CN102446203A - Method and device for obtaining map - Google Patents
Method and device for obtaining map Download PDFInfo
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- CN102446203A CN102446203A CN201010510737XA CN201010510737A CN102446203A CN 102446203 A CN102446203 A CN 102446203A CN 201010510737X A CN201010510737X A CN 201010510737XA CN 201010510737 A CN201010510737 A CN 201010510737A CN 102446203 A CN102446203 A CN 102446203A
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Abstract
The invention relates to a method and a device for obtaining a map, wherein the method comprises the following steps of: when a user wants to display a part of map with a designated place as the center in a map having a designated scale on a terminal, determining a plurality of map pictures to be displayed on the screen of the terminal in the map having the designated scale according to the position coordinates of the designated place in the map having the designated scale and the size of the screen of the terminal; sending a message for determining the picture of the designated map among the plurality of map pictures to a map background server via the terminal; and when the terminal receives the picture of the designated map from the map background server, displaying a map formed by combining the plurality of map pictures on the terminal. With the method and the device, short time is needed to display the map on the terminal and unnecessary network traffics are reduced.
Description
Technical field
The present invention relates to be used to obtain the method and apparatus of map.
Background technology
Along with the arrival in mobile Internet epoch, cell phone map software comes into vogue gradually.A lot of cell phone map The software adopted connect the mode of internet, and at first the map with the exploitation of third party's electronic chart provider downloads on the mobile phone, on screen, represents the map of being downloaded then.
Yet, since the restriction of the network bandwidth, the mode that just shows after this map with view picture map or certain province and area is downloaded, and the user need wait for than the map that just can see handset displays after the long time.And the user possibly only want to browse the map around certain place interested, but cell phone map software will download view picture map or certain province get off with the map in area, and this will produce many unnecessary network traffic.
Summary of the invention
Consider the defective of prior art, embodiments of the invention provide a kind of method and apparatus that is used to obtain map, utilize this method and apparatus, only need the short period just can be on the terminal displayed map, and minimizing unnecessary network traffic.
According to a kind of method that is used to obtain map of the present invention; Comprise: when the user wants on the terminal to show in the map with designated ratio chi when being the segment map at center with the appointed place; According to position coordinates and the screen size at said terminal of said appointed place in having the said map of said designated ratio chi, confirm to have a plurality of map pictures that will on the screen at said terminal, show in the said map of said designated ratio chi; Send the message of the appointment map picture be used for obtaining said definite a plurality of map pictures to the map background server via said terminal; And, when said terminal when said map background server receives said appointment map picture, on said terminal, show the map that is combined to form by said a plurality of map pictures.
According to a kind of method that is used to obtain map of the present invention; Comprise: when the map background server receives the message of the given map picture that is used for obtaining the map with designated ratio chi from the terminal, send the request message of at least one map picture be used for obtaining said given map picture to map provider via said map background server; And, when said map background server when said map provider server receives said at least one map picture, send said given map picture via said map background server to said terminal.
According to a kind of device that is used to obtain map of the present invention; Comprise: determination module; Be used for when the user wants on the terminal, to show that the map with designated ratio chi is the segment map at center with the appointed place; According to position coordinates and the screen size at said terminal of said appointed place in having the said map of said designated ratio chi, confirm to have a plurality of map pictures that will on the screen at said terminal, show in the said map of said designated ratio chi; Sending module is used for sending to the map background server message of the appointment map picture be used to obtain said definite a plurality of map pictures via said terminal; And, display module, be used for when said terminal when said map background server receives said appointment map picture, on said terminal, show the map that is combined to form by said a plurality of map pictures.
According to a kind of device that is used to obtain map of the present invention; Comprise: first sending module; Be used for when the map background server receives the message of the given map picture that is used to obtain the map with designated ratio chi from the terminal, send the request message of at least one map picture be used for obtaining said given map picture via said map background server to map provider; And, second sending module, be used for when said map background server when said map provider server receives said at least one map picture, send said given map picture via said map background server to said terminal.
Description of drawings
Other characteristics of the present invention, characteristics and advantage will become more obvious through the detailed description below in conjunction with accompanying drawing.Wherein:
Fig. 1 is the configuration diagram of system that is used to obtain map that illustrates according to first embodiment of the invention; And
Fig. 2 A-2C is the process flow diagram of method that is used to obtain map that illustrates according to first embodiment of the invention.
