based service terminal more directly perceived, thereby makes things convenient for the user to utilize guidance path to navigate better.For example, can induce data carry in electronic map data with what generate, to induce data and electronic map data to send to the location-based service terminal together, so that the location-based service terminal detect voluntarily oneself whether drive to received induce the pairing position of data, if then trigger and induce data, and then carry out corresponding voice suggestion, image display reminding and/or text prompt.Again for example, server can also according to the location-based service terminal regularly (for example 5 seconds or 10 seconds once) current location information of uploading judge whether to generate and induce data.For example server can judge whether this location-based service terminal arrives the position that needs are induced prompting according to the current location of location-based service terminal, if then generate inducing data and send this and inducing data of this position correspondence, then be left intact if not to this location-based service terminal.The location-based service terminal receives this induce data after, induce data to carry out voice suggestion, image display reminding and/or text prompt thereby can directly trigger this.
In some embodiments of the invention, in step 820, the current location information that server can also regularly be uploaded according to the location-based service terminal, judge whether the displacement when this location-based service terminal moves forward according to guidance path surpasses threshold value (for example whether surpass the width of screen or half of height, or whether the location-based service terminal having rolled former map viewing area away from).When surpassing, server can send electronic map data to this location-based service terminal once more.Whether server can also be prejudged the electronic map data that needs to send and send before before sending once more, if the electronic map data that did not only send then.
In other embodiment of the present invention, in step 820, server only issues electronic map data according to this map download request after receiving the map download request.Whether the displacement when can judge that oneself moves forward according to guidance path this moment by the location-based service terminal surpasses predetermined threshold value and (for example whether surpasses the width of screen or half of height, or whether the location-based service terminal has rolled former map viewing area away from), and when surpassing, send the map download request to server.The location-based service terminal is before sending the map download request, also can judge request map area data part buffer memory whether wherein, if then revise the request map area, thereby only download electronic map data and the guidance path data that do not have buffer memory to server requests.
Though more than described specific embodiments more of the present invention and feature, this only is an illustrative purposes for example, and is not used in restriction the present invention.In other embodiments of the invention, can also comprise combination in any, distortion, the alternative and expansion of above-mentioned any embodiment and feature.
In a word, a kind of dynamic map method for down loading of the present invention, server and location-based service terminal are carried out electronic chart according to guidance path and are downloaded, only download current map area data that show and the place ahead map area data that move forward according to guidance path of needing, need not store in large quantities diagram data thereby not need bigger memory space, reduced requirement, provided cost savings position service terminal related hardware.Simultaneously, owing to download the place ahead map area data in advance and, can reduce dependence, reduce network traffics, cost saving to network rate with its buffer memory.
Relate to various functional modules in the description above, these functional modules can comprise hardware, software and/or its combination usually.Therefore, the specific hardware in the scope of the present invention various functional modules that are not subjected to clearly to mention among the embodiment and/or the restriction of software feature.As non-limitative example, the present invention in an embodiment can be by one or more processors (for example microprocessor, digital signal processor, baseband processor, microcontroller etc.) executive software instruction (for example being stored in volatile memory and/or permanent memory).Give an example, the present invention can also use application-specific integrated circuit (ASIC) (ASIC) and/or other hardware element to realize again.
Though the present invention describes by specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.In addition, at particular condition or material, can make various modifications to the present invention, and not depart from the scope of the present invention.Therefore, the present invention is not limited to disclosed specific embodiment, and should comprise the whole execution modes that fall in the claim scope of the present invention.
Claims (9)
1. a dynamic map method for down loading is characterized in that, comprising:
Upload current location information to server, and by with described server interaction, determine a bar navigation path;
Receive described server according to the described current location information that receives and determine that the electronic map data that the guidance path that obtains sends, described electronic map data comprise the map area data of current needs demonstration and according to the map area data in described guidance path travel direction the place ahead;
Show map area data and the remaining electronic map data of buffer memory that described current needs show;
When moving forward, show the electronic map data of described buffer memory according to described guidance path.