Embodiment
Below, will combine accompanying drawing to describe each embodiment of the present invention in detail.
The map in country, province or an area generally includes a plurality of maps with different proportion chi.
According to some embodiments of the present invention; Be divided into a plurality of map pictures to each map with special ratios chi with identical pixels tall and pixel wide; And have at this and to specify a point in map of special ratios chi as reference point; Thereby have in the map of special ratios chi at this; The central point of each map picture of these a plurality of map pictures has definite position coordinates (for the ease of describing, below the central point of map picture being called the position coordinates of map picture in map with respect to the position coordinates of the reference point of map) with respect to this reference point.When the user wants on the screen at the terminal to show in the map with designated ratio chi with the appointed place is the segment map at center; The terminal is calculated in this map with designated ratio chi and will be had the position coordinates in the map of designated ratio chi at this at those map pictures that show on the screen at terminal; And has the engineer's scale of the map of designated ratio chi at the position coordinates that this has in the map of designated ratio chi with this according to those map pictures; Those map pictures of request show the map that is combined to form by those map pictures from server.
According to some embodiments of the present invention owing to only download the map picture that will on the screen at terminal, show, rather than download whole map, therefore only need the short period just can be on the terminal displayed map, and minimizing unnecessary network traffic.
Below, with the example of mobile phone, the first embodiment of the present invention is described as the terminal.It will be appreciated by those skilled in the art that the terminal also can be other equipment except mobile phone, for example PDA(Personal Digital Assistant) and game machine etc.
Fig. 1 is the configuration diagram of system that is used to obtain map that illustrates according to first embodiment of the invention.As shown in Figure 1, the system 10 that is used to obtain map comprises mobile phone 100, map background server 200 and map provider server 300.
Wherein, Mobile phone 100 is used for calculating the position coordinates of a plurality of each comfortable map of map picture that will on the screen of mobile phone 100, show;, map background server 200 also is not stored at least one map picture in the mobile phone 100 in sending a request message with these a plurality of map pictures of acquisition request; And after receiving this at least one map picture that map background server 200 sends, on the screen of mobile phone 100, show the map that is combined to form by these a plurality of map pictures.
Fig. 2 A-2C is the process flow diagram of method that is used to obtain map that illustrates according to first embodiment of the invention.Shown in Fig. 2 A-2C; When the user of mobile phone 100 wants on the screen of mobile phone 100, to show in the map with engineer's scale B when being the segment map at center with place D; Mobile phone 100 sends one to map background server 200 and is used for obtaining place D with respect to the request message (step S200) of the position coordinates of the reference point of the map with engineer's scale B; Wherein, the actual longitude and latitude that comprises engineer's scale B and place D in this request message.For the ease of describing, below the three unities is called the position coordinates of this place in map with respect to the position coordinates of the reference point in the map.
After receiving the request message that mobile phone 100 sends, map background server 200 finds out the encryption longitude and latitude (step S210) of the reference point of the map with engineer's scale B from each of storage in advance has the encryption longitude and latitude of reference point of map of different proportion chi.
Because the regulation of national geography information security, the electronic chart interface that map provider provides must be parameter to encrypt longitude and latitude all, so the actual longitude and latitude of place D need be scaled the encryption longitude and latitude earlier.
When receiving the request message that map background server 200 sends, map provider server 300 is encrypted through the actual longitude and latitude to the place D that request message comprised that received, and calculates the encryption longitude and latitude (step S224) of place D.Is known owing to actual longitude and latitude being encrypted the method for calculating the encryption longitude and latitude to those skilled in the art, therefore omits the description to this method at this.
The response message that map provider server 300 will comprise the encryption longitude and latitude of place D returns to map background server 200 (step S226).
After receiving the response message of this encryption longitude and latitude that comprises place D from map provider server 300, map background server 200 sends one to map provider server 300 and is used for obtaining the request message (step S228) of place D at the position coordinates of the map with engineer's scale B.Wherein, this request message comprise engineer's scale B, the encryption longitude and latitude of the reference point of the map searched and the encryption longitude and latitude of place D with engineer's scale B.
When receiving the request message that map background server 200 sends; Map provider server 300 is according to the encryption longitude and latitude of the reference point of the included map with engineer's scale B of the request message that is received and the encryption longitude and latitude of place D, calculates actual longitude and latitude and the actual longitude and latitude (step S230) of place D of the reference point of the map with engineer's scale B.