2. dynamic map method for down loading according to claim 1 is characterized in that, described dynamic map method for down loading also comprises:
Receive described server according to the current location information that receives and the guidance path of determining to obtain issue induce data;
And according to the described data prompting of being correlated with, described voice, image and/or the Word message of inducing data to comprise the relevant position of inducing.
3. a location-based service terminal is characterized in that, comprising:
The terminal interaction module is used for server interaction and according to the described mutual bar navigation path of determining;
The terminal transceiver module, be used for uploading current location information to described server, also be used to receive described server according to the described current location information that receives and the electronic map data that sends of the guidance path of determining to obtain, described electronic map data comprises the map area data of current needs demonstration and according to the map area data in described guidance path travel direction the place ahead;
Display module is used to the map area data that show that described current needs show;
Cache module is used for the remaining electronic map data of buffer memory, and when moving forward according to described guidance path the electronic map data of described buffer memory is sent to described display module and shows.
4. location-based service terminal according to claim 3, it is characterized in that, described location-based service terminal also comprises induces reminding module, be used for inducing the data prompting of being correlated with according to what described terminal transceiver module received, described voice, image and/or Word message of inducing data to comprise the relevant position, and the described data of inducing are that described server is according to the current location information that receives and determine that the guidance path that obtains issues.
5. a dynamic map method for down loading is characterized in that, comprising:
Receive current location information from the location-based service terminal, and by with described location-based service terminal interaction, determine a bar navigation path;
According to the described current location information that receives and determine the guidance path that the obtains sub-map datum that under described location-based service terminal, conducts electricity, described electronic map data comprises map area data that the current needs of location-based service terminal show and the described location-based service terminal map area data according to described guidance path travel direction the place ahead, the described current map area data that need to show are shown that by described location-based service terminal remaining electronic map data is carried out demonstration by described location-based service terminal buffers and when described location-based service terminal moves forward according to described guidance path.
6. dynamic map method for down loading according to claim 5, it is characterized in that, described dynamic map method for down loading also comprises: judge whether the displacement when described location-based service terminal moves forward according to described guidance path surpasses predetermined threshold value, if, then send electronic map data to described location-based service terminal once more, the electronic map data of Fa Songing does not comprise the electronic map data that has sent once more.
7. dynamic map method for down loading according to claim 5 is characterized in that, described dynamic map method for down loading also comprises:
According to the described current location information that receives and determine that the guidance path that obtains issues to described location-based service terminal and induce data, so that described location-based service terminal is according to the described data prompting of being correlated with, described voice, image and/or the Word message of inducing data to comprise the relevant position of inducing.
8. a server is characterized in that, comprising:
The server interaction module is used for the location-based service terminal interaction and according to the described mutual bar navigation path of determining;
The server transceiver module, be used for receiving current location information from described location-based service terminal, the guidance path that also is used for according to the described current location information that receives and determines the to obtain sub-map datum that under described location-based service terminal, conducts electricity, described electronic map data comprises map area data that the current needs of location-based service terminal show and the described location-based service terminal map area data according to described guidance path travel direction the place ahead, the described current map area data that need to show are shown that by described location-based service terminal remaining electronic map data is carried out demonstration by described location-based service terminal buffers and when described location-based service terminal moves forward according to described guidance path.
9. server according to claim 8, it is characterized in that, described server also comprises the transmission judge module, described transmission judge module is used for: judge whether the displacement when described location-based service terminal moves forward according to described guidance path surpasses predetermined threshold value, if, then notify described server transceiver module to send electronic map data to described location-based service terminal once more, the electronic map data of Fa Songing does not comprise the electronic map data that has sent once more.
10.Server according to claim 8, it is characterized in that, described server also comprises induces data module, the described data module of inducing is used for: according to the described current location information that receives and determine that the guidance path that obtains generates and induce data, and issue the described data of inducing to described location-based service terminal by described server transceiver module, so that described location-based service terminal is according to the described data prompting of being correlated with, described voice, image and/or the Word message of inducing data to comprise the relevant position of inducing.
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Application publication date: 20111005 |