After receiving the response message that map provider server 300 sends, map background server 200 sends to mobile phone 100 (step S260) with the response message that is received.
After receiving the response message that map background server 200 sends; Mobile phone 100 is according to position coordinates and the pixels tall of map picture and the screen size of pixel wide and mobile phone 100 of the place D that comprises in the response message that is received in the map with engineer's scale B; Calculating is presented at place D under the situation of screen center's point of mobile phone 100; Have each leisure of a plurality of map pictures that will on the screen of mobile phone 100, show in the map of engineer's scale B and have the position coordinates in the map of engineer's scale B, thereby confirm to have a plurality of map pictures (step S280) that will on the screen of mobile phone 100, show in the map of engineer's scale B.
Particularly; Suppose the position coordinates of place D in map with engineer's scale B be (Dx, Dy), the pixels tall of map picture and pixel wide are respectively PH and PW; The pixels tall of the screen of mobile phone 100 and pixel wide are respectively SH and SW; Then place D drops in the map picture with engineer's scale B certainly, and the central point of this map picture is place C, and the position coordinates (be place C position coordinates with respect to reference point in map with engineer's scale B) of place C in the map with engineer's scale B is (Cx; Cy), it calculates according to following equality (1) and (2):
Cx=(Floor (Dx/PW)+Sign (Dx) * 0.5) * PW equality (1)
Cy=(Floor (Dy/PH)+Sign (Dy) * 0.5) * PH equality (2)
Wherein, Floor () is meant the function of round numbers, and Sign () is meant the function of getting symbol.
Because the pixels tall of every map picture and pixel wide all are to be fixed as PH and PW, therefore can calculate the number of the map picture that the screen of covering mobile phone 100 is required at most.Particularly, needed map picture number N can calculate according to following equality (3) and (4) on needed map picture number M on the horizontal direction of the screen of mobile phone 100 and the vertical direction at the screen of mobile phone 100:
M=Floor (SW/PW)+2 equality (3)
N=Floor (SH/PH)+2 equality (4)
So, the needed map picture number of whole screen of covering mobile phone 100 is M*N.
Then, calculating this M*N opens in the map picture all the other M*N-1 except the map picture at place D place and opens the position coordinates in the map that each leisure of map picture has engineer's scale B.Because place D will show in screen center, the map picture at place D place is near screen center's point so.These all the other M*N-1 open position coordinates in the map that each leisure of map picture has engineer's scale B can be at an easy rate the position coordinates (Cx of map picture in map through place D place with engineer's scale B; Cy) calculate, be nothing but differ in the horizontal direction 1 to M/2 doubly the map picture pixel wide and differ 1 to N/2 doubly map picture pixels tall in vertical direction.
Position coordinates in the engineer's scale B of the map at this a plurality of map pictures place of mobile phone 100 bases and the map that this each leisure of a plurality of map pictures has engineer's scale B; The map picture that retrieval mobile phone 100 was stored in the past is to confirm whether these a plurality of map pictures have been stored in (step S300) in the mobile phone 100.In mobile phone 100; When each map picture P of storage; Engineer's scale and the position coordinates associated storage of map picture P in map with map picture P and map picture P place map; Thereby when mobile phone 100 wants to check whether a specific map picture has been stored in the mobile phone 100; Mobile phone 100 utilizes the engineer's scale of the map at this specific map picture place to retrieve with the position coordinates of this specific map picture in map, just can know whether this specific map picture has been stored in the mobile phone 100.
If the result for retrieval of step S300 shows at least one the map picture ZS in these a plurality of map pictures and also be not stored in the mobile phone 100, then mobile phone 100 sends the message (step S310) of this at least one map picture ZS that is used for obtaining at the map with engineer's scale B to map background server 200.Wherein, this message comprises the engineer's scale B and the position coordinates of this at least one map picture ZS in the map with engineer's scale B of the map at this at least one map picture ZS place.
After receiving the message that mobile phone 100 sends; Map background server 200 is according to the engineer's scale B and the position coordinates of this at least one map picture ZS in the map with engineer's scale B of the map at this included at least one map picture ZS place of this message; The map picture of storage before the retrieving map background server 200 is to confirm whether this at least one map picture ZS has been stored in (step S320) in the map background server 200.Similarly; In map background server 200; When each map picture K of storage; Engineer's scale and the position coordinates associated storage of map picture K in map with map picture K and map picture K place map; Thereby when map background server 200 wanted to check whether a specific map picture has been stored in the map background server 200, map background server 200 utilized the engineer's scale of the map at this specific map picture place to retrieve with the position coordinates of this specific map picture in map, just can know whether this specific map picture has been stored in the map background server 200.
If the result for retrieval of step S320 shows this at least one map picture ZS and also be not stored in the map background server 200, then map background server 200 sends the message (step S330) of this at least one map picture ZS that is used for obtaining at the map with engineer's scale B to map provider server 300.Wherein, this message comprises encryption longitude and latitude, the position coordinates of this at least one map picture ZS in the map with engineer's scale B and the pixels tall and the pixel wide of map picture of reference point of engineer's scale B, this map with engineer's scale B of the map at this at least one map picture ZS place.
After receiving the message that map background server 200 sends; Map provider server 300 is according to the encryption longitude and latitude of the reference point of the position coordinates of included this at least one the map picture ZS of this message in the map with engineer's scale B, this map with engineer's scale B and the pixels tall and the pixel wide of map picture; From map, determine this at least one map picture ZS position coordinates in map with engineer's scale B and height and the width defined map picture of map picture included, and extract determined map picture as this at least one map picture ZS (step S340) according to this message with engineer's scale B.
After receiving the response message that map provider server 300 sends, map background server 200 sends to mobile phone 100 (step S360) with this response message.
If the result for retrieval of step S320 shows this at least one map picture ZS and has been stored in the map background server 200 that then map background server 200 extracts this at least one map picture ZS and sends response message (step S380) to mobile phone 100.Wherein, this response message comprises the engineer's scale B and the position coordinates of this at least one map picture ZS in the map with engineer's scale B of the map at this at least one map picture ZS, this at least one map picture ZS place.
After receiving the response message that map background server 200 sends; Mobile phone 100 has the position coordinates in the map of engineer's scale B according to being stored in other map picture in the mobile phone 100 in the included position coordinates of this at least one map picture ZS in the map with engineer's scale B of the response message of being received and these a plurality of map pictures; Be stored in other map picture in the mobile phone 100 in this at least one map picture ZS that the response message that combination is received comprises and these a plurality of map pictures, to form the map (step S390) that will on the screen of mobile phone 100, show.
Mobile phone 100 shows the map (step S400) that is combined to form on its screen.The method that shows the map that this is combined to form is very conspicuous.The central point of supposing mobile phone 100 screens is initial point O, and the screen coordinate of this initial point O is that (SOx, SOy), unit is a pixel.Because place D will be presented at the central point of mobile phone 100 screens, so on mobile phone 100 screens, the screen coordinate of the central point C of the map picture with engineer's scale B at place D place for (SCx, SCy), it is according to following calculation equation (5) and (6):
SCx=SOx+Cx-Dx equality (5)
SCy=Soy+Cy-Dy equality (6)
Behind the screen coordinate of the central point C that has confirmed the map picture that place D belongs to through equality (5) and (6), the display position of this map that is combined to form on mobile phone 100 screens just confirmed.
Mobile phone 100 is stored the map at this included at least one map picture ZS place of this included at least one map picture ZS of the response message that received and this response message explicitly in this locality engineer's scale B and this at least one map picture ZS has the position coordinates in the map of engineer's scale B, thus in mobile phone 100 this at least one map picture ZS (step S410) of storage.
If the result for retrieval of step S300 shows these a plurality of map pictures and all has been stored in the mobile phone 100 that then mobile phone 100 extracts this a plurality of map pictures (step S420).
Mobile phone 100 has the position coordinates in the map of engineer's scale B according to this each leisure of a plurality of map pictures, make up this a plurality of map pictures, the map (step S430) that will on the screen of mobile phone 100, show with formation.
Mobile phone 100 shows the map (step S440) that is combined to form on its screen.
When the user has moved the map that on the screen of mobile phone 100, shows, the place of central spot that is presented at the screen of mobile phone 100 will become another place D1 in the map with engineer's scale B from the place D the map with engineer's scale B.
In the horizontal direction with the pixel distance of vertical direction moving map and according to the place D of the central point of the screen that before user's moving map, is arranged in mobile phone 100 position coordinates at the map with engineer's scale B, the place D1 of central point that calculates the screen that after the user has moved map, is arranged in mobile phone 100 is at the position coordinates (step S450) of the map with engineer's scale B according to the user for mobile phone 100.Then; Flow process turns back to step S300; Calculating is to have under the situation of another place D1 in the map of engineer's scale B in the place of the central spot of the screen that is presented at mobile phone 100, will be presented at the position coordinates in the map that each leisure of a plurality of map pictures on the screen of mobile phone 100 has engineer's scale B.
Other distortion
Though it will be appreciated by those skilled in the art that among the embodiment that describes in the above, mobile phone 100 map picture that 200 storages are received with the map background server, the present invention is not limited thereto.In some other embodiment of the present invention, mobile phone 100 also can not stored the map picture of being received with map background server 200.
Though it will be appreciated by those skilled in the art that in step S330, the message that map background server 200 sends to map provider server 300 includes the pixels tall and the pixel wide of map picture, yet the present invention is not limited thereto.In some other embodiment of the present invention; If map provider server 300 has been known the pixels tall and the pixel wide of map picture, then map background server 200 need not be to the pixels tall and the pixel wide of map provider server 300 transmission map pictures.
Those skilled in the art are to be understood that; Map background server 200 sends the request message of the encryption longitude and latitude that obtains the place to Map Services provider server 300, is that to follow the message that map provider server received must be the regulation of parameter to encrypt longitude and latitude.If the message that Map Services provider server is accepted can be supported actual longitude and latitude; Then map background server 200 need not to send this request message to Map Services provider server; And the parameter of the request that Map Services provider server 300 is received is a parameter with actual longitude and latitude all.
It will be appreciated by those skilled in the art that the mode that mobile phone 100, map background server 200 and map provider server 300 performed separately steps can utilize software mode, hardware mode or software and hardware to combine realizes.
It will be appreciated by those skilled in the art that top disclosed each embodiment can make various changes and distortion not departing under the situation of inventing essence, these distortion and changing all should fall within protection scope of the present invention.Therefore, protection scope of the present invention should be defined by appending claims.
Claims (19)
1. method that is used to obtain map comprises:
When the user wants on the terminal to show in the map with designated ratio chi when being the segment map at center with the appointed place; According to position coordinates and the screen size at said terminal of said appointed place in having the said map of said designated ratio chi, confirm to have a plurality of map pictures that will on the screen at said terminal, show in the said map of said designated ratio chi;
Send the message of the appointment map picture be used for obtaining said definite a plurality of map pictures to the map background server via said terminal; And
When said terminal when said map background server receives said appointment map picture, on said terminal, show the map that is combined to form by said a plurality of map pictures.
2. the method for claim 1, wherein said appointed place is the place that after said user moves the map that on said terminal, shows, is presented at the screen center at said terminal, and said method also comprises step:
Move the distance that position coordinates and said user in the said map that the place that is presented at the screen center at said terminal before the map that shows on the said terminal has said designated ratio chi move the map that shows on the said terminal according to said user, calculate the position coordinates of said appointed place in having the said map of said designated ratio chi.
3. the method for claim 1, wherein also comprise step:
Be used for obtaining the request message of said appointed place at the position coordinates of the said map with said designated ratio chi via said terminal to said map background server transmission, wherein, described request message comprises the encryption longitude and latitude of said appointed place; And
Receive the position coordinates of said appointed place during having the said map of said designated ratio chi via said terminal from said map background server.
4. the method for claim 1, wherein said appointment map picture is the map picture that the terminal does not have storage described in said a plurality of map picture or the said a plurality of map pictures.
5. the method for claim 1, wherein also comprise:
To be stored in the said terminal from the said appointment map picture that said map background server receives.
6. method that is used to obtain map comprises:
When the map background server receives the message of the given map picture that is used for obtaining the map with designated ratio chi from the terminal, send the request message of at least one map picture be used for obtaining said given map picture to map provider via said map background server; And
When said map background server when said map provider server receives said at least one map picture, send said given map picture via said map background server to said terminal.
7. method as claimed in claim 6, wherein, said at least one map picture is those map pictures of not storing in the map background server described in said given map picture or the said given map picture.
8. method as claimed in claim 6 wherein, also comprises:
To be stored in the said map background server from said at least one map picture that said map provider server receives.
9. method as claimed in claim 6 wherein, also comprises step:
When said map background server is received from said terminal when being used for obtaining the request message of appointed place at the position coordinates of the said map with said designated ratio chi; Send to said map provider server via said map background server and to be used for obtaining the message of said appointed place at the position coordinates of said map with said designated ratio chi; Wherein, the encryption longitude and latitude of the reference point in described request message encryption longitude and latitude that comprises said appointed place and the said map with said designated ratio chi; And
When said map background server receives that from said map provider server said appointed place has the position coordinates the said map of said designated ratio chi, the position coordinates of the said appointed place of being received in having the said map of said designated ratio chi sent to said terminal via said map background server.
10. device that is used to obtain map comprises:
Determination module; Be used for when the user wants on the terminal, to show that the map with designated ratio chi is the segment map at center with the appointed place; According to position coordinates and the screen size at said terminal of said appointed place in having the said map of said designated ratio chi, confirm to have a plurality of map pictures that will on the screen at said terminal, show in the said map of said designated ratio chi;
Sending module is used for sending to the map background server message of the appointment map picture be used to obtain said definite a plurality of map pictures via said terminal; And
Display module, be used for when said terminal when said map background server receives said appointment map picture, on said terminal, show the map that is combined to form by said a plurality of map pictures.
11. device as claimed in claim 10, wherein, said appointed place is the place that after said user moves the map that on said terminal, shows, is presented at the screen center at said terminal, and said device also comprises:
Computing module; Be used for moving the position coordinates of the said map that the place that is presented at the screen center at said terminal before the map that shows on the said terminal has said designated ratio chi and the distance that said user moves the map that shows on the said terminal, calculate the position coordinates of said appointed place in having the said map of said designated ratio chi according to said user.
12. device as claimed in claim 10, wherein,
Said sending module also is used for being used to obtain the request message of said appointed place at the position coordinates of the said map with said designated ratio chi via said terminal to said map background server transmission; Wherein, Described request message comprises the actual longitude and latitude of said appointed place, and
Said device also comprises receiver module, is used for receiving the position coordinates of said appointed place at the said map with said designated ratio chi via said terminal from said map background server.
13. device as claimed in claim 10, wherein, said appointment map picture is the map picture that the terminal does not have storage described in said a plurality of map picture or the said a plurality of map pictures.
14. device as claimed in claim 10 wherein, also comprises:
Memory module is used for the said appointment map picture that receives from said map background server is stored in said terminal.
15. a device that is used to obtain map comprises:
First sending module; Be used for when the map background server receives the message of the given map picture that is used to obtain the map with designated ratio chi from the terminal, send the request message of at least one map picture be used for obtaining said given map picture via said map background server to map provider; And
Second sending module, be used for when said map background server when said map provider server receives said at least one map picture, send said given map picture via said map background server to said terminal.
16. device as claimed in claim 15, wherein, said at least one map picture is those map pictures of not storing in the map background server described in said given map picture or the said given map picture.
17. device as claimed in claim 15 wherein, also comprises:
Memory module is used for said at least one map picture that receives from said map provider server is stored in said map background server.
18. device as claimed in claim 15 wherein, also comprises:
The 3rd sending module; Be used for receiving from said terminal when being used to obtain the request message of appointed place at the position coordinates of said map with said designated ratio chi when said map background server; Send to said map provider server via said map background server and to be used for obtaining the message of said appointed place at the position coordinates of said map with said designated ratio chi; Wherein, Described request message comprises the encryption longitude and latitude of said appointed place, and the encryption longitude and latitude of the reference point in said message encryption longitude and latitude that comprises said appointed place and the said map with said designated ratio chi; And
The 4th sending module; Be used for when said map background server is received the position coordinates of said appointed place at the said map with said designated ratio chi from said map provider server, the position coordinates of the said appointed place of being received in having the said map of said designated ratio chi being sent to said terminal via said map background server.
19. a machine readable media is used for stores executable instructions, wherein, when said executable instruction is performed, makes the machine enforcement of rights require the step in any one claim of 1-9.
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|---|---|---|---|
| CN201010510737XA CN102446203A (en) | 2010-10-13 | 2010-10-13 | Method and device for obtaining map |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010510737XA CN102446203A (en) | 2010-10-13 | 2010-10-13 | Method and device for obtaining map |
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| CN102446203A true CN102446203A (en) | 2012-05-09 |
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| CN111857626A (en) * | 2020-07-16 | 2020-10-30 | 北京奇虎科技有限公司 | Picture display method, device and equipment based on screen coordinates and storage medium |
